diff --git a/integration/angular/simple-message.ts b/integration/angular/simple-message.ts
index 024daeecf..e01ebf4b9 100644
--- a/integration/angular/simple-message.ts
+++ b/integration/angular/simple-message.ts
@@ -20,7 +20,7 @@ export const SimpleMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleMessage();
     while (reader.pos < end) {
diff --git a/integration/async-iterable-services-abort-signal/simple.ts b/integration/async-iterable-services-abort-signal/simple.ts
index c35d34e4a..4745e416c 100644
--- a/integration/async-iterable-services-abort-signal/simple.ts
+++ b/integration/async-iterable-services-abort-signal/simple.ts
@@ -21,7 +21,7 @@ export const EchoMsg = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EchoMsg {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEchoMsg();
     while (reader.pos < end) {
@@ -117,7 +117,7 @@ export class EchoerClientImpl implements Echoer {
   Echo(request: EchoMsg, abortSignal?: AbortSignal): Promise<EchoMsg> {
     const data = EchoMsg.encode(request).finish();
     const promise = this.rpc.request(this.service, "Echo", data, abortSignal || undefined);
-    return promise.then((data) => EchoMsg.decode(new _m0.Reader(data)));
+    return promise.then((data) => EchoMsg.decode(_m0.Reader.create(data)));
   }
 
   EchoServerStream(request: EchoMsg, abortSignal?: AbortSignal): AsyncIterable<EchoMsg> {
@@ -129,7 +129,7 @@ export class EchoerClientImpl implements Echoer {
   EchoClientStream(request: AsyncIterable<EchoMsg>, abortSignal?: AbortSignal): Promise<EchoMsg> {
     const data = EchoMsg.encodeTransform(request);
     const promise = this.rpc.clientStreamingRequest(this.service, "EchoClientStream", data, abortSignal || undefined);
-    return promise.then((data) => EchoMsg.decode(new _m0.Reader(data)));
+    return promise.then((data) => EchoMsg.decode(_m0.Reader.create(data)));
   }
 
   EchoBidiStream(request: AsyncIterable<EchoMsg>, abortSignal?: AbortSignal): AsyncIterable<EchoMsg> {
diff --git a/integration/async-iterable-services/simple.ts b/integration/async-iterable-services/simple.ts
index f5db589ab..79f54cdb7 100644
--- a/integration/async-iterable-services/simple.ts
+++ b/integration/async-iterable-services/simple.ts
@@ -21,7 +21,7 @@ export const EchoMsg = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EchoMsg {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEchoMsg();
     while (reader.pos < end) {
@@ -117,7 +117,7 @@ export class EchoerClientImpl implements Echoer {
   Echo(request: EchoMsg): Promise<EchoMsg> {
     const data = EchoMsg.encode(request).finish();
     const promise = this.rpc.request(this.service, "Echo", data);
-    return promise.then((data) => EchoMsg.decode(new _m0.Reader(data)));
+    return promise.then((data) => EchoMsg.decode(_m0.Reader.create(data)));
   }
 
   EchoServerStream(request: EchoMsg): AsyncIterable<EchoMsg> {
@@ -129,7 +129,7 @@ export class EchoerClientImpl implements Echoer {
   EchoClientStream(request: AsyncIterable<EchoMsg>): Promise<EchoMsg> {
     const data = EchoMsg.encodeTransform(request);
     const promise = this.rpc.clientStreamingRequest(this.service, "EchoClientStream", data);
-    return promise.then((data) => EchoMsg.decode(new _m0.Reader(data)));
+    return promise.then((data) => EchoMsg.decode(_m0.Reader.create(data)));
   }
 
   EchoBidiStream(request: AsyncIterable<EchoMsg>): AsyncIterable<EchoMsg> {
diff --git a/integration/avoid-import-conflicts/simple.ts b/integration/avoid-import-conflicts/simple.ts
index 918901a61..4880fecf1 100644
--- a/integration/avoid-import-conflicts/simple.ts
+++ b/integration/avoid-import-conflicts/simple.ts
@@ -85,7 +85,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -150,7 +150,7 @@ export const SimpleEnums = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleEnums {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleEnums();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const FooServiceCreateRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FooServiceCreateRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFooServiceCreateRequest();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const FooServiceCreateResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FooServiceCreateResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFooServiceCreateResponse();
     while (reader.pos < end) {
@@ -313,7 +313,7 @@ export class FooServiceClientImpl implements FooService {
   Create(request: FooServiceCreateRequest): Promise<FooServiceCreateResponse> {
     const data = FooServiceCreateRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "Create", data);
-    return promise.then((data) => FooServiceCreateResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => FooServiceCreateResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/avoid-import-conflicts/simple2.ts b/integration/avoid-import-conflicts/simple2.ts
index 94687d656..65983968d 100644
--- a/integration/avoid-import-conflicts/simple2.ts
+++ b/integration/avoid-import-conflicts/simple2.ts
@@ -102,7 +102,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
diff --git a/integration/barrel-imports/bar.ts b/integration/barrel-imports/bar.ts
index 40c84284a..00784f5c3 100644
--- a/integration/barrel-imports/bar.ts
+++ b/integration/barrel-imports/bar.ts
@@ -22,7 +22,7 @@ export const Bar = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Bar {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBar();
     while (reader.pos < end) {
diff --git a/integration/barrel-imports/foo.ts b/integration/barrel-imports/foo.ts
index 28a4f4b7a..948fca9c0 100644
--- a/integration/barrel-imports/foo.ts
+++ b/integration/barrel-imports/foo.ts
@@ -23,7 +23,7 @@ export const Foo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Foo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFoo();
     while (reader.pos < end) {
diff --git a/integration/batching-with-context/batching.ts b/integration/batching-with-context/batching.ts
index 2207cdc4c..370b5e83a 100644
--- a/integration/batching-with-context/batching.ts
+++ b/integration/batching-with-context/batching.ts
@@ -59,7 +59,7 @@ export const BatchQueryRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchQueryRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchQueryRequest();
     while (reader.pos < end) {
@@ -114,7 +114,7 @@ export const BatchQueryResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchQueryResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchQueryResponse();
     while (reader.pos < end) {
@@ -169,7 +169,7 @@ export const BatchMapQueryRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryRequest();
     while (reader.pos < end) {
@@ -224,7 +224,7 @@ export const BatchMapQueryResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryResponse();
     while (reader.pos < end) {
@@ -298,7 +298,7 @@ export const BatchMapQueryResponse_EntitiesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryResponse_EntitiesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryResponse_EntitiesEntry();
     while (reader.pos < end) {
@@ -363,7 +363,7 @@ export const GetOnlyMethodRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GetOnlyMethodRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGetOnlyMethodRequest();
     while (reader.pos < end) {
@@ -414,7 +414,7 @@ export const GetOnlyMethodResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GetOnlyMethodResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGetOnlyMethodResponse();
     while (reader.pos < end) {
@@ -467,7 +467,7 @@ export const WriteMethodRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WriteMethodRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWriteMethodRequest();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const WriteMethodResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WriteMethodResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWriteMethodResponse();
     while (reader.pos < end) {
@@ -564,7 +564,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -642,7 +642,7 @@ export class EntityServiceClientImpl<Context extends DataLoaders> implements Ent
   BatchQuery(ctx: Context, request: BatchQueryRequest): Promise<BatchQueryResponse> {
     const data = BatchQueryRequest.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "BatchQuery", data);
-    return promise.then((data) => BatchQueryResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => BatchQueryResponse.decode(_m0.Reader.create(data)));
   }
 
   GetMapQuery(ctx: Context, id: string): Promise<Entity> {
@@ -660,7 +660,7 @@ export class EntityServiceClientImpl<Context extends DataLoaders> implements Ent
   BatchMapQuery(ctx: Context, request: BatchMapQueryRequest): Promise<BatchMapQueryResponse> {
     const data = BatchMapQueryRequest.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "BatchMapQuery", data);
-    return promise.then((data) => BatchMapQueryResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => BatchMapQueryResponse.decode(_m0.Reader.create(data)));
   }
 
   GetOnlyMethod(ctx: Context, request: GetOnlyMethodRequest): Promise<GetOnlyMethodResponse> {
@@ -669,7 +669,7 @@ export class EntityServiceClientImpl<Context extends DataLoaders> implements Ent
         const responses = requests.map(async (request) => {
           const data = GetOnlyMethodRequest.encode(request).finish();
           const response = await this.rpc.request(ctx, "batching.EntityService", "GetOnlyMethod", data);
-          return GetOnlyMethodResponse.decode(new _m0.Reader(response));
+          return GetOnlyMethodResponse.decode(_m0.Reader.create(response));
         });
         return Promise.all(responses);
       }, { cacheKeyFn: hash, ...ctx.rpcDataLoaderOptions });
@@ -680,7 +680,7 @@ export class EntityServiceClientImpl<Context extends DataLoaders> implements Ent
   WriteMethod(ctx: Context, request: WriteMethodRequest): Promise<WriteMethodResponse> {
     const data = WriteMethodRequest.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "WriteMethod", data);
-    return promise.then((data) => WriteMethodResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => WriteMethodResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/batching/batching.ts b/integration/batching/batching.ts
index a9ba79131..72b8a8666 100644
--- a/integration/batching/batching.ts
+++ b/integration/batching/batching.ts
@@ -57,7 +57,7 @@ export const BatchQueryRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchQueryRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchQueryRequest();
     while (reader.pos < end) {
@@ -112,7 +112,7 @@ export const BatchQueryResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchQueryResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchQueryResponse();
     while (reader.pos < end) {
@@ -167,7 +167,7 @@ export const BatchMapQueryRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryRequest();
     while (reader.pos < end) {
@@ -222,7 +222,7 @@ export const BatchMapQueryResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryResponse();
     while (reader.pos < end) {
@@ -296,7 +296,7 @@ export const BatchMapQueryResponse_EntitiesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BatchMapQueryResponse_EntitiesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBatchMapQueryResponse_EntitiesEntry();
     while (reader.pos < end) {
@@ -361,7 +361,7 @@ export const GetOnlyMethodRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GetOnlyMethodRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGetOnlyMethodRequest();
     while (reader.pos < end) {
@@ -412,7 +412,7 @@ export const GetOnlyMethodResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GetOnlyMethodResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGetOnlyMethodResponse();
     while (reader.pos < end) {
@@ -465,7 +465,7 @@ export const WriteMethodRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WriteMethodRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWriteMethodRequest();
     while (reader.pos < end) {
@@ -513,7 +513,7 @@ export const WriteMethodResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WriteMethodResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWriteMethodResponse();
     while (reader.pos < end) {
@@ -562,7 +562,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -628,25 +628,25 @@ export class EntityServiceClientImpl implements EntityService {
   BatchQuery(request: BatchQueryRequest): Promise<BatchQueryResponse> {
     const data = BatchQueryRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "BatchQuery", data);
-    return promise.then((data) => BatchQueryResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => BatchQueryResponse.decode(_m0.Reader.create(data)));
   }
 
   BatchMapQuery(request: BatchMapQueryRequest): Promise<BatchMapQueryResponse> {
     const data = BatchMapQueryRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "BatchMapQuery", data);
-    return promise.then((data) => BatchMapQueryResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => BatchMapQueryResponse.decode(_m0.Reader.create(data)));
   }
 
   GetOnlyMethod(request: GetOnlyMethodRequest): Promise<GetOnlyMethodResponse> {
     const data = GetOnlyMethodRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "GetOnlyMethod", data);
-    return promise.then((data) => GetOnlyMethodResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => GetOnlyMethodResponse.decode(_m0.Reader.create(data)));
   }
 
   WriteMethod(request: WriteMethodRequest): Promise<WriteMethodResponse> {
     const data = WriteMethodRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "WriteMethod", data);
-    return promise.then((data) => WriteMethodResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => WriteMethodResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/bytes-node/google/protobuf/wrappers.ts b/integration/bytes-node/google/protobuf/wrappers.ts
index 680f4c8ad..9be8348b4 100644
--- a/integration/bytes-node/google/protobuf/wrappers.ts
+++ b/integration/bytes-node/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/bytes-node/point.ts b/integration/bytes-node/point.ts
index 8067627f4..b55193fb4 100644
--- a/integration/bytes-node/point.ts
+++ b/integration/bytes-node/point.ts
@@ -25,7 +25,7 @@ export const Point = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Point {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePoint();
     while (reader.pos < end) {
diff --git a/integration/const-enum/const-enum.ts b/integration/const-enum/const-enum.ts
index 189382dc2..b9adf74d4 100644
--- a/integration/const-enum/const-enum.ts
+++ b/integration/const-enum/const-enum.ts
@@ -90,7 +90,7 @@ export const DividerData = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DividerData {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDividerData();
     while (reader.pos < end) {
@@ -173,7 +173,7 @@ export const DividerData_TypeMapEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DividerData_TypeMapEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDividerData_TypeMapEntry();
     while (reader.pos < end) {
diff --git a/integration/enums-as-literals-with-string-enums/enums-as-literals-with-string-enums.ts b/integration/enums-as-literals-with-string-enums/enums-as-literals-with-string-enums.ts
index a76390bb5..fcaffae45 100644
--- a/integration/enums-as-literals-with-string-enums/enums-as-literals-with-string-enums.ts
+++ b/integration/enums-as-literals-with-string-enums/enums-as-literals-with-string-enums.ts
@@ -83,7 +83,7 @@ export const DividerData = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DividerData {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDividerData();
     while (reader.pos < end) {
diff --git a/integration/enums-as-literals/enums-as-literals.ts b/integration/enums-as-literals/enums-as-literals.ts
index d5b494284..9d696f037 100644
--- a/integration/enums-as-literals/enums-as-literals.ts
+++ b/integration/enums-as-literals/enums-as-literals.ts
@@ -61,7 +61,7 @@ export const DividerData = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DividerData {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDividerData();
     while (reader.pos < end) {
diff --git a/integration/fieldmask/fieldmask.ts b/integration/fieldmask/fieldmask.ts
index 7e61d0226..c55421a39 100644
--- a/integration/fieldmask/fieldmask.ts
+++ b/integration/fieldmask/fieldmask.ts
@@ -21,7 +21,7 @@ export const FieldMaskMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldMaskMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldMaskMessage();
     while (reader.pos < end) {
diff --git a/integration/fieldmask/google/protobuf/field_mask.ts b/integration/fieldmask/google/protobuf/field_mask.ts
index 37ec28306..18a47dbe6 100644
--- a/integration/fieldmask/google/protobuf/field_mask.ts
+++ b/integration/fieldmask/google/protobuf/field_mask.ts
@@ -221,7 +221,7 @@ export const FieldMask = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldMask {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldMask();
     while (reader.pos < end) {
diff --git a/integration/file-suffix/child.pb.ts b/integration/file-suffix/child.pb.ts
index 4cd5cf613..50e9d8e27 100644
--- a/integration/file-suffix/child.pb.ts
+++ b/integration/file-suffix/child.pb.ts
@@ -53,7 +53,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
diff --git a/integration/file-suffix/google/protobuf/timestamp.pb.ts b/integration/file-suffix/google/protobuf/timestamp.pb.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/file-suffix/google/protobuf/timestamp.pb.ts
+++ b/integration/file-suffix/google/protobuf/timestamp.pb.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/file-suffix/parent.pb.ts b/integration/file-suffix/parent.pb.ts
index 0bed45baf..3928b8014 100644
--- a/integration/file-suffix/parent.pb.ts
+++ b/integration/file-suffix/parent.pb.ts
@@ -30,7 +30,7 @@ export const Parent = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Parent {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseParent();
     while (reader.pos < end) {
diff --git a/integration/generic-metadata/hero.ts b/integration/generic-metadata/hero.ts
index d8fab5941..ababf5a34 100644
--- a/integration/generic-metadata/hero.ts
+++ b/integration/generic-metadata/hero.ts
@@ -37,7 +37,7 @@ export const HeroById = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): HeroById {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseHeroById();
     while (reader.pos < end) {
@@ -88,7 +88,7 @@ export const VillainById = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): VillainById {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseVillainById();
     while (reader.pos < end) {
@@ -142,7 +142,7 @@ export const Hero = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Hero {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseHero();
     while (reader.pos < end) {
@@ -201,7 +201,7 @@ export const Villain = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Villain {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseVillain();
     while (reader.pos < end) {
@@ -263,19 +263,19 @@ export class HeroServiceClientImpl implements HeroService {
   FindOneHero(request: HeroById): Promise<Hero> {
     const data = HeroById.encode(request).finish();
     const promise = this.rpc.request(this.service, "FindOneHero", data);
-    return promise.then((data) => Hero.decode(new _m0.Reader(data)));
+    return promise.then((data) => Hero.decode(_m0.Reader.create(data)));
   }
 
   FindOneVillain(request: VillainById): Promise<Villain> {
     const data = VillainById.encode(request).finish();
     const promise = this.rpc.request(this.service, "FindOneVillain", data);
-    return promise.then((data) => Villain.decode(new _m0.Reader(data)));
+    return promise.then((data) => Villain.decode(_m0.Reader.create(data)));
   }
 
   FindManyVillain(request: Observable<VillainById>): Observable<Villain> {
     const data = request.pipe(map((request) => VillainById.encode(request).finish()));
     const result = this.rpc.bidirectionalStreamingRequest(this.service, "FindManyVillain", data);
-    return result.pipe(map((data) => Villain.decode(new _m0.Reader(data))));
+    return result.pipe(map((data) => Villain.decode(_m0.Reader.create(data))));
   }
 }
 
diff --git a/integration/generic-service-definitions-and-services/simple.ts b/integration/generic-service-definitions-and-services/simple.ts
index de1c63b67..b426c3bcb 100644
--- a/integration/generic-service-definitions-and-services/simple.ts
+++ b/integration/generic-service-definitions-and-services/simple.ts
@@ -20,7 +20,7 @@ export const TestMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TestMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTestMessage();
     while (reader.pos < end) {
diff --git a/integration/generic-service-definitions/simple.ts b/integration/generic-service-definitions/simple.ts
index de1c63b67..b426c3bcb 100644
--- a/integration/generic-service-definitions/simple.ts
+++ b/integration/generic-service-definitions/simple.ts
@@ -20,7 +20,7 @@ export const TestMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TestMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTestMessage();
     while (reader.pos < end) {
diff --git a/integration/global-this/global-this.ts b/integration/global-this/global-this.ts
index f9b772596..ab0d8a7cf 100644
--- a/integration/global-this/global-this.ts
+++ b/integration/global-this/global-this.ts
@@ -24,7 +24,7 @@ export const Object = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Object {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseObject();
     while (reader.pos < end) {
@@ -75,7 +75,7 @@ export const Error = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Error {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseError();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-false/google/protobuf/timestamp.ts b/integration/grpc-js-use-date-false/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/grpc-js-use-date-false/google/protobuf/timestamp.ts
+++ b/integration/grpc-js-use-date-false/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts b/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
index f24a2251f..c2d6bd662 100644
--- a/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
+++ b/integration/grpc-js-use-date-false/grpc-js-use-date-false.ts
@@ -33,7 +33,7 @@ export const TimestampMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TimestampMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestampMessage();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-string/google/protobuf/timestamp.ts b/integration/grpc-js-use-date-string/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/grpc-js-use-date-string/google/protobuf/timestamp.ts
+++ b/integration/grpc-js-use-date-string/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts b/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
index 560183fd1..e5b29f41e 100644
--- a/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
+++ b/integration/grpc-js-use-date-string/grpc-js-use-date-string.ts
@@ -33,7 +33,7 @@ export const TimestampMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TimestampMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestampMessage();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-true/google/protobuf/timestamp.ts b/integration/grpc-js-use-date-true/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/grpc-js-use-date-true/google/protobuf/timestamp.ts
+++ b/integration/grpc-js-use-date-true/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts b/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
index 2f964a152..6f00a9ef3 100644
--- a/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
+++ b/integration/grpc-js-use-date-true/grpc-js-use-date-true.ts
@@ -33,7 +33,7 @@ export const TimestampMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TimestampMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestampMessage();
     while (reader.pos < end) {
diff --git a/integration/grpc-js/google/protobuf/empty.ts b/integration/grpc-js/google/protobuf/empty.ts
index aa4359b94..cbc07ea77 100644
--- a/integration/grpc-js/google/protobuf/empty.ts
+++ b/integration/grpc-js/google/protobuf/empty.ts
@@ -27,7 +27,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/grpc-js/google/protobuf/struct.ts b/integration/grpc-js/google/protobuf/struct.ts
index cc3f1bebd..7307c351c 100644
--- a/integration/grpc-js/google/protobuf/struct.ts
+++ b/integration/grpc-js/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/grpc-js/google/protobuf/timestamp.ts b/integration/grpc-js/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/grpc-js/google/protobuf/timestamp.ts
+++ b/integration/grpc-js/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/grpc-js/google/protobuf/wrappers.ts b/integration/grpc-js/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/grpc-js/google/protobuf/wrappers.ts
+++ b/integration/grpc-js/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/grpc-js/simple.ts b/integration/grpc-js/simple.ts
index 35586d3e4..2cd035d37 100644
--- a/integration/grpc-js/simple.ts
+++ b/integration/grpc-js/simple.ts
@@ -52,7 +52,7 @@ export const TestMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TestMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTestMessage();
     while (reader.pos < end) {
diff --git a/integration/grpc-web-go-server/example.ts b/integration/grpc-web-go-server/example.ts
index bececc87e..8d34325f8 100644
--- a/integration/grpc-web-go-server/example.ts
+++ b/integration/grpc-web-go-server/example.ts
@@ -109,7 +109,7 @@ export const DashFlash = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashFlash {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashFlash();
     while (reader.pos < end) {
@@ -174,7 +174,7 @@ export const DashUserSettingsState = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState();
     while (reader.pos < end) {
@@ -249,7 +249,7 @@ export const DashUserSettingsState_URLs = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState_URLs {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState_URLs();
     while (reader.pos < end) {
@@ -317,7 +317,7 @@ export const DashCred = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashCred {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashCred();
     while (reader.pos < end) {
@@ -391,7 +391,7 @@ export const DashAPICredsCreateReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsCreateReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsCreateReq();
     while (reader.pos < end) {
@@ -459,7 +459,7 @@ export const DashAPICredsUpdateReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsUpdateReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsUpdateReq();
     while (reader.pos < end) {
@@ -533,7 +533,7 @@ export const DashAPICredsDeleteReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsDeleteReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsDeleteReq();
     while (reader.pos < end) {
@@ -589,7 +589,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
@@ -639,13 +639,13 @@ export class DashStateClientImpl implements DashState {
   UserSettings(request: Empty): Promise<DashUserSettingsState> {
     const data = Empty.encode(request).finish();
     const promise = this.rpc.request(this.service, "UserSettings", data);
-    return promise.then((data) => DashUserSettingsState.decode(new _m0.Reader(data)));
+    return promise.then((data) => DashUserSettingsState.decode(_m0.Reader.create(data)));
   }
 
   ActiveUserSettingsStream(request: Empty): Observable<DashUserSettingsState> {
     const data = Empty.encode(request).finish();
     const result = this.rpc.serverStreamingRequest(this.service, "ActiveUserSettingsStream", data);
-    return result.pipe(map((data) => DashUserSettingsState.decode(new _m0.Reader(data))));
+    return result.pipe(map((data) => DashUserSettingsState.decode(_m0.Reader.create(data))));
   }
 }
 
@@ -673,19 +673,19 @@ export class DashAPICredsClientImpl implements DashAPICreds {
   Create(request: DashAPICredsCreateReq): Promise<DashCred> {
     const data = DashAPICredsCreateReq.encode(request).finish();
     const promise = this.rpc.request(this.service, "Create", data);
-    return promise.then((data) => DashCred.decode(new _m0.Reader(data)));
+    return promise.then((data) => DashCred.decode(_m0.Reader.create(data)));
   }
 
   Update(request: DashAPICredsUpdateReq): Promise<DashCred> {
     const data = DashAPICredsUpdateReq.encode(request).finish();
     const promise = this.rpc.request(this.service, "Update", data);
-    return promise.then((data) => DashCred.decode(new _m0.Reader(data)));
+    return promise.then((data) => DashCred.decode(_m0.Reader.create(data)));
   }
 
   Delete(request: DashAPICredsDeleteReq): Promise<DashCred> {
     const data = DashAPICredsDeleteReq.encode(request).finish();
     const promise = this.rpc.request(this.service, "Delete", data);
-    return promise.then((data) => DashCred.decode(new _m0.Reader(data)));
+    return promise.then((data) => DashCred.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/grpc-web-no-streaming-observable/example.ts b/integration/grpc-web-no-streaming-observable/example.ts
index e0e704337..8fa0510a4 100644
--- a/integration/grpc-web-no-streaming-observable/example.ts
+++ b/integration/grpc-web-no-streaming-observable/example.ts
@@ -87,7 +87,7 @@ export const DashFlash = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashFlash {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashFlash();
     while (reader.pos < end) {
@@ -152,7 +152,7 @@ export const DashUserSettingsState = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState();
     while (reader.pos < end) {
@@ -227,7 +227,7 @@ export const DashUserSettingsState_URLs = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState_URLs {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState_URLs();
     while (reader.pos < end) {
@@ -283,7 +283,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/grpc-web-no-streaming/example.ts b/integration/grpc-web-no-streaming/example.ts
index 5ce0f62e0..18e22f050 100644
--- a/integration/grpc-web-no-streaming/example.ts
+++ b/integration/grpc-web-no-streaming/example.ts
@@ -85,7 +85,7 @@ export const DashFlash = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashFlash {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashFlash();
     while (reader.pos < end) {
@@ -150,7 +150,7 @@ export const DashUserSettingsState = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState();
     while (reader.pos < end) {
@@ -225,7 +225,7 @@ export const DashUserSettingsState_URLs = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState_URLs {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState_URLs();
     while (reader.pos < end) {
@@ -281,7 +281,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/grpc-web/example.ts b/integration/grpc-web/example.ts
index 1e7b9fb4b..8e2314ff7 100644
--- a/integration/grpc-web/example.ts
+++ b/integration/grpc-web/example.ts
@@ -111,7 +111,7 @@ export const DashFlash = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashFlash {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashFlash();
     while (reader.pos < end) {
@@ -176,7 +176,7 @@ export const DashUserSettingsState = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState();
     while (reader.pos < end) {
@@ -251,7 +251,7 @@ export const DashUserSettingsState_URLs = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashUserSettingsState_URLs {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashUserSettingsState_URLs();
     while (reader.pos < end) {
@@ -319,7 +319,7 @@ export const DashCred = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashCred {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashCred();
     while (reader.pos < end) {
@@ -393,7 +393,7 @@ export const DashAPICredsCreateReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsCreateReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsCreateReq();
     while (reader.pos < end) {
@@ -461,7 +461,7 @@ export const DashAPICredsUpdateReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsUpdateReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsUpdateReq();
     while (reader.pos < end) {
@@ -535,7 +535,7 @@ export const DashAPICredsDeleteReq = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DashAPICredsDeleteReq {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDashAPICredsDeleteReq();
     while (reader.pos < end) {
@@ -591,7 +591,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/import-mapping/google/protobuf/timestamp.ts b/integration/import-mapping/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/import-mapping/google/protobuf/timestamp.ts
+++ b/integration/import-mapping/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/import-mapping/mapping.ts b/integration/import-mapping/mapping.ts
index a184d1a2d..d7d226ed7 100644
--- a/integration/import-mapping/mapping.ts
+++ b/integration/import-mapping/mapping.ts
@@ -41,7 +41,7 @@ export const WithEmtpy = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WithEmtpy {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWithEmtpy();
     while (reader.pos < end) {
@@ -92,7 +92,7 @@ export const WithStruct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WithStruct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWithStruct();
     while (reader.pos < end) {
@@ -143,7 +143,7 @@ export const WithTimestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WithTimestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWithTimestamp();
     while (reader.pos < end) {
@@ -206,7 +206,7 @@ export const WithAll = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WithAll {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWithAll();
     while (reader.pos < end) {
diff --git a/integration/import-suffix/child.pb.ts b/integration/import-suffix/child.pb.ts
index 0fd2504cd..6a88f0693 100644
--- a/integration/import-suffix/child.pb.ts
+++ b/integration/import-suffix/child.pb.ts
@@ -53,7 +53,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
diff --git a/integration/import-suffix/google/protobuf/timestamp.pb.ts b/integration/import-suffix/google/protobuf/timestamp.pb.ts
index 98dd46616..c39b2f849 100644
--- a/integration/import-suffix/google/protobuf/timestamp.pb.ts
+++ b/integration/import-suffix/google/protobuf/timestamp.pb.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/import-suffix/parent.pb.ts b/integration/import-suffix/parent.pb.ts
index 56b399832..2e02381f6 100644
--- a/integration/import-suffix/parent.pb.ts
+++ b/integration/import-suffix/parent.pb.ts
@@ -30,7 +30,7 @@ export const Parent = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Parent {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseParent();
     while (reader.pos < end) {
diff --git a/integration/lower-case-svc-methods/math.ts b/integration/lower-case-svc-methods/math.ts
index 5a9ca04a5..7f7c45a44 100644
--- a/integration/lower-case-svc-methods/math.ts
+++ b/integration/lower-case-svc-methods/math.ts
@@ -34,7 +34,7 @@ export const NumPair = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): NumPair {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumPair();
     while (reader.pos < end) {
@@ -90,7 +90,7 @@ export const NumSingle = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): NumSingle {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumSingle();
     while (reader.pos < end) {
@@ -143,7 +143,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -212,13 +212,13 @@ export class MathServiceClientImpl<Context extends DataLoaders> implements MathS
   add(ctx: Context, request: NumPair): Promise<NumSingle> {
     const data = NumPair.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "Add", data);
-    return promise.then((data) => NumSingle.decode(new _m0.Reader(data)));
+    return promise.then((data) => NumSingle.decode(_m0.Reader.create(data)));
   }
 
   absoluteValue(ctx: Context, request: NumSingle): Promise<NumSingle> {
     const data = NumSingle.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "AbsoluteValue", data);
-    return promise.then((data) => NumSingle.decode(new _m0.Reader(data)));
+    return promise.then((data) => NumSingle.decode(_m0.Reader.create(data)));
   }
 
   getDouble(ctx: Context, nu: number): Promise<number> {
@@ -234,7 +234,7 @@ export class MathServiceClientImpl<Context extends DataLoaders> implements MathS
   batchDouble(ctx: Context, request: Numbers): Promise<Numbers> {
     const data = Numbers.encode(request).finish();
     const promise = this.rpc.request(ctx, this.service, "BatchDouble", data);
-    return promise.then((data) => Numbers.decode(new _m0.Reader(data)));
+    return promise.then((data) => Numbers.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/meta-typings/google/protobuf/timestamp.ts b/integration/meta-typings/google/protobuf/timestamp.ts
index 872fdb6f4..3656a7ec8 100644
--- a/integration/meta-typings/google/protobuf/timestamp.ts
+++ b/integration/meta-typings/google/protobuf/timestamp.ts
@@ -128,7 +128,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/meta-typings/google/protobuf/wrappers.ts b/integration/meta-typings/google/protobuf/wrappers.ts
index f57ca984b..1be33c67e 100644
--- a/integration/meta-typings/google/protobuf/wrappers.ts
+++ b/integration/meta-typings/google/protobuf/wrappers.ts
@@ -108,7 +108,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -139,7 +139,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -170,7 +170,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -201,7 +201,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -232,7 +232,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -263,7 +263,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -294,7 +294,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -325,7 +325,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -356,7 +356,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/meta-typings/google/type/date.ts b/integration/meta-typings/google/type/date.ts
index 72e7aceb5..01c6245fc 100644
--- a/integration/meta-typings/google/type/date.ts
+++ b/integration/meta-typings/google/type/date.ts
@@ -54,7 +54,7 @@ export const DateMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DateMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDateMessage();
     while (reader.pos < end) {
diff --git a/integration/meta-typings/import_dir/thing.ts b/integration/meta-typings/import_dir/thing.ts
index ec843ccd8..17df9050a 100644
--- a/integration/meta-typings/import_dir/thing.ts
+++ b/integration/meta-typings/import_dir/thing.ts
@@ -22,7 +22,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/meta-typings/simple.ts b/integration/meta-typings/simple.ts
index e8cdaef83..f6af40374 100644
--- a/integration/meta-typings/simple.ts
+++ b/integration/meta-typings/simple.ts
@@ -259,7 +259,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -343,7 +343,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
@@ -383,7 +383,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested();
     while (reader.pos < end) {
@@ -423,7 +423,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage();
     while (reader.pos < end) {
@@ -457,7 +457,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage_DeepMessage();
     while (reader.pos < end) {
@@ -491,7 +491,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneOfMessage();
     while (reader.pos < end) {
@@ -537,7 +537,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -580,7 +580,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -623,7 +623,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -684,7 +684,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -721,7 +721,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -758,7 +758,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -795,7 +795,7 @@ export const SimpleWithMap_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_MapOfTimestampsEntry();
     while (reader.pos < end) {
@@ -832,7 +832,7 @@ export const SimpleWithMap_MapOfBytesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfBytesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_MapOfBytesEntry();
     while (reader.pos < end) {
@@ -866,7 +866,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap();
     while (reader.pos < end) {
@@ -903,7 +903,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -937,7 +937,7 @@ export const SimpleWithMapOfEnums = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMapOfEnums();
     while (reader.pos < end) {
@@ -974,7 +974,7 @@ export const SimpleWithMapOfEnums_EnumsByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums_EnumsByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMapOfEnums_EnumsByIdEntry();
     while (reader.pos < end) {
@@ -1008,7 +1008,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingRequest();
     while (reader.pos < end) {
@@ -1039,7 +1039,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingResponse();
     while (reader.pos < end) {
@@ -1116,7 +1116,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -1206,7 +1206,7 @@ export const SimpleButOptional = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleButOptional {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleButOptional();
     while (reader.pos < end) {
@@ -1252,7 +1252,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
@@ -1282,7 +1282,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/nice-grpc/google/protobuf/empty.ts b/integration/nice-grpc/google/protobuf/empty.ts
index b71279438..a7bb8d3ba 100644
--- a/integration/nice-grpc/google/protobuf/empty.ts
+++ b/integration/nice-grpc/google/protobuf/empty.ts
@@ -27,7 +27,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/nice-grpc/google/protobuf/struct.ts b/integration/nice-grpc/google/protobuf/struct.ts
index 8a5a6a439..f6d1675cc 100644
--- a/integration/nice-grpc/google/protobuf/struct.ts
+++ b/integration/nice-grpc/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/nice-grpc/google/protobuf/timestamp.ts b/integration/nice-grpc/google/protobuf/timestamp.ts
index f0fa36cf5..14f5f6d88 100644
--- a/integration/nice-grpc/google/protobuf/timestamp.ts
+++ b/integration/nice-grpc/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/nice-grpc/google/protobuf/wrappers.ts b/integration/nice-grpc/google/protobuf/wrappers.ts
index 93d4981eb..72a40ff73 100644
--- a/integration/nice-grpc/google/protobuf/wrappers.ts
+++ b/integration/nice-grpc/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/nice-grpc/simple.ts b/integration/nice-grpc/simple.ts
index 73ff2028a..76dc9e7da 100644
--- a/integration/nice-grpc/simple.ts
+++ b/integration/nice-grpc/simple.ts
@@ -35,7 +35,7 @@ export const TestMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TestMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTestMessage();
     while (reader.pos < end) {
diff --git a/integration/no-proto-package/no-proto-package.ts b/integration/no-proto-package/no-proto-package.ts
index 753dcf0bb..1e2fef379 100644
--- a/integration/no-proto-package/no-proto-package.ts
+++ b/integration/no-proto-package/no-proto-package.ts
@@ -25,7 +25,7 @@ export const User = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): User {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUser();
     while (reader.pos < end) {
@@ -73,7 +73,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
@@ -121,7 +121,7 @@ export class UserStateClientImpl implements UserState {
   GetUsers(request: Empty): Observable<User> {
     const data = Empty.encode(request).finish();
     const result = this.rpc.serverStreamingRequest(this.service, "GetUsers", data);
-    return result.pipe(map((data) => User.decode(new _m0.Reader(data))));
+    return result.pipe(map((data) => User.decode(_m0.Reader.create(data))));
   }
 }
 
diff --git a/integration/omit-optionals/simple.ts b/integration/omit-optionals/simple.ts
index fb421eeac..79788934e 100644
--- a/integration/omit-optionals/simple.ts
+++ b/integration/omit-optionals/simple.ts
@@ -24,7 +24,7 @@ export const TestMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): TestMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTestMessage();
     while (reader.pos < end) {
diff --git a/integration/oneof-properties/oneof.ts b/integration/oneof-properties/oneof.ts
index 5e707c715..5278b408c 100644
--- a/integration/oneof-properties/oneof.ts
+++ b/integration/oneof-properties/oneof.ts
@@ -131,7 +131,7 @@ export const PleaseChoose = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PleaseChoose {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePleaseChoose();
     while (reader.pos < end) {
@@ -249,7 +249,7 @@ export const PleaseChoose_Submessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PleaseChoose_Submessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePleaseChoose_Submessage();
     while (reader.pos < end) {
diff --git a/integration/oneof-unions-snake/google/protobuf/struct.ts b/integration/oneof-unions-snake/google/protobuf/struct.ts
index 14a1efa4f..47b7e5a71 100644
--- a/integration/oneof-unions-snake/google/protobuf/struct.ts
+++ b/integration/oneof-unions-snake/google/protobuf/struct.ts
@@ -100,7 +100,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -197,7 +197,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -270,7 +270,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -432,7 +432,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/oneof-unions-snake/simple.ts b/integration/oneof-unions-snake/simple.ts
index 77b6760a9..49a4c7e58 100644
--- a/integration/oneof-unions-snake/simple.ts
+++ b/integration/oneof-unions-snake/simple.ts
@@ -26,7 +26,7 @@ export const SimpleStruct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleStruct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleStruct();
     while (reader.pos < end) {
diff --git a/integration/oneof-unions/google/protobuf/struct.ts b/integration/oneof-unions/google/protobuf/struct.ts
index e86599eee..50af5ea9a 100644
--- a/integration/oneof-unions/google/protobuf/struct.ts
+++ b/integration/oneof-unions/google/protobuf/struct.ts
@@ -100,7 +100,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -197,7 +197,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -270,7 +270,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -423,7 +423,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/oneof-unions/oneof.ts b/integration/oneof-unions/oneof.ts
index c48473ad7..45f63c815 100644
--- a/integration/oneof-unions/oneof.ts
+++ b/integration/oneof-unions/oneof.ts
@@ -124,7 +124,7 @@ export const PleaseChoose = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PleaseChoose {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePleaseChoose();
     while (reader.pos < end) {
@@ -296,7 +296,7 @@ export const PleaseChoose_Submessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PleaseChoose_Submessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePleaseChoose_Submessage();
     while (reader.pos < end) {
@@ -350,7 +350,7 @@ export const SimpleButOptional = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleButOptional {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleButOptional();
     while (reader.pos < end) {
diff --git a/integration/options/google/protobuf/descriptor.ts b/integration/options/google/protobuf/descriptor.ts
index 6469a46d9..c0d012262 100644
--- a/integration/options/google/protobuf/descriptor.ts
+++ b/integration/options/google/protobuf/descriptor.ts
@@ -874,7 +874,7 @@ export const FileDescriptorSet = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileDescriptorSet {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileDescriptorSet();
     while (reader.pos < end) {
@@ -955,7 +955,7 @@ export const FileDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileDescriptorProto();
     while (reader.pos < end) {
@@ -1071,7 +1071,7 @@ export const DescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto();
     while (reader.pos < end) {
@@ -1135,7 +1135,7 @@ export const DescriptorProto_ExtensionRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto_ExtensionRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto_ExtensionRange();
     while (reader.pos < end) {
@@ -1175,7 +1175,7 @@ export const DescriptorProto_ReservedRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto_ReservedRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto_ReservedRange();
     while (reader.pos < end) {
@@ -1209,7 +1209,7 @@ export const ExtensionRangeOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ExtensionRangeOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseExtensionRangeOptions();
     while (reader.pos < end) {
@@ -1282,7 +1282,7 @@ export const FieldDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldDescriptorProto();
     while (reader.pos < end) {
@@ -1346,7 +1346,7 @@ export const OneofDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneofDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneofDescriptorProto();
     while (reader.pos < end) {
@@ -1392,7 +1392,7 @@ export const EnumDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumDescriptorProto();
     while (reader.pos < end) {
@@ -1438,7 +1438,7 @@ export const EnumDescriptorProto_EnumReservedRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumDescriptorProto_EnumReservedRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumDescriptorProto_EnumReservedRange();
     while (reader.pos < end) {
@@ -1478,7 +1478,7 @@ export const EnumValueDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumValueDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumValueDescriptorProto();
     while (reader.pos < end) {
@@ -1521,7 +1521,7 @@ export const ServiceDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ServiceDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseServiceDescriptorProto();
     while (reader.pos < end) {
@@ -1580,7 +1580,7 @@ export const MethodDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MethodDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMethodDescriptorProto();
     while (reader.pos < end) {
@@ -1708,7 +1708,7 @@ export const FileOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileOptions();
     while (reader.pos < end) {
@@ -1817,7 +1817,7 @@ export const MessageOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MessageOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMessageOptions();
     while (reader.pos < end) {
@@ -1878,7 +1878,7 @@ export const FieldOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldOptions();
     while (reader.pos < end) {
@@ -1927,7 +1927,7 @@ export const OneofOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneofOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneofOptions();
     while (reader.pos < end) {
@@ -1964,7 +1964,7 @@ export const EnumOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumOptions();
     while (reader.pos < end) {
@@ -2004,7 +2004,7 @@ export const EnumValueOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumValueOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumValueOptions();
     while (reader.pos < end) {
@@ -2041,7 +2041,7 @@ export const ServiceOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ServiceOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseServiceOptions();
     while (reader.pos < end) {
@@ -2081,7 +2081,7 @@ export const MethodOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MethodOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMethodOptions();
     while (reader.pos < end) {
@@ -2144,7 +2144,7 @@ export const UninterpretedOption = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UninterpretedOption {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUninterpretedOption();
     while (reader.pos < end) {
@@ -2196,7 +2196,7 @@ export const UninterpretedOption_NamePart = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UninterpretedOption_NamePart {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUninterpretedOption_NamePart();
     while (reader.pos < end) {
@@ -2230,7 +2230,7 @@ export const SourceCodeInfo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SourceCodeInfo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSourceCodeInfo();
     while (reader.pos < end) {
@@ -2277,7 +2277,7 @@ export const SourceCodeInfo_Location = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SourceCodeInfo_Location {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSourceCodeInfo_Location();
     while (reader.pos < end) {
@@ -2334,7 +2334,7 @@ export const GeneratedCodeInfo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GeneratedCodeInfo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGeneratedCodeInfo();
     while (reader.pos < end) {
@@ -2376,7 +2376,7 @@ export const GeneratedCodeInfo_Annotation = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GeneratedCodeInfo_Annotation {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGeneratedCodeInfo_Annotation();
     while (reader.pos < end) {
diff --git a/integration/options/options.ts b/integration/options/options.ts
index f0b907540..c21d07eb3 100644
--- a/integration/options/options.ts
+++ b/integration/options/options.ts
@@ -47,7 +47,7 @@ export const MyMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MyMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMyMessage();
     while (reader.pos < end) {
@@ -84,7 +84,7 @@ export const RequestType = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): RequestType {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseRequestType();
     while (reader.pos < end) {
@@ -109,7 +109,7 @@ export const ResponseType = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ResponseType {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseResponseType();
     while (reader.pos < end) {
@@ -139,7 +139,7 @@ export class MyServiceClientImpl implements MyService {
   MyMethod(request: RequestType): Promise<ResponseType> {
     const data = RequestType.encode(request).finish();
     const promise = this.rpc.request(this.service, "MyMethod", data);
-    return promise.then((data) => ResponseType.decode(new _m0.Reader(data)));
+    return promise.then((data) => ResponseType.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/options/something/something.ts b/integration/options/something/something.ts
index 7fb1154f3..b0d49215e 100644
--- a/integration/options/something/something.ts
+++ b/integration/options/something/something.ts
@@ -28,7 +28,7 @@ export const Something = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Something {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSomething();
     while (reader.pos < end) {
diff --git a/integration/output-decode-only/encode.ts b/integration/output-decode-only/encode.ts
index 31b0351a6..b2d0f56c2 100644
--- a/integration/output-decode-only/encode.ts
+++ b/integration/output-decode-only/encode.ts
@@ -13,7 +13,7 @@ function createBaseEncode(): Encode {
 
 export const Encode = {
   decode(input: _m0.Reader | Uint8Array, length?: number): Encode {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEncode();
     while (reader.pos < end) {
diff --git a/integration/output-decode-only/google/protobuf/wrappers.ts b/integration/output-decode-only/google/protobuf/wrappers.ts
index c25da7f81..d28164cad 100644
--- a/integration/output-decode-only/google/protobuf/wrappers.ts
+++ b/integration/output-decode-only/google/protobuf/wrappers.ts
@@ -100,7 +100,7 @@ function createBaseDoubleValue(): DoubleValue {
 
 export const DoubleValue = {
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -124,7 +124,7 @@ function createBaseFloatValue(): FloatValue {
 
 export const FloatValue = {
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -148,7 +148,7 @@ function createBaseInt64Value(): Int64Value {
 
 export const Int64Value = {
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -172,7 +172,7 @@ function createBaseUInt64Value(): UInt64Value {
 
 export const UInt64Value = {
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -196,7 +196,7 @@ function createBaseInt32Value(): Int32Value {
 
 export const Int32Value = {
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -220,7 +220,7 @@ function createBaseUInt32Value(): UInt32Value {
 
 export const UInt32Value = {
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -244,7 +244,7 @@ function createBaseBoolValue(): BoolValue {
 
 export const BoolValue = {
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -268,7 +268,7 @@ function createBaseStringValue(): StringValue {
 
 export const StringValue = {
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -292,7 +292,7 @@ function createBaseBytesValue(): BytesValue {
 
 export const BytesValue = {
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/point/point.ts b/integration/point/point.ts
index 2cfa98809..45a1abdaa 100644
--- a/integration/point/point.ts
+++ b/integration/point/point.ts
@@ -29,7 +29,7 @@ export const Point = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Point {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePoint();
     while (reader.pos < end) {
@@ -88,7 +88,7 @@ export const Area = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Area {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseArea();
     while (reader.pos < end) {
diff --git a/integration/reserved-words/reserved-words.ts b/integration/reserved-words/reserved-words.ts
index 114c97a6c..58ce48546 100644
--- a/integration/reserved-words/reserved-words.ts
+++ b/integration/reserved-words/reserved-words.ts
@@ -16,7 +16,7 @@ export const Record = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Record {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseRecord();
     while (reader.pos < end) {
diff --git a/integration/return-observable/observable.ts b/integration/return-observable/observable.ts
index 26ae460db..0071b1176 100644
--- a/integration/return-observable/observable.ts
+++ b/integration/return-observable/observable.ts
@@ -25,7 +25,7 @@ export const ProduceRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ProduceRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseProduceRequest();
     while (reader.pos < end) {
@@ -76,7 +76,7 @@ export const ProduceReply = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ProduceReply {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseProduceReply();
     while (reader.pos < end) {
diff --git a/integration/simple-deprecated-fields/simple.ts b/integration/simple-deprecated-fields/simple.ts
index 4a5875ef8..cb63a8397 100644
--- a/integration/simple-deprecated-fields/simple.ts
+++ b/integration/simple-deprecated-fields/simple.ts
@@ -58,7 +58,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -135,7 +135,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
diff --git a/integration/simple-esmodule-interop/simple.ts b/integration/simple-esmodule-interop/simple.ts
index e723012eb..770a621f0 100644
--- a/integration/simple-esmodule-interop/simple.ts
+++ b/integration/simple-esmodule-interop/simple.ts
@@ -40,7 +40,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -142,7 +142,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
diff --git a/integration/simple-json-name/google/protobuf/timestamp.ts b/integration/simple-json-name/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/simple-json-name/google/protobuf/timestamp.ts
+++ b/integration/simple-json-name/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-json-name/simple.ts b/integration/simple-json-name/simple.ts
index c4eb1b5c7..c7d20720f 100644
--- a/integration/simple-json-name/simple.ts
+++ b/integration/simple-json-name/simple.ts
@@ -58,7 +58,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
diff --git a/integration/simple-long-bigint/google/protobuf/timestamp.ts b/integration/simple-long-bigint/google/protobuf/timestamp.ts
index 054ee07e9..b07e5dfb0 100644
--- a/integration/simple-long-bigint/google/protobuf/timestamp.ts
+++ b/integration/simple-long-bigint/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-long-bigint/google/protobuf/wrappers.ts b/integration/simple-long-bigint/google/protobuf/wrappers.ts
index 1bdfa04a0..48715d734 100644
--- a/integration/simple-long-bigint/google/protobuf/wrappers.ts
+++ b/integration/simple-long-bigint/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-long-bigint/simple.ts b/integration/simple-long-bigint/simple.ts
index 254001f0c..a49b3ed3f 100644
--- a/integration/simple-long-bigint/simple.ts
+++ b/integration/simple-long-bigint/simple.ts
@@ -97,7 +97,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
diff --git a/integration/simple-long-string/google/protobuf/timestamp.ts b/integration/simple-long-string/google/protobuf/timestamp.ts
index 3778636b8..2c955616e 100644
--- a/integration/simple-long-string/google/protobuf/timestamp.ts
+++ b/integration/simple-long-string/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-long-string/google/protobuf/wrappers.ts b/integration/simple-long-string/google/protobuf/wrappers.ts
index 7df87905c..5f5864746 100644
--- a/integration/simple-long-string/google/protobuf/wrappers.ts
+++ b/integration/simple-long-string/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-long-string/simple.ts b/integration/simple-long-string/simple.ts
index 3eda06fdd..121626abe 100644
--- a/integration/simple-long-string/simple.ts
+++ b/integration/simple-long-string/simple.ts
@@ -90,7 +90,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
diff --git a/integration/simple-long/google/protobuf/wrappers.ts b/integration/simple-long/google/protobuf/wrappers.ts
index 8bdd22fe6..276a821d1 100644
--- a/integration/simple-long/google/protobuf/wrappers.ts
+++ b/integration/simple-long/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-long/simple.ts b/integration/simple-long/simple.ts
index 99a6474f4..80ad248e5 100644
--- a/integration/simple-long/simple.ts
+++ b/integration/simple-long/simple.ts
@@ -81,7 +81,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -180,7 +180,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -372,7 +372,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -431,7 +431,7 @@ export const SimpleWithMap_LongLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_LongLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_LongLookupEntry();
     while (reader.pos < end) {
@@ -544,7 +544,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
diff --git a/integration/simple-optionals/google/protobuf/timestamp.ts b/integration/simple-optionals/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/simple-optionals/google/protobuf/timestamp.ts
+++ b/integration/simple-optionals/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-optionals/google/protobuf/wrappers.ts b/integration/simple-optionals/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/simple-optionals/google/protobuf/wrappers.ts
+++ b/integration/simple-optionals/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-optionals/import_dir/thing.ts b/integration/simple-optionals/import_dir/thing.ts
index 641cef592..7ff94bb95 100644
--- a/integration/simple-optionals/import_dir/thing.ts
+++ b/integration/simple-optionals/import_dir/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/simple-optionals/simple.ts b/integration/simple-optionals/simple.ts
index 3d256d968..cb5e80064 100644
--- a/integration/simple-optionals/simple.ts
+++ b/integration/simple-optionals/simple.ts
@@ -293,7 +293,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -437,7 +437,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
@@ -502,7 +502,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested();
     while (reader.pos < end) {
@@ -573,7 +573,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage();
     while (reader.pos < end) {
@@ -635,7 +635,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage_DeepMessage();
     while (reader.pos < end) {
@@ -691,7 +691,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneOfMessage();
     while (reader.pos < end) {
@@ -762,7 +762,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -847,7 +847,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -904,7 +904,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -1035,7 +1035,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1101,7 +1101,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -1162,7 +1162,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -1218,7 +1218,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap();
     while (reader.pos < end) {
@@ -1295,7 +1295,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1360,7 +1360,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingRequest();
     while (reader.pos < end) {
@@ -1411,7 +1411,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingResponse();
     while (reader.pos < end) {
@@ -1508,7 +1508,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -1629,7 +1629,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/simple-optionals/thing.ts b/integration/simple-optionals/thing.ts
index 89923ce35..abf160624 100644
--- a/integration/simple-optionals/thing.ts
+++ b/integration/simple-optionals/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/simple-proto2/simple.ts b/integration/simple-proto2/simple.ts
index 0d280f797..08ff0665a 100644
--- a/integration/simple-proto2/simple.ts
+++ b/integration/simple-proto2/simple.ts
@@ -53,7 +53,7 @@ export const Issue56 = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Issue56 {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseIssue56();
     while (reader.pos < end) {
diff --git a/integration/simple-prototype-defaults/google/protobuf/timestamp.ts b/integration/simple-prototype-defaults/google/protobuf/timestamp.ts
index 6978be6b9..a77360c68 100644
--- a/integration/simple-prototype-defaults/google/protobuf/timestamp.ts
+++ b/integration/simple-prototype-defaults/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseTimestamp()) as Timestamp;
     while (reader.pos < end) {
diff --git a/integration/simple-prototype-defaults/google/protobuf/wrappers.ts b/integration/simple-prototype-defaults/google/protobuf/wrappers.ts
index 20e5af649..b3031cb05 100644
--- a/integration/simple-prototype-defaults/google/protobuf/wrappers.ts
+++ b/integration/simple-prototype-defaults/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseDoubleValue()) as DoubleValue;
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseFloatValue()) as FloatValue;
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseInt64Value()) as Int64Value;
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseUInt64Value()) as UInt64Value;
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseInt32Value()) as Int32Value;
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseUInt32Value()) as UInt32Value;
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseBoolValue()) as BoolValue;
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseStringValue()) as StringValue;
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseBytesValue()) as BytesValue;
     while (reader.pos < end) {
diff --git a/integration/simple-prototype-defaults/google/type/date.ts b/integration/simple-prototype-defaults/google/type/date.ts
index 02658fb80..e5004fce4 100644
--- a/integration/simple-prototype-defaults/google/type/date.ts
+++ b/integration/simple-prototype-defaults/google/type/date.ts
@@ -53,7 +53,7 @@ export const DateMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DateMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseDateMessage()) as DateMessage;
     while (reader.pos < end) {
diff --git a/integration/simple-prototype-defaults/import_dir/thing.ts b/integration/simple-prototype-defaults/import_dir/thing.ts
index 04ed9afcf..b9724bd0c 100644
--- a/integration/simple-prototype-defaults/import_dir/thing.ts
+++ b/integration/simple-prototype-defaults/import_dir/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseImportedThing()) as ImportedThing;
     while (reader.pos < end) {
diff --git a/integration/simple-prototype-defaults/simple.ts b/integration/simple-prototype-defaults/simple.ts
index 55424b954..5420073ff 100644
--- a/integration/simple-prototype-defaults/simple.ts
+++ b/integration/simple-prototype-defaults/simple.ts
@@ -367,7 +367,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimple()) as Simple;
     while (reader.pos < end) {
@@ -537,7 +537,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseChild()) as Child;
     while (reader.pos < end) {
@@ -602,7 +602,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseNested()) as Nested;
     while (reader.pos < end) {
@@ -673,7 +673,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseNested_InnerMessage()) as Nested_InnerMessage;
     while (reader.pos < end) {
@@ -735,7 +735,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseNested_InnerMessage_DeepMessage()) as Nested_InnerMessage_DeepMessage;
     while (reader.pos < end) {
@@ -791,7 +791,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseOneOfMessage()) as OneOfMessage;
     while (reader.pos < end) {
@@ -865,7 +865,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithWrappers()) as SimpleWithWrappers;
     while (reader.pos < end) {
@@ -956,7 +956,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseEntity()) as Entity;
     while (reader.pos < end) {
@@ -1035,7 +1035,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap()) as SimpleWithMap;
     while (reader.pos < end) {
@@ -1276,7 +1276,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_EntitiesByIdEntry()) as SimpleWithMap_EntitiesByIdEntry;
     while (reader.pos < end) {
@@ -1342,7 +1342,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_NameLookupEntry()) as SimpleWithMap_NameLookupEntry;
     while (reader.pos < end) {
@@ -1403,7 +1403,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_IntLookupEntry()) as SimpleWithMap_IntLookupEntry;
     while (reader.pos < end) {
@@ -1462,7 +1462,7 @@ export const SimpleWithMap_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_MapOfTimestampsEntry()) as SimpleWithMap_MapOfTimestampsEntry;
     while (reader.pos < end) {
@@ -1528,7 +1528,7 @@ export const SimpleWithMap_MapOfBytesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfBytesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_MapOfBytesEntry()) as SimpleWithMap_MapOfBytesEntry;
     while (reader.pos < end) {
@@ -1593,7 +1593,7 @@ export const SimpleWithMap_MapOfStringValuesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfStringValuesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(
       createBaseSimpleWithMap_MapOfStringValuesEntry(),
@@ -1663,7 +1663,7 @@ export const SimpleWithMap_LongLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_LongLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMap_LongLookupEntry()) as SimpleWithMap_LongLookupEntry;
     while (reader.pos < end) {
@@ -1721,7 +1721,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithSnakeCaseMap()) as SimpleWithSnakeCaseMap;
     while (reader.pos < end) {
@@ -1798,7 +1798,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(
       createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry(),
@@ -1867,7 +1867,7 @@ export const SimpleWithMapOfEnums = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleWithMapOfEnums()) as SimpleWithMapOfEnums;
     while (reader.pos < end) {
@@ -1944,7 +1944,7 @@ export const SimpleWithMapOfEnums_EnumsByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums_EnumsByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(
       createBaseSimpleWithMapOfEnums_EnumsByIdEntry(),
@@ -2011,7 +2011,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBasePingRequest()) as PingRequest;
     while (reader.pos < end) {
@@ -2062,7 +2062,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBasePingResponse()) as PingResponse;
     while (reader.pos < end) {
@@ -2159,7 +2159,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseNumbers()) as Numbers;
     while (reader.pos < end) {
@@ -2304,7 +2304,7 @@ export const SimpleButOptional = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleButOptional {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseSimpleButOptional()) as SimpleButOptional;
     while (reader.pos < end) {
@@ -2396,7 +2396,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = Object.create(createBaseEmpty()) as Empty;
     while (reader.pos < end) {
@@ -2444,7 +2444,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/simple-snake/google/protobuf/struct.ts b/integration/simple-snake/google/protobuf/struct.ts
index 4dbdbd8a4..7798e7e51 100644
--- a/integration/simple-snake/google/protobuf/struct.ts
+++ b/integration/simple-snake/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/simple-snake/google/protobuf/timestamp.ts b/integration/simple-snake/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/simple-snake/google/protobuf/timestamp.ts
+++ b/integration/simple-snake/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-snake/google/protobuf/wrappers.ts b/integration/simple-snake/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/simple-snake/google/protobuf/wrappers.ts
+++ b/integration/simple-snake/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-snake/import_dir/thing.ts b/integration/simple-snake/import_dir/thing.ts
index 938a980d8..b1357f51b 100644
--- a/integration/simple-snake/import_dir/thing.ts
+++ b/integration/simple-snake/import_dir/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/simple-snake/simple.ts b/integration/simple-snake/simple.ts
index 31a498425..ae860a031 100644
--- a/integration/simple-snake/simple.ts
+++ b/integration/simple-snake/simple.ts
@@ -298,7 +298,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -442,7 +442,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
@@ -507,7 +507,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested();
     while (reader.pos < end) {
@@ -578,7 +578,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage();
     while (reader.pos < end) {
@@ -640,7 +640,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage_DeepMessage();
     while (reader.pos < end) {
@@ -696,7 +696,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneOfMessage();
     while (reader.pos < end) {
@@ -767,7 +767,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -852,7 +852,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -909,7 +909,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -1040,7 +1040,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1106,7 +1106,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -1167,7 +1167,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -1223,7 +1223,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap();
     while (reader.pos < end) {
@@ -1300,7 +1300,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1365,7 +1365,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingRequest();
     while (reader.pos < end) {
@@ -1416,7 +1416,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingResponse();
     while (reader.pos < end) {
@@ -1513,7 +1513,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -1632,7 +1632,7 @@ export const SimpleStruct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleStruct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleStruct();
     while (reader.pos < end) {
@@ -1685,7 +1685,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/simple-string-enums/google/protobuf/struct.ts b/integration/simple-string-enums/google/protobuf/struct.ts
index 09cb4ca9b..7467b4700 100644
--- a/integration/simple-string-enums/google/protobuf/struct.ts
+++ b/integration/simple-string-enums/google/protobuf/struct.ts
@@ -125,7 +125,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -222,7 +222,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -300,7 +300,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -421,7 +421,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/simple-string-enums/simple.ts b/integration/simple-string-enums/simple.ts
index ad1e8933d..4ac673b42 100644
--- a/integration/simple-string-enums/simple.ts
+++ b/integration/simple-string-enums/simple.ts
@@ -97,7 +97,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Simple_StateMapEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple_StateMapEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple_StateMapEntry();
     while (reader.pos < end) {
diff --git a/integration/simple-unrecognized-enum/google/protobuf/timestamp.ts b/integration/simple-unrecognized-enum/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/simple-unrecognized-enum/google/protobuf/timestamp.ts
+++ b/integration/simple-unrecognized-enum/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple-unrecognized-enum/google/protobuf/wrappers.ts b/integration/simple-unrecognized-enum/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/simple-unrecognized-enum/google/protobuf/wrappers.ts
+++ b/integration/simple-unrecognized-enum/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple-unrecognized-enum/import_dir/thing.ts b/integration/simple-unrecognized-enum/import_dir/thing.ts
index d97d4521d..987d1d13c 100644
--- a/integration/simple-unrecognized-enum/import_dir/thing.ts
+++ b/integration/simple-unrecognized-enum/import_dir/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/simple-unrecognized-enum/simple.ts b/integration/simple-unrecognized-enum/simple.ts
index cd0df9442..0acd77e68 100644
--- a/integration/simple-unrecognized-enum/simple.ts
+++ b/integration/simple-unrecognized-enum/simple.ts
@@ -281,7 +281,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -425,7 +425,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
@@ -490,7 +490,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested();
     while (reader.pos < end) {
@@ -561,7 +561,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage();
     while (reader.pos < end) {
@@ -623,7 +623,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage_DeepMessage();
     while (reader.pos < end) {
@@ -679,7 +679,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneOfMessage();
     while (reader.pos < end) {
@@ -750,7 +750,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -835,7 +835,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -892,7 +892,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -1023,7 +1023,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1089,7 +1089,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -1150,7 +1150,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -1206,7 +1206,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap();
     while (reader.pos < end) {
@@ -1283,7 +1283,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1348,7 +1348,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingRequest();
     while (reader.pos < end) {
@@ -1399,7 +1399,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingResponse();
     while (reader.pos < end) {
@@ -1496,7 +1496,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -1617,7 +1617,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/simple/google/protobuf/timestamp.ts b/integration/simple/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/simple/google/protobuf/timestamp.ts
+++ b/integration/simple/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/simple/google/protobuf/wrappers.ts b/integration/simple/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/simple/google/protobuf/wrappers.ts
+++ b/integration/simple/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/simple/google/type/date.ts b/integration/simple/google/type/date.ts
index 4a8efca31..23f4702d4 100644
--- a/integration/simple/google/type/date.ts
+++ b/integration/simple/google/type/date.ts
@@ -53,7 +53,7 @@ export const DateMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DateMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDateMessage();
     while (reader.pos < end) {
diff --git a/integration/simple/import_dir/thing.ts b/integration/simple/import_dir/thing.ts
index d97d4521d..987d1d13c 100644
--- a/integration/simple/import_dir/thing.ts
+++ b/integration/simple/import_dir/thing.ts
@@ -21,7 +21,7 @@ export const ImportedThing = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ImportedThing {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseImportedThing();
     while (reader.pos < end) {
diff --git a/integration/simple/simple-service-test.ts b/integration/simple/simple-service-test.ts
index 8549bc122..7b7b5aa98 100644
--- a/integration/simple/simple-service-test.ts
+++ b/integration/simple/simple-service-test.ts
@@ -3,7 +3,7 @@ import { PingRequest, PingServiceClientImpl } from './simple';
 describe('simple', () => {
   it('binds rpc function', () => {
     const rpc = {
-      request: jest.fn().mockResolvedValue({}),
+      request: jest.fn().mockResolvedValue(Buffer.from([])),
     };
     const client = new PingServiceClientImpl(rpc);
     const ping = client.ping;
diff --git a/integration/simple/simple.ts b/integration/simple/simple.ts
index 96f2df349..7954752da 100644
--- a/integration/simple/simple.ts
+++ b/integration/simple/simple.ts
@@ -372,7 +372,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -548,7 +548,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
@@ -613,7 +613,7 @@ export const Nested = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested();
     while (reader.pos < end) {
@@ -684,7 +684,7 @@ export const Nested_InnerMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage();
     while (reader.pos < end) {
@@ -746,7 +746,7 @@ export const Nested_InnerMessage_DeepMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Nested_InnerMessage_DeepMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNested_InnerMessage_DeepMessage();
     while (reader.pos < end) {
@@ -802,7 +802,7 @@ export const OneOfMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneOfMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneOfMessage();
     while (reader.pos < end) {
@@ -876,7 +876,7 @@ export const SimpleWithWrappers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithWrappers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithWrappers();
     while (reader.pos < end) {
@@ -967,7 +967,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -1046,7 +1046,7 @@ export const SimpleWithMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap();
     while (reader.pos < end) {
@@ -1287,7 +1287,7 @@ export const SimpleWithMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1353,7 +1353,7 @@ export const SimpleWithMap_NameLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_NameLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_NameLookupEntry();
     while (reader.pos < end) {
@@ -1414,7 +1414,7 @@ export const SimpleWithMap_IntLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_IntLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_IntLookupEntry();
     while (reader.pos < end) {
@@ -1473,7 +1473,7 @@ export const SimpleWithMap_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_MapOfTimestampsEntry();
     while (reader.pos < end) {
@@ -1539,7 +1539,7 @@ export const SimpleWithMap_MapOfBytesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfBytesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_MapOfBytesEntry();
     while (reader.pos < end) {
@@ -1604,7 +1604,7 @@ export const SimpleWithMap_MapOfStringValuesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_MapOfStringValuesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_MapOfStringValuesEntry();
     while (reader.pos < end) {
@@ -1670,7 +1670,7 @@ export const SimpleWithMap_LongLookupEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMap_LongLookupEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMap_LongLookupEntry();
     while (reader.pos < end) {
@@ -1728,7 +1728,7 @@ export const SimpleWithSnakeCaseMap = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap();
     while (reader.pos < end) {
@@ -1805,7 +1805,7 @@ export const SimpleWithSnakeCaseMap_EntitiesByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithSnakeCaseMap_EntitiesByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithSnakeCaseMap_EntitiesByIdEntry();
     while (reader.pos < end) {
@@ -1870,7 +1870,7 @@ export const SimpleWithMapOfEnums = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMapOfEnums();
     while (reader.pos < end) {
@@ -1947,7 +1947,7 @@ export const SimpleWithMapOfEnums_EnumsByIdEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleWithMapOfEnums_EnumsByIdEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleWithMapOfEnums_EnumsByIdEntry();
     while (reader.pos < end) {
@@ -2010,7 +2010,7 @@ export const PingRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingRequest();
     while (reader.pos < end) {
@@ -2061,7 +2061,7 @@ export const PingResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): PingResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBasePingResponse();
     while (reader.pos < end) {
@@ -2158,7 +2158,7 @@ export const Numbers = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Numbers {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseNumbers();
     while (reader.pos < end) {
@@ -2303,7 +2303,7 @@ export const SimpleButOptional = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SimpleButOptional {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimpleButOptional();
     while (reader.pos < end) {
@@ -2395,7 +2395,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
@@ -2443,7 +2443,7 @@ export class PingServiceClientImpl implements PingService {
   ping(request: PingRequest): Promise<PingResponse> {
     const data = PingRequest.encode(request).finish();
     const promise = this.rpc.request(this.service, "ping", data);
-    return promise.then((data) => PingResponse.decode(new _m0.Reader(data)));
+    return promise.then((data) => PingResponse.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/struct/google/protobuf/struct.ts b/integration/struct/google/protobuf/struct.ts
index cc3f1bebd..7307c351c 100644
--- a/integration/struct/google/protobuf/struct.ts
+++ b/integration/struct/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/struct/struct.ts b/integration/struct/struct.ts
index 2384c5c5b..b597cec19 100644
--- a/integration/struct/struct.ts
+++ b/integration/struct/struct.ts
@@ -21,7 +21,7 @@ export const StructMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StructMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStructMessage();
     while (reader.pos < end) {
diff --git a/integration/type-registry/bar/bar.ts b/integration/type-registry/bar/bar.ts
index b93b23996..c14588dca 100644
--- a/integration/type-registry/bar/bar.ts
+++ b/integration/type-registry/bar/bar.ts
@@ -25,7 +25,7 @@ export const Bar = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Bar {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBar();
     while (reader.pos < end) {
diff --git a/integration/type-registry/foo.ts b/integration/type-registry/foo.ts
index 388956209..14c48d549 100644
--- a/integration/type-registry/foo.ts
+++ b/integration/type-registry/foo.ts
@@ -36,7 +36,7 @@ export const Foo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Foo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFoo();
     while (reader.pos < end) {
@@ -91,7 +91,7 @@ export const Foo2 = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Foo2 {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFoo2();
     while (reader.pos < end) {
@@ -146,7 +146,7 @@ export const WithStruct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): WithStruct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseWithStruct();
     while (reader.pos < end) {
diff --git a/integration/type-registry/google/protobuf/struct.ts b/integration/type-registry/google/protobuf/struct.ts
index 4eb87ba66..c6873fe86 100644
--- a/integration/type-registry/google/protobuf/struct.ts
+++ b/integration/type-registry/google/protobuf/struct.ts
@@ -125,7 +125,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -227,7 +227,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -314,7 +314,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -440,7 +440,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/type-registry/google/protobuf/timestamp.ts b/integration/type-registry/google/protobuf/timestamp.ts
index c85054eae..a160eb926 100644
--- a/integration/type-registry/google/protobuf/timestamp.ts
+++ b/integration/type-registry/google/protobuf/timestamp.ts
@@ -131,7 +131,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/types-with-underscores/file.ts b/integration/types-with-underscores/file.ts
index 729efc0e6..41c9f4d4d 100644
--- a/integration/types-with-underscores/file.ts
+++ b/integration/types-with-underscores/file.ts
@@ -23,7 +23,7 @@ export const Baz = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Baz {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBaz();
     while (reader.pos < end) {
@@ -71,7 +71,7 @@ export const FooBar = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FooBar {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFooBar();
     while (reader.pos < end) {
diff --git a/integration/unknown-fields/google/protobuf/compiler/plugin.ts b/integration/unknown-fields/google/protobuf/compiler/plugin.ts
index 21528d58c..364c81e48 100644
--- a/integration/unknown-fields/google/protobuf/compiler/plugin.ts
+++ b/integration/unknown-fields/google/protobuf/compiler/plugin.ts
@@ -178,7 +178,7 @@ export const Version = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Version {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseVersion();
     (message as any)._unknownFields = {};
@@ -247,7 +247,7 @@ export const CodeGeneratorRequest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): CodeGeneratorRequest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseCodeGeneratorRequest();
     (message as any)._unknownFields = {};
@@ -313,7 +313,7 @@ export const CodeGeneratorResponse = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): CodeGeneratorResponse {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseCodeGeneratorResponse();
     (message as any)._unknownFields = {};
@@ -379,7 +379,7 @@ export const CodeGeneratorResponse_File = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): CodeGeneratorResponse_File {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseCodeGeneratorResponse_File();
     (message as any)._unknownFields = {};
diff --git a/integration/unknown-fields/google/protobuf/descriptor.ts b/integration/unknown-fields/google/protobuf/descriptor.ts
index fcf9f0783..fd413bccf 100644
--- a/integration/unknown-fields/google/protobuf/descriptor.ts
+++ b/integration/unknown-fields/google/protobuf/descriptor.ts
@@ -887,7 +887,7 @@ export const FileDescriptorSet = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileDescriptorSet {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileDescriptorSet();
     (message as any)._unknownFields = {};
@@ -988,7 +988,7 @@ export const FileDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1124,7 +1124,7 @@ export const DescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1208,7 +1208,7 @@ export const DescriptorProto_ExtensionRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto_ExtensionRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto_ExtensionRange();
     (message as any)._unknownFields = {};
@@ -1268,7 +1268,7 @@ export const DescriptorProto_ReservedRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DescriptorProto_ReservedRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDescriptorProto_ReservedRange();
     (message as any)._unknownFields = {};
@@ -1322,7 +1322,7 @@ export const ExtensionRangeOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ExtensionRangeOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseExtensionRangeOptions();
     (message as any)._unknownFields = {};
@@ -1415,7 +1415,7 @@ export const FieldDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1499,7 +1499,7 @@ export const OneofDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneofDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneofDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1565,7 +1565,7 @@ export const EnumDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1631,7 +1631,7 @@ export const EnumDescriptorProto_EnumReservedRange = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumDescriptorProto_EnumReservedRange {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumDescriptorProto_EnumReservedRange();
     (message as any)._unknownFields = {};
@@ -1691,7 +1691,7 @@ export const EnumValueDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumValueDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumValueDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1754,7 +1754,7 @@ export const ServiceDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ServiceDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseServiceDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1833,7 +1833,7 @@ export const MethodDescriptorProto = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MethodDescriptorProto {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMethodDescriptorProto();
     (message as any)._unknownFields = {};
@@ -1981,7 +1981,7 @@ export const FileOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FileOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFileOptions();
     (message as any)._unknownFields = {};
@@ -2110,7 +2110,7 @@ export const MessageOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MessageOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMessageOptions();
     (message as any)._unknownFields = {};
@@ -2191,7 +2191,7 @@ export const FieldOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldOptions();
     (message as any)._unknownFields = {};
@@ -2260,7 +2260,7 @@ export const OneofOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OneofOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOneofOptions();
     (message as any)._unknownFields = {};
@@ -2317,7 +2317,7 @@ export const EnumOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumOptions();
     (message as any)._unknownFields = {};
@@ -2377,7 +2377,7 @@ export const EnumValueOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): EnumValueOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEnumValueOptions();
     (message as any)._unknownFields = {};
@@ -2434,7 +2434,7 @@ export const ServiceOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ServiceOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseServiceOptions();
     (message as any)._unknownFields = {};
@@ -2494,7 +2494,7 @@ export const MethodOptions = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MethodOptions {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMethodOptions();
     (message as any)._unknownFields = {};
@@ -2577,7 +2577,7 @@ export const UninterpretedOption = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UninterpretedOption {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUninterpretedOption();
     (message as any)._unknownFields = {};
@@ -2649,7 +2649,7 @@ export const UninterpretedOption_NamePart = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UninterpretedOption_NamePart {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUninterpretedOption_NamePart();
     (message as any)._unknownFields = {};
@@ -2703,7 +2703,7 @@ export const SourceCodeInfo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SourceCodeInfo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSourceCodeInfo();
     (message as any)._unknownFields = {};
@@ -2770,7 +2770,7 @@ export const SourceCodeInfo_Location = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SourceCodeInfo_Location {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSourceCodeInfo_Location();
     (message as any)._unknownFields = {};
@@ -2847,7 +2847,7 @@ export const GeneratedCodeInfo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GeneratedCodeInfo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGeneratedCodeInfo();
     (message as any)._unknownFields = {};
@@ -2909,7 +2909,7 @@ export const GeneratedCodeInfo_Annotation = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): GeneratedCodeInfo_Annotation {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseGeneratedCodeInfo_Annotation();
     (message as any)._unknownFields = {};
diff --git a/integration/unknown-fields/options.ts b/integration/unknown-fields/options.ts
index f56eae9a9..91db8b57b 100644
--- a/integration/unknown-fields/options.ts
+++ b/integration/unknown-fields/options.ts
@@ -58,7 +58,7 @@ export const MyMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): MyMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMyMessage();
     (message as any)._unknownFields = {};
@@ -115,7 +115,7 @@ export const RequestType = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): RequestType {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseRequestType();
     (message as any)._unknownFields = {};
@@ -160,7 +160,7 @@ export const ResponseType = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ResponseType {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseResponseType();
     (message as any)._unknownFields = {};
@@ -196,7 +196,7 @@ export class MyServiceClientImpl implements MyService {
   MyMethod(request: RequestType): Promise<ResponseType> {
     const data = RequestType.encode(request).finish();
     const promise = this.rpc.request(this.service, "MyMethod", data);
-    return promise.then((data) => ResponseType.decode(new _m0.Reader(data)));
+    return promise.then((data) => ResponseType.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/unknown-fields/something/something.ts b/integration/unknown-fields/something/something.ts
index 2ce718a3f..aa2b43eb2 100644
--- a/integration/unknown-fields/something/something.ts
+++ b/integration/unknown-fields/something/something.ts
@@ -40,7 +40,7 @@ export const Something = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Something {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSomething();
     (message as any)._unknownFields = {};
diff --git a/integration/use-date-false/google/protobuf/timestamp.ts b/integration/use-date-false/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/use-date-false/google/protobuf/timestamp.ts
+++ b/integration/use-date-false/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/use-date-false/metadata.ts b/integration/use-date-false/metadata.ts
index 9de157f94..4ca89d32d 100644
--- a/integration/use-date-false/metadata.ts
+++ b/integration/use-date-false/metadata.ts
@@ -21,7 +21,7 @@ export const Metadata = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Metadata {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMetadata();
     while (reader.pos < end) {
diff --git a/integration/use-date-string/google/protobuf/timestamp.ts b/integration/use-date-string/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/use-date-string/google/protobuf/timestamp.ts
+++ b/integration/use-date-string/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/use-date-string/use-date-string.ts b/integration/use-date-string/use-date-string.ts
index 6c77fb921..06fcee0fd 100644
--- a/integration/use-date-string/use-date-string.ts
+++ b/integration/use-date-string/use-date-string.ts
@@ -42,7 +42,7 @@ export const Todo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo();
     while (reader.pos < end) {
@@ -149,7 +149,7 @@ export const Todo_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo_MapOfTimestampsEntry();
     while (reader.pos < end) {
diff --git a/integration/use-date-true/google/protobuf/empty.ts b/integration/use-date-true/google/protobuf/empty.ts
index aa4359b94..cbc07ea77 100644
--- a/integration/use-date-true/google/protobuf/empty.ts
+++ b/integration/use-date-true/google/protobuf/empty.ts
@@ -27,7 +27,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/use-date-true/google/protobuf/timestamp.ts b/integration/use-date-true/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/use-date-true/google/protobuf/timestamp.ts
+++ b/integration/use-date-true/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/use-date-true/use-date-true.ts b/integration/use-date-true/use-date-true.ts
index 4d815ca64..e3720e2ef 100644
--- a/integration/use-date-true/use-date-true.ts
+++ b/integration/use-date-true/use-date-true.ts
@@ -43,7 +43,7 @@ export const Todo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo();
     while (reader.pos < end) {
@@ -150,7 +150,7 @@ export const Todo_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo_MapOfTimestampsEntry();
     while (reader.pos < end) {
@@ -211,7 +211,7 @@ export class ClockClientImpl implements Clock {
   Now(request: Empty): Promise<Timestamp> {
     const data = Empty.encode(request).finish();
     const promise = this.rpc.request(this.service, "Now", data);
-    return promise.then((data) => Timestamp.decode(new _m0.Reader(data)));
+    return promise.then((data) => Timestamp.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/integration/use-exact-types-false/foo.ts b/integration/use-exact-types-false/foo.ts
index 5503d4684..73a437880 100644
--- a/integration/use-exact-types-false/foo.ts
+++ b/integration/use-exact-types-false/foo.ts
@@ -24,7 +24,7 @@ export const Foo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Foo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFoo();
     while (reader.pos < end) {
diff --git a/integration/use-map-type/google/protobuf/struct.ts b/integration/use-map-type/google/protobuf/struct.ts
index ffcb6b973..7911e5573 100644
--- a/integration/use-map-type/google/protobuf/struct.ts
+++ b/integration/use-map-type/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -210,7 +210,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -288,7 +288,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -409,7 +409,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/use-map-type/google/protobuf/timestamp.ts b/integration/use-map-type/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/use-map-type/google/protobuf/timestamp.ts
+++ b/integration/use-map-type/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/use-map-type/use-map-type.ts b/integration/use-map-type/use-map-type.ts
index 708a5b59e..67855dea9 100644
--- a/integration/use-map-type/use-map-type.ts
+++ b/integration/use-map-type/use-map-type.ts
@@ -57,7 +57,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity();
     while (reader.pos < end) {
@@ -130,7 +130,7 @@ export const Maps = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps();
     while (reader.pos < end) {
@@ -321,7 +321,7 @@ export const Maps_StrToEntityEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps_StrToEntityEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps_StrToEntityEntry();
     while (reader.pos < end) {
@@ -385,7 +385,7 @@ export const Maps_Int32ToInt32Entry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps_Int32ToInt32Entry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps_Int32ToInt32Entry();
     while (reader.pos < end) {
@@ -444,7 +444,7 @@ export const Maps_StringToBytesEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps_StringToBytesEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps_StringToBytesEntry();
     while (reader.pos < end) {
@@ -507,7 +507,7 @@ export const Maps_Int64ToInt64Entry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps_Int64ToInt64Entry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps_Int64ToInt64Entry();
     while (reader.pos < end) {
@@ -566,7 +566,7 @@ export const Maps_MapOfTimestampsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Maps_MapOfTimestampsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseMaps_MapOfTimestampsEntry();
     while (reader.pos < end) {
diff --git a/integration/use-numeric-enum-json/google/protobuf/struct.ts b/integration/use-numeric-enum-json/google/protobuf/struct.ts
index 78ae9698f..e68bbbbd9 100644
--- a/integration/use-numeric-enum-json/google/protobuf/struct.ts
+++ b/integration/use-numeric-enum-json/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/use-numeric-enum-json/simple.ts b/integration/use-numeric-enum-json/simple.ts
index eed465e4f..abb549777 100644
--- a/integration/use-numeric-enum-json/simple.ts
+++ b/integration/use-numeric-enum-json/simple.ts
@@ -83,7 +83,7 @@ export const Simple = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple();
     while (reader.pos < end) {
@@ -195,7 +195,7 @@ export const Simple_StateMapEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Simple_StateMapEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSimple_StateMapEntry();
     while (reader.pos < end) {
diff --git a/integration/use-objectid-true-external-import/objectid/objectid.ts b/integration/use-objectid-true-external-import/objectid/objectid.ts
index a9cc80eab..89b9a64ea 100644
--- a/integration/use-objectid-true-external-import/objectid/objectid.ts
+++ b/integration/use-objectid-true-external-import/objectid/objectid.ts
@@ -20,7 +20,7 @@ export const ObjectId = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ObjectId {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseObjectId();
     while (reader.pos < end) {
diff --git a/integration/use-objectid-true-external-import/use-objectid-true.ts b/integration/use-objectid-true-external-import/use-objectid-true.ts
index 21a6cf021..bd994df08 100644
--- a/integration/use-objectid-true-external-import/use-objectid-true.ts
+++ b/integration/use-objectid-true-external-import/use-objectid-true.ts
@@ -43,7 +43,7 @@ export const Todo = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo();
     while (reader.pos < end) {
@@ -150,7 +150,7 @@ export const Todo_MapOfOidsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Todo_MapOfOidsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTodo_MapOfOidsEntry();
     while (reader.pos < end) {
diff --git a/integration/use-optionals-all/test.ts b/integration/use-optionals-all/test.ts
index 48b129ef5..5d2b6aa98 100644
--- a/integration/use-optionals-all/test.ts
+++ b/integration/use-optionals-all/test.ts
@@ -197,7 +197,7 @@ export const OptionalsTest = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OptionalsTest {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOptionalsTest();
     while (reader.pos < end) {
@@ -461,7 +461,7 @@ export const OptionalsTest_TranslationsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): OptionalsTest_TranslationsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseOptionalsTest_TranslationsEntry();
     while (reader.pos < end) {
@@ -516,7 +516,7 @@ export const Child = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Child {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseChild();
     while (reader.pos < end) {
diff --git a/integration/use-readonly-types/google/protobuf/field_mask.ts b/integration/use-readonly-types/google/protobuf/field_mask.ts
index 7f2e0b019..90ced36df 100644
--- a/integration/use-readonly-types/google/protobuf/field_mask.ts
+++ b/integration/use-readonly-types/google/protobuf/field_mask.ts
@@ -221,7 +221,7 @@ export const FieldMask = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FieldMask {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFieldMask() as any;
     while (reader.pos < end) {
diff --git a/integration/use-readonly-types/google/protobuf/struct.ts b/integration/use-readonly-types/google/protobuf/struct.ts
index dab354cd9..d478f2b59 100644
--- a/integration/use-readonly-types/google/protobuf/struct.ts
+++ b/integration/use-readonly-types/google/protobuf/struct.ts
@@ -100,7 +100,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct() as any;
     while (reader.pos < end) {
@@ -197,7 +197,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry() as any;
     while (reader.pos < end) {
@@ -270,7 +270,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue() as any;
     while (reader.pos < end) {
@@ -423,7 +423,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue() as any;
     while (reader.pos < end) {
diff --git a/integration/use-readonly-types/use-readonly-types.ts b/integration/use-readonly-types/use-readonly-types.ts
index 7f1f6f055..cd1a28734 100644
--- a/integration/use-readonly-types/use-readonly-types.ts
+++ b/integration/use-readonly-types/use-readonly-types.ts
@@ -88,7 +88,7 @@ export const Entity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Entity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEntity() as any;
     while (reader.pos < end) {
@@ -246,7 +246,7 @@ export const SubEntity = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): SubEntity {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseSubEntity() as any;
     while (reader.pos < end) {
diff --git a/integration/value/google/protobuf/struct.ts b/integration/value/google/protobuf/struct.ts
index cc3f1bebd..7307c351c 100644
--- a/integration/value/google/protobuf/struct.ts
+++ b/integration/value/google/protobuf/struct.ts
@@ -115,7 +115,7 @@ export const Struct = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct();
     while (reader.pos < end) {
@@ -212,7 +212,7 @@ export const Struct_FieldsEntry = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Struct_FieldsEntry {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStruct_FieldsEntry();
     while (reader.pos < end) {
@@ -290,7 +290,7 @@ export const Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValue();
     while (reader.pos < end) {
@@ -411,7 +411,7 @@ export const ListValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ListValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseListValue();
     while (reader.pos < end) {
diff --git a/integration/value/google/protobuf/wrappers.ts b/integration/value/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/value/google/protobuf/wrappers.ts
+++ b/integration/value/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/value/value.ts b/integration/value/value.ts
index 4124b4282..1afcdb9ea 100644
--- a/integration/value/value.ts
+++ b/integration/value/value.ts
@@ -38,7 +38,7 @@ export const ValueMessage = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): ValueMessage {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseValueMessage();
     while (reader.pos < end) {
diff --git a/integration/vector-tile/vector_tile.ts b/integration/vector-tile/vector_tile.ts
index 8ce690057..232af9fec 100644
--- a/integration/vector-tile/vector_tile.ts
+++ b/integration/vector-tile/vector_tile.ts
@@ -92,7 +92,7 @@ export const Tile = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Tile {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTile();
     while (reader.pos < end) {
@@ -165,7 +165,7 @@ export const Tile_Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Tile_Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTile_Value();
     while (reader.pos < end) {
@@ -267,7 +267,7 @@ export const Tile_Feature = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Tile_Feature {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTile_Feature();
     while (reader.pos < end) {
@@ -375,7 +375,7 @@ export const Tile_Layer = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Tile_Layer {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTile_Layer();
     while (reader.pos < end) {
diff --git a/integration/wrappers-regression/google/protobuf/empty.ts b/integration/wrappers-regression/google/protobuf/empty.ts
index aa4359b94..cbc07ea77 100644
--- a/integration/wrappers-regression/google/protobuf/empty.ts
+++ b/integration/wrappers-regression/google/protobuf/empty.ts
@@ -27,7 +27,7 @@ export const Empty = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Empty {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseEmpty();
     while (reader.pos < end) {
diff --git a/integration/wrappers-regression/google/protobuf/timestamp.ts b/integration/wrappers-regression/google/protobuf/timestamp.ts
index c7e0b76c4..f2eb558c2 100644
--- a/integration/wrappers-regression/google/protobuf/timestamp.ts
+++ b/integration/wrappers-regression/google/protobuf/timestamp.ts
@@ -127,7 +127,7 @@ export const Timestamp = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Timestamp {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseTimestamp();
     while (reader.pos < end) {
diff --git a/integration/wrappers-regression/google/protobuf/wrappers.ts b/integration/wrappers-regression/google/protobuf/wrappers.ts
index 5f08c7994..3d215fc57 100644
--- a/integration/wrappers-regression/google/protobuf/wrappers.ts
+++ b/integration/wrappers-regression/google/protobuf/wrappers.ts
@@ -107,7 +107,7 @@ export const DoubleValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): DoubleValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseDoubleValue();
     while (reader.pos < end) {
@@ -158,7 +158,7 @@ export const FloatValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): FloatValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseFloatValue();
     while (reader.pos < end) {
@@ -209,7 +209,7 @@ export const Int64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt64Value();
     while (reader.pos < end) {
@@ -260,7 +260,7 @@ export const UInt64Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt64Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt64Value();
     while (reader.pos < end) {
@@ -311,7 +311,7 @@ export const Int32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): Int32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseInt32Value();
     while (reader.pos < end) {
@@ -362,7 +362,7 @@ export const UInt32Value = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): UInt32Value {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseUInt32Value();
     while (reader.pos < end) {
@@ -413,7 +413,7 @@ export const BoolValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BoolValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBoolValue();
     while (reader.pos < end) {
@@ -464,7 +464,7 @@ export const StringValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): StringValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseStringValue();
     while (reader.pos < end) {
@@ -515,7 +515,7 @@ export const BytesValue = {
   },
 
   decode(input: _m0.Reader | Uint8Array, length?: number): BytesValue {
-    const reader = input instanceof _m0.Reader ? input : new _m0.Reader(input);
+    const reader = input instanceof _m0.Reader ? input : _m0.Reader.create(input);
     let end = length === undefined ? reader.len : reader.pos + length;
     const message = createBaseBytesValue();
     while (reader.pos < end) {
diff --git a/integration/wrappers-regression/wrappers-regression.ts b/integration/wrappers-regression/wrappers-regression.ts
index b8147b2fc..9a9dcb540 100644
--- a/integration/wrappers-regression/wrappers-regression.ts
+++ b/integration/wrappers-regression/wrappers-regression.ts
@@ -29,25 +29,25 @@ export class ClockClientImpl implements Clock {
   Now(request: Empty): Promise<Timestamp> {
     const data = Empty.encode(request).finish();
     const promise = this.rpc.request(this.service, "Now", data);
-    return promise.then((data) => Timestamp.decode(new _m0.Reader(data)));
+    return promise.then((data) => Timestamp.decode(_m0.Reader.create(data)));
   }
 
   NowString(request: StringValue): Promise<StringValue> {
     const data = StringValue.encode(request).finish();
     const promise = this.rpc.request(this.service, "NowString", data);
-    return promise.then((data) => StringValue.decode(new _m0.Reader(data)));
+    return promise.then((data) => StringValue.decode(_m0.Reader.create(data)));
   }
 
   NowStringStream(request: Observable<StringValue>): Observable<StringValue> {
     const data = request.pipe(map((request) => StringValue.encode(request).finish()));
     const result = this.rpc.bidirectionalStreamingRequest(this.service, "NowStringStream", data);
-    return result.pipe(map((data) => StringValue.decode(new _m0.Reader(data))));
+    return result.pipe(map((data) => StringValue.decode(_m0.Reader.create(data))));
   }
 
   NowBool(request: Empty): Promise<BoolValue> {
     const data = Empty.encode(request).finish();
     const promise = this.rpc.request(this.service, "NowBool", data);
-    return promise.then((data) => BoolValue.decode(new _m0.Reader(data)));
+    return promise.then((data) => BoolValue.decode(_m0.Reader.create(data)));
   }
 }
 
diff --git a/src/generate-services.ts b/src/generate-services.ts
index ff94dd125..73b43f572 100644
--- a/src/generate-services.ts
+++ b/src/generate-services.ts
@@ -123,10 +123,10 @@ function generateRegularRpcMethod(ctx: Context, methodDesc: MethodDescriptorProt
   const maybeAbortSignal = options.useAbortSignal ? "abortSignal || undefined," : "";
 
   let encode = code`${rawInputType}.encode(request).finish()`;
-  let decode = code`data => ${rawOutputType}.decode(new ${Reader}(data))`;
+  let decode = code`data => ${rawOutputType}.decode(${Reader}.create(data))`;
 
   // if (options.useDate && rawOutputType.toString().includes("Timestamp")) {
-  //   decode = code`data => ${utils.fromTimestamp}(${rawOutputType}.decode(new ${Reader}(data)))`;
+  //   decode = code`data => ${utils.fromTimestamp}(${rawOutputType}.decode(${Reader}.create(data)))`;
   // }
   if (methodDesc.clientStreaming) {
     if (options.useAsyncIterable) {
@@ -297,7 +297,7 @@ function generateCachingRpcMethod(
         const response = await this.rpc.request(ctx, "${maybePrefixPackage(fileDesc, serviceDesc.name)}", "${
     methodDesc.name
   }", data);
-        return ${outputType}.decode(new ${Reader}(response));
+        return ${outputType}.decode(${Reader}.create(response));
       });
       return Promise.all(responses);
     }
diff --git a/src/main.ts b/src/main.ts
index 7c4af4974..163e11378 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -935,7 +935,7 @@ function generateDecode(ctx: Context, fullName: string, messageDesc: DescriptorP
       input: ${Reader} | Uint8Array,
       length?: number,
     ): ${fullName} {
-      const reader = input instanceof ${Reader} ? input : new ${Reader}(input);
+      const reader = input instanceof ${Reader} ? input : ${Reader}.create(input);
       let end = length === undefined ? reader.len : reader.pos + length;
   `);