fix: comments

src/bson.ts

@@ -50,7 +50,7 @@ export {
   Decimal128
 };
 export { BSONValue } from './bson_value';
-export { BSONError } from './error';
+export { BSONError, BSONVersionError } from './error';
 export { BSONType } from './constants';
 export { EJSON } from './extended_json';
 

src/error.ts

@@ -43,3 +43,14 @@ export class BSONError extends Error {
     );
   }
 }
+
+/** @public */
+export class BSONVersionError extends BSONError {
+  get name(): 'BSONVersionError' {
+    return 'BSONVersionError';
+  }
+
+  constructor() {
+    super('Unsupported BSON version, bson types must be from bson 5.0 or later');
+  }
+}

src/extended_json.ts

@@ -11,7 +11,7 @@ import {
 import { DBRef, isDBRefLike } from './db_ref';
 import { Decimal128 } from './decimal128';
 import { Double } from './double';
-import { BSONError } from './error';
+import { BSONError, BSONVersionError } from './error';
 import { Int32 } from './int_32';
 import { Long } from './long';
 import { MaxKey } from './max_key';
@@ -318,7 +318,7 @@ function serializeDocument(doc: any, options: EJSONSerializeOptions) {
     typeof doc._bsontype === 'string' &&
     doc[Symbol.for('@@mdb.bson.version')] !== BSON_MAJOR_VERSION
   ) {
-    throw new BSONError('Unsupported BSON version, bson types must be from bson 5.0 or later');
+    throw new BSONVersionError();
   } else if (isBSONType(doc)) {
     // the "document" is really just a BSON type object
     // eslint-disable-next-line @typescript-eslint/no-explicit-any

src/parser/calculate_size.ts

@@ -1,6 +1,6 @@
 import { Binary } from '../binary';
 import type { Document } from '../bson';
-import { BSONError } from '../error';
+import { BSONVersionError } from '../error';
 import * as constants from '../constants';
 import { ByteUtils } from '../utils/byte_utils';
 import { isAnyArrayBuffer, isDate, isRegExp } from './utils';
@@ -83,7 +83,7 @@ function calculateElement(
         typeof value._bsontype === 'string' &&
         value[Symbol.for('@@mdb.bson.version')] !== constants.BSON_MAJOR_VERSION
       ) {
-        throw new BSONError('Unsupported BSON version, bson types must be from bson 5.0 or later');
+        throw new BSONVersionError();
       } else if (
         value == null ||
         value['_bsontype'] === 'MinKey' ||

src/parser/serializer.ts

@@ -5,7 +5,7 @@ import * as constants from '../constants';
 import type { DBRefLike } from '../db_ref';
 import type { Decimal128 } from '../decimal128';
 import type { Double } from '../double';
-import { BSONError } from '../error';
+import { BSONError, BSONVersionError } from '../error';
 import type { Int32 } from '../int_32';
 import { Long } from '../long';
 import type { MinKey } from '../min_key';
@@ -710,7 +710,7 @@ export function serializeInto(
         typeof value === 'object' &&
         value[Symbol.for('@@mdb.bson.version')] !== constants.BSON_MAJOR_VERSION
       ) {
-        throw new BSONError('Unsupported BSON version, bson types must be from bson 5.0 or later');
+        throw new BSONVersionError();
       } else if (value._bsontype === 'ObjectId') {
         index = serializeObjectId(buffer, key, value, index);
       } else if (value._bsontype === 'Decimal128') {
@@ -820,7 +820,7 @@ export function serializeInto(
         typeof value === 'object' &&
         value[Symbol.for('@@mdb.bson.version')] !== constants.BSON_MAJOR_VERSION
       ) {
-        throw new BSONError('Unsupported BSON version, bson types must be from bson 5.0 or later');
+        throw new BSONVersionError();
       } else if (value._bsontype === 'ObjectId') {
         index = serializeObjectId(buffer, key, value, index);
       } else if (type === 'object' && value._bsontype === 'Decimal128') {
@@ -930,7 +930,7 @@ export function serializeInto(
         typeof value === 'object' &&
         value[Symbol.for('@@mdb.bson.version')] !== constants.BSON_MAJOR_VERSION
       ) {
-        throw new BSONError('Unsupported BSON version, bson types must be from bson 5.0 or later');
+        throw new BSONVersionError();
       } else if (value._bsontype === 'ObjectId') {
         index = serializeObjectId(buffer, key, value, index);
       } else if (type === 'object' && value._bsontype === 'Decimal128') {

test/node/cross_compat.test.ts

@@ -64,17 +64,17 @@ const BSONTypeClasses = {
 };
 
 describe('Prevent previous major versions from working with BSON v5 serialize and stringify', function () {
-  for (const [typeName, typeMaker] of Object.entries(BSONTypeClasses)) {
+  for (const [typeName, typeFactory] of Object.entries(BSONTypeClasses)) {
     it(`serialize throws if ${typeName} is missing a version symbol`, () => {
-      const type = typeMaker();
+      const type = typeFactory();
       Object.defineProperty(type, Symbol.for('@@mdb.bson.version'), { value: null }); // set an own property that overrides the getter
       expect(() => BSON.serialize({ type })).to.throw(/Unsupported BSON version/);
       expect(() => BSON.serialize({ a: [type] })).to.throw(/Unsupported BSON version/);
       expect(() => BSON.serialize(new Map([['type', type]]))).to.throw(/Unsupported BSON version/);
     });
 
     it(`stringify throws if ${typeName} is missing a version symbol`, () => {
-      const type = typeMaker();
+      const type = typeFactory();
       Object.defineProperty(type, Symbol.for('@@mdb.bson.version'), { value: null }); // set an own property that overrides the getter
       expect(() => EJSON.stringify({ type })).to.throw(/Unsupported BSON version/);
       expect(() => EJSON.stringify({ a: [type] })).to.throw(/Unsupported BSON version/);

test/node/error.test.ts

@@ -1,7 +1,7 @@
 import { expect } from 'chai';
 import { loadESModuleBSON } from '../load_bson';
 
-import { __isWeb__, BSONError } from '../register-bson';
+import { __isWeb__, BSONError, BSONVersionError } from '../register-bson';
 
 const instanceOfChecksWork = !__isWeb__;
 
@@ -82,4 +82,14 @@ describe('BSONError', function () {
     expect(bsonErr.name).equals('BSONError');
     expect(bsonErr.message).equals('This is a BSONError message');
   });
+
+  describe('class BSONVersionError', () => {
+    it('is a BSONError instance', () => {
+      expect(BSONError.isBSONError(new BSONVersionError())).to.be.true;
+    });
+
+    it('has a name property equal to "BSONVersionError"', () => {
+      expect(new BSONVersionError()).to.have.property('name', 'BSONVersionError');
+    });
+  });
 });

test/node/exports.test.ts

@@ -8,6 +8,7 @@ const EXPECTED_EXPORTS = [
 
   'BSONType',
   'BSONValue',
+  'BSONVersionError',
   'EJSON',
   'Code',
   'BSONSymbol',