read envs

packages/next/src/build/entries.ts

@@ -406,7 +406,7 @@ export function getEdgeServerEntry(opts: {
     absoluteDocumentPath: opts.pages['/_document'],
     absoluteErrorPath: opts.pages['/_error'],
     absolutePagePath: opts.absolutePagePath,
-    buildId: opts.buildId,
+    buildId: 'process.env.__NEXT_BUILD_ID', // opts.buildId,
     dev: opts.isDev,
     isServerComponent: opts.isServerComponent,
     page: opts.page,

packages/next/src/build/templates/edge-ssr-app.ts

@@ -78,7 +78,7 @@ const render = getRender({
   serverActions: isServerComponent ? serverActions : undefined,
   subresourceIntegrityManifest,
   config: nextConfig,
-  buildId: process.env.__NEXT_BUILD_ID || 'VAR_BUILD_ID',
+  buildId: process.env.__NEXT_BUILD_ID!,
   nextFontManifest,
   incrementalCacheHandler,
   interceptionRouteRewrites,

packages/next/src/build/templates/edge-ssr.ts

@@ -104,7 +104,7 @@ const render = getRender({
   reactLoadableManifest,
   subresourceIntegrityManifest,
   config: nextConfig,
-  buildId: process.env.__NEXT_BUILD_ID || 'VAR_BUILD_ID',
+  buildId: process.env.__NEXT_BUILD_ID!,
   nextFontManifest,
   incrementalCacheHandler,
 })

packages/next/src/build/webpack/loaders/next-edge-ssr-loader/index.ts

@@ -145,7 +145,7 @@ const edgeSSRLoader: webpack.LoaderDefinitionFunction<EdgeSSRLoaderQuery> =
         {
           VAR_USERLAND: pageModPath,
           VAR_PAGE: page,
-          VAR_BUILD_ID: buildId,
+          // VAR_BUILD_ID: buildId,
         },
         {
           sriEnabled: JSON.stringify(sriEnabled),
@@ -167,7 +167,7 @@ const edgeSSRLoader: webpack.LoaderDefinitionFunction<EdgeSSRLoaderQuery> =
         {
           VAR_USERLAND: pageModPath,
           VAR_PAGE: page,
-          VAR_BUILD_ID: buildId,
+          // VAR_BUILD_ID: buildId,
           VAR_MODULE_DOCUMENT: documentPath,
           VAR_MODULE_APP: appPath,
           VAR_MODULE_GLOBAL_ERROR: errorPath,

packages/next/src/build/webpack/plugins/middleware-plugin.ts

@@ -42,10 +42,10 @@ export interface EdgeFunctionDefinition {
   name: string
   page: string
   matchers: MiddlewareMatcher[]
+  environments: Record<string, string>
   wasm?: AssetBinding[]
   assets?: AssetBinding[]
   regions?: string[] | string
-  environments?: Record<string, string>
 }
 
 export interface MiddlewareManifest {

packages/next/src/server/next-server.ts

@@ -1431,6 +1431,7 @@ export default class NextNodeServer extends BaseServer<
     name: string
     paths: string[]
     wasm: { filePath: string; name: string }[]
+    environments: { [key: string]: string }
     assets?: { filePath: string; name: string }[]
   } | null {
     const manifest = this.getMiddlewareManifest()
@@ -1472,6 +1473,7 @@ export default class NextNodeServer extends BaseServer<
             filePath: join(this.distDir, binding.filePath),
           }
         }),
+      environments: pageInfo.environments,
     }
   }
 

packages/next/src/server/web/sandbox/context.ts

@@ -107,9 +107,14 @@ async function loadWasm(
   return modules
 }
 
-function buildEnvironmentVariablesFrom(): Record<string, string | undefined> {
+function buildEnvironmentVariablesFrom(
+  injectedEnvironments: Record<string, string>
+): Record<string, string | undefined> {
   const pairs = Object.keys(process.env).map((key) => [key, process.env[key]])
   const env = Object.fromEntries(pairs)
+  for (const key of Object.keys(injectedEnvironments)) {
+    env[key] = injectedEnvironments[key]
+  }
   env.NEXT_RUNTIME = 'edge'
   return env
 }
@@ -122,23 +127,24 @@ Learn more: https://nextjs.org/docs/api-reference/edge-runtime`)
   throw error
 }
 
-function createProcessPolyfill() {
-  const processPolyfill = { env: buildEnvironmentVariablesFrom() }
-  const overridenValue: Record<string, any> = {}
+function createProcessPolyfill(environments: Record<string, string>) {
+  const processPolyfill = { env: buildEnvironmentVariablesFrom(environments) }
+  const overriddenValue: Record<string, any> = {}
+
   for (const key of Object.keys(process)) {
     if (key === 'env') continue
     Object.defineProperty(processPolyfill, key, {
       get() {
-        if (overridenValue[key] !== undefined) {
-          return overridenValue[key]
+        if (overriddenValue[key] !== undefined) {
+          return overriddenValue[key]
         }
         if (typeof (process as any)[key] === 'function') {
           return () => throwUnsupportedAPIError(`process.${key}`)
         }
         return undefined
       },
       set(value) {
-        overridenValue[key] = value
+        overriddenValue[key] = value
       },
       enumerable: false,
     })
@@ -244,14 +250,15 @@ export const requestStore = new AsyncLocalStorage<{
 async function createModuleContext(options: ModuleContextOptions) {
   const warnedEvals = new Set<string>()
   const warnedWasmCodegens = new Set<string>()
-  const wasm = await loadWasm(options.edgeFunctionEntry.wasm ?? [])
+  const { edgeFunctionEntry } = options
+  const wasm = await loadWasm(edgeFunctionEntry.wasm ?? [])
   const runtime = new EdgeRuntime({
     codeGeneration:
       process.env.NODE_ENV !== 'production'
         ? { strings: true, wasm: true }
         : undefined,
     extend: (context) => {
-      context.process = createProcessPolyfill()
+      context.process = createProcessPolyfill(edgeFunctionEntry.environments)
 
       Object.defineProperty(context, 'require', {
         enumerable: false,
@@ -470,7 +477,10 @@ interface ModuleContextOptions {
   onWarning: (warn: Error) => void
   useCache: boolean
   distDir: string
-  edgeFunctionEntry: Pick<EdgeFunctionDefinition, 'assets' | 'wasm'>
+  edgeFunctionEntry: Pick<
+    EdgeFunctionDefinition,
+    'assets' | 'wasm' | 'environments'
+  >
 }
 
 function getModuleContextShared(options: ModuleContextOptions) {