[dev-overlay] Only warn once per invalid sourcemap

.prettierignore

@@ -48,6 +48,7 @@ bench/nested-deps/components/**/*
 **/.tina/__generated__/**
 test/lib/amp-validator-wasm.js
 test/production/pages-dir/production/fixture/amp-validator-wasm.js
+test/e2e/app-dir/server-source-maps/fixtures/default/app/bad-sourcemap/page.js
 test/e2e/app-dir/server-source-maps/fixtures/default/internal-pkg/ignored.js
 test/e2e/app-dir/server-source-maps/fixtures/default/internal-pkg/sourcemapped.js
 test/e2e/app-dir/server-source-maps/fixtures/default/external-pkg/sourcemapped.js

packages/next/src/server/patch-error-inspect.ts

@@ -57,7 +57,7 @@ interface IgnoreableStackFrame extends StackFrame {
 
 type SourceMapCache = Map<
   string,
-  { map: SyncSourceMapConsumer; payload: ModernSourceMapPayload }
+  null | { map: SyncSourceMapConsumer; payload: ModernSourceMapPayload }
 >
 
 function frameToString(frame: StackFrame): string {
@@ -208,6 +208,9 @@ function getSourcemappedFrameIfPossible(
       console.error(
         `${sourceURL}: Invalid source map. Only conformant source maps can be used to find the original code. Cause: ${cause}`
       )
+      // If loading fails once, it'll fail every time.
+      // So set the cache to avoid duplicate errors.
+      sourceMapCache.set(frame.file, null)
       // Don't even fall back to the bundler because it might be not as strict
       // with regards to parsing and then we fail later once we consume the
       // source map payload.
@@ -235,12 +238,20 @@ function getSourcemappedFrameIfPossible(
       console.error(
         `${sourceURL}: Invalid source map. Only conformant source maps can be used to find the original code. Cause: ${cause}`
       )
+      // If creating the consumer fails once, it'll fail every time.
+      // So set the cache to avoid duplicate errors.
+      sourceMapCache.set(frame.file, null)
       return createUnsourcemappedFrame(frame)
     }
     sourceMapCache.set(frame.file, {
       map: sourceMapConsumer,
       payload: sourceMapPayload,
     })
+  } else if (sourceMapCacheEntry === null) {
+    // We failed earlier getting the payload or consumer.
+    // Just return an unsourcemapped frame.
+    // Errors will already be logged.
+    return createUnsourcemappedFrame(frame)
   } else {
     sourceMapConsumer = sourceMapCacheEntry.map
     sourceMapPayload = sourceMapCacheEntry.payload

test/e2e/app-dir/server-source-maps/fixtures/default/bad-sourcemap/page.js

@@ -4,8 +4,12 @@
 
 import { connection } from 'next/server'
 
+function logError() {
+  console.error(new Error('Boom!'))
+}
+
 export default async function Page() {
   await connection()
-  console.error(new Error('Boom!'))
+  logError()
   return <p>Hello, Dave!</p>
 }

test/e2e/app-dir/server-source-maps/server-source-maps.test.ts

@@ -270,7 +270,8 @@ describe('app-dir - server source maps', () => {
           // Node.js is fine with invalid URLs in index maps apparently.
           '' +
             '\nError: Boom!' +
-            '\n    at Page (custom://[badhost]/app/bad-sourcemap/page.js:9:15)' +
+            '\n    at logError (custom://[badhost]/app/bad-sourcemap/page.js:8:16)' +
+            '\n    at Page (custom://[badhost]/app/bad-sourcemap/page.js:13:2)' +
             // TODO: Remove blank line
             '\n'
         )
@@ -282,8 +283,15 @@ describe('app-dir - server source maps', () => {
           '' +
             `\nwebpack-internal:///(rsc)/./app/bad-sourcemap/page.js: Invalid source map. Only conformant source maps can be used to find the original code. Cause: TypeError [ERR_INVALID_ARG_TYPE]: The "payload" argument must be of type object. Received null` +
             '\nError: Boom!' +
-            '\n    at Page (webpack-internal:///(rsc)/./app/bad-sourcemap/page.js:15:19)'
+            '\n    at logError (webpack-internal:///(rsc)/./app/bad-sourcemap/page.js:14:19)' +
+            '\n    at Page (webpack-internal:///(rsc)/./app/bad-sourcemap/page.js:18:5)'
         )
+        // Expect the invalid sourcemap warning only once.
+        expect(
+          normalizeCliOutput(next.cliOutput.slice(outputIndex)).split(
+            'Invalid source map.'
+          ).length - 1
+        ).toEqual(1)
       }
     } else {
       // TODO: test `next start` with `--enable-source-maps`