Sourcemap errors in terminal by default

[eps1lon]

Requires experimental.serverSourceMaps.

When an error is logged (e.g. console.error(error)), we'll now display the stack sourcemapped and include a sourceframe. We already do this with a couple of errors but now we'll do it consistently.

For

export default function Page() {
  const error = new Error("Boom!");
  console.error(error);
  return null;
}

Node.js terminal:

Error: Boom
    at Page (webpack-internal:///(rsc)/./app/page.tsx:6:19)
    at react-stack-bottom-frame (webpack-internal:///(react-server)/./dist/compiled/react-server-dom-webpack/cjs/react-server-dom-webpack-server.edge.development.js:3558:20)
[...]

Boom
    at Page (webpack:///app/page.tsx?7603:2:16)

Node.js --inspect (no changes):

Browser (no changes):

Follow-up:

• --enable-source-maps by default whenexperimental.serverSourceMaps: true (does this cause a noticeably slower next-build?)
• replace logErrorWithOriginalStack with console.error in setup-dev-bundler
• ship experimental.serverSourceMaps (probably need to consider security. Might be easier to split into build-only server sourcemaps which is the critical part of this work or just create sourcemaps during build that we ensure are not part of the deploy)
• get rid of webpack:// prefixing via https://webpack.js.org/configuration/output/#outputdevtoolmodulefilenametemplate to that locations are clickable

[eps1lon]

• Sourcemap errors in terminal by default  #71444 👈
• Enable source maps for pnpm debug #71653
• canary

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[ijjk]

Failing test suites

Commit: 1513e5b

pnpm test test/integration/edge-runtime-module-errors/test/module-imports.test.js

• Edge runtime code with imports > Edge API statically importing node.js module > throws unsupported module error in dev at runtime and highlights the faulty line

Expand output

● Edge runtime code with imports › Edge API statically importing node.js module › throws unsupported module error in dev at runtime and highlights the faulty line

expect(received).toBe(expected) // Object.is equality

Expected: 500
Received: 404

  88 |       await retry(async () => {
  89 |         const res = await fetchViaHTTP(context.appPort, url)
> 90 |         expect(res.status).toBe(500)
     |                            ^
  91 |         const text = await res.text()
  92 |         expectUnsupportedModuleDevError(moduleName, importStatement, text)
  93 |       })

  at toBe (integration/edge-runtime-module-errors/test/module-imports.test.js:90:28)
  at retry (lib/next-test-utils.ts:806:14)
  at Object.<anonymous> (integration/edge-runtime-module-errors/test/module-imports.test.js:88:7)

Read more about building and testing Next.js in contributing.md.

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
buildDuration	18.6s	23s	⚠️ +4.4s
buildDurationCached	15.3s	13.9s	N/A
nodeModulesSize	374 MB	402 MB	⚠️ +28.6 MB
nextStartRea..uration (ms)	432ms	471ms	N/A

Client Bundles (main, webpack)

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
4172-HASH.js gzip	45.2 kB	45 kB	N/A
4265-HASH.js gzip	5.27 kB	5.26 kB	N/A
7ac8fc69-HASH.js gzip	52.6 kB	52.6 kB	N/A
9045.HASH.js gzip	169 B	169 B	✓
framework-HASH.js gzip	57.4 kB	57.4 kB	N/A
main-app-HASH.js gzip	233 B	233 B	✓
main-HASH.js gzip	33 kB	32.9 kB	N/A
webpack-HASH.js gzip	1.71 kB	1.71 kB	✓
Overall change	2.11 kB	2.11 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Overall change	39.4 kB	39.4 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
_app-HASH.js gzip	192 B	192 B	✓
_error-HASH.js gzip	192 B	191 B	N/A
amp-HASH.js gzip	506 B	512 B	N/A
css-HASH.js gzip	343 B	342 B	N/A
dynamic-HASH.js gzip	1.84 kB	1.85 kB	N/A
edge-ssr-HASH.js gzip	265 B	266 B	N/A
head-HASH.js gzip	364 B	364 B	✓
hooks-HASH.js gzip	392 B	392 B	✓
image-HASH.js gzip	4.41 kB	4.41 kB	N/A
index-HASH.js gzip	268 B	268 B	✓
link-HASH.js gzip	2.78 kB	2.78 kB	N/A
routerDirect..HASH.js gzip	327 B	327 B	✓
script-HASH.js gzip	397 B	396 B	N/A
withRouter-HASH.js gzip	321 B	324 B	N/A
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Overall change	1.65 kB	1.65 kB	✓

Client Build Manifests

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
_buildManifest.js gzip	751 B	749 B	N/A
Overall change	0 B	0 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
index.html gzip	522 B	523 B	N/A
link.html gzip	537 B	536 B	N/A
withRouter.html gzip	518 B	519 B	N/A
Overall change	0 B	0 B	✓

Edge SSR bundle Size

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
edge-ssr.js gzip	128 kB	128 kB	N/A
page.js gzip	188 kB	187 kB	N/A
Overall change	0 B	0 B	✓

Middleware size

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
middleware-b..fest.js gzip	667 B	668 B	N/A
middleware-r..fest.js gzip	155 B	156 B	N/A
middleware.js gzip	31 kB	31 kB	N/A
edge-runtime..pack.js gzip	844 B	844 B	✓
Overall change	844 B	844 B	✓

Next Runtimes Overall increase ⚠️

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
973-experime...dev.js gzip	322 B	322 B	✓
973.runtime.dev.js gzip	314 B	314 B	✓
app-page-exp...dev.js gzip	317 kB	317 kB	N/A
app-page-exp..prod.js gzip	121 kB	121 kB	N/A
app-page-tur..prod.js gzip	134 kB	134 kB	N/A
app-page-tur..prod.js gzip	129 kB	129 kB	N/A
app-page.run...dev.js gzip	308 kB	308 kB	N/A
app-page.run..prod.js gzip	117 kB	117 kB	N/A
app-route-ex...dev.js gzip	35.9 kB	35.9 kB	N/A
app-route-ex..prod.js gzip	24.4 kB	24.4 kB	N/A
app-route-tu..prod.js gzip	24.4 kB	24.4 kB	N/A
app-route-tu..prod.js gzip	24.2 kB	24.2 kB	N/A
app-route.ru...dev.js gzip	37.6 kB	37.5 kB	N/A
app-route.ru..prod.js gzip	24.2 kB	24.2 kB	N/A
pages-api-tu..prod.js gzip	9.61 kB	9.61 kB	✓
pages-api.ru...dev.js gzip	11.4 kB	11.4 kB	✓
pages-api.ru..prod.js gzip	9.61 kB	9.61 kB	✓
pages-turbo...prod.js gzip	20.9 kB	20.9 kB	✓
pages.runtim...dev.js gzip	26.5 kB	26.5 kB	✓
pages.runtim..prod.js gzip	20.9 kB	20.9 kB	✓
server.runti..prod.js gzip	58.4 kB	914 kB	⚠️ +855 kB
Overall change	158 kB	1.01 MB	⚠️ +855 kB

build cache

	vercel/next.js canary	vercel/next.js sebbie/10-17-sourcemap_terminal_errors_by_default_in_next_dev_	Change
0.pack gzip	1.85 MB	1.85 MB	N/A
index.pack gzip	143 kB	143 kB	N/A
Overall change	0 B	0 B	✓

Diff details

Diff for page.js

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Diff for middleware.js

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Diff for edge-ssr.js

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Diff for image-HASH.js

@@ -1,7 +1,7 @@
 (self["webpackChunk_N_E"] = self["webpackChunk_N_E"] || []).push([
   [8358],
   {
-    /***/ 4693: /***/ (
+    /***/ 7494: /***/ (
       __unused_webpack_module,
       __unused_webpack_exports,
       __webpack_require__
@@ -9,7 +9,7 @@
       (window.__NEXT_P = window.__NEXT_P || []).push([
         "/image",
         function () {
-          return __webpack_require__(8698);
+          return __webpack_require__(9269);
         },
       ]);
       if (false) {
@@ -18,7 +18,7 @@
       /***/
     },
 
-    /***/ 5928: /***/ (module, exports, __webpack_require__) => {
+    /***/ 245: /***/ (module, exports, __webpack_require__) => {
       "use strict";
       /* __next_internal_client_entry_do_not_use__  cjs */
       Object.defineProperty(exports, "__esModule", {
@@ -40,17 +40,17 @@
         __webpack_require__(1150)
       );
       const _head = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(2614)
+        __webpack_require__(6936)
       );
-      const _getimgprops = __webpack_require__(8958);
-      const _imageconfig = __webpack_require__(1533);
-      const _imageconfigcontextsharedruntime = __webpack_require__(2437);
-      const _warnonce = __webpack_require__(9124);
-      const _routercontextsharedruntime = __webpack_require__(5778);
+      const _getimgprops = __webpack_require__(1096);
+      const _imageconfig = __webpack_require__(8965);
+      const _imageconfigcontextsharedruntime = __webpack_require__(5280);
+      const _warnonce = __webpack_require__(857);
+      const _routercontextsharedruntime = __webpack_require__(9684);
       const _imageloader = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(406)
+        __webpack_require__(2448)
       );
-      const _usemergedref = __webpack_require__(9782);
+      const _usemergedref = __webpack_require__(5493);
       // This is replaced by webpack define plugin
       const configEnv = {
         deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
@@ -371,7 +371,7 @@
       /***/
     },
 
-    /***/ 9782: /***/ (module, exports, __webpack_require__) => {
+    /***/ 5493: /***/ (module, exports, __webpack_require__) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -432,7 +432,7 @@
       /***/
     },
 
-    /***/ 8958: /***/ (
+    /***/ 1096: /***/ (
       __unused_webpack_module,
       exports,
       __webpack_require__
@@ -448,9 +448,9 @@
           return getImgProps;
         },
       });
-      const _warnonce = __webpack_require__(9124);
-      const _imageblursvg = __webpack_require__(9846);
-      const _imageconfig = __webpack_require__(1533);
+      const _warnonce = __webpack_require__(857);
+      const _imageblursvg = __webpack_require__(5681);
+      const _imageconfig = __webpack_require__(8965);
       const VALID_LOADING_VALUES =
         /* unused pure expression or super */ null && [
           "lazy",
@@ -824,7 +824,7 @@
       /***/
     },
 
-    /***/ 9846: /***/ (__unused_webpack_module, exports) => {
+    /***/ 5681: /***/ (__unused_webpack_module, exports) => {
       "use strict";
       /**
        * A shared function, used on both client and server, to generate a SVG blur placeholder.
@@ -879,7 +879,7 @@
       /***/
     },
 
-    /***/ 4951: /***/ (
+    /***/ 7398: /***/ (
       __unused_webpack_module,
       exports,
       __webpack_require__
@@ -906,10 +906,10 @@
         },
       });
       const _interop_require_default = __webpack_require__(9608);
-      const _getimgprops = __webpack_require__(8958);
-      const _imagecomponent = __webpack_require__(5928);
+      const _getimgprops = __webpack_require__(1096);
+      const _imagecomponent = __webpack_require__(245);
       const _imageloader = /*#__PURE__*/ _interop_require_default._(
-        __webpack_require__(406)
+        __webpack_require__(2448)
       );
       function getImageProps(imgProps) {
         const { props } = (0, _getimgprops.getImgProps)(imgProps, {
@@ -941,7 +941,7 @@
       /***/
     },
 
-    /***/ 406: /***/ (__unused_webpack_module, exports) => {
+    /***/ 2448: /***/ (__unused_webpack_module, exports) => {
       "use strict";
 
       Object.defineProperty(exports, "__esModule", {
@@ -976,7 +976,7 @@
       /***/
     },
 
-    /***/ 8698: /***/ (
+    /***/ 9269: /***/ (
       __unused_webpack_module,
       __webpack_exports__,
       __webpack_require__
@@ -993,8 +993,8 @@
 
       // EXTERNAL MODULE: ./node_modules/.pnpm/react@19.0.0-rc-28668d39-20241023/node_modules/react/jsx-runtime.js
       var jsx_runtime = __webpack_require__(1882);
-      // EXTERNAL MODULE: ./node_modules/.pnpm/next@file+..+main-repo+packages+next+next-packed.tgz_react-dom@19.0.0-rc-28668d39-20241023_re_wbsj4g46sbkzmyvf32u2ztx36m/node_modules/next/image.js
-      var next_image = __webpack_require__(477);
+      // EXTERNAL MODULE: ./node_modules/.pnpm/next@file+..+diff-repo+packages+next+next-packed.tgz_react-dom@19.0.0-rc-28668d39-20241023_re_ygc4u4zbyids6gylg2elop7bza/node_modules/next/image.js
+      var next_image = __webpack_require__(8797);
       var image_default = /*#__PURE__*/ __webpack_require__.n(next_image); // CONCATENATED MODULE: ./pages/nextjs.png
       /* harmony default export */ const nextjs = {
         src: "/_next/static/media/nextjs.cae0b805.png",
@@ -1024,12 +1024,12 @@
       /***/
     },
 
-    /***/ 477: /***/ (
+    /***/ 8797: /***/ (
       module,
       __unused_webpack_exports,
       __webpack_require__
     ) => {
-      module.exports = __webpack_require__(4951);
+      module.exports = __webpack_require__(7398);
 
       /***/
     },
@@ -1039,7 +1039,7 @@
     /******/ var __webpack_exec__ = (moduleId) =>
       __webpack_require__((__webpack_require__.s = moduleId));
     /******/ __webpack_require__.O(0, [2888, 9774, 179], () =>
-      __webpack_exec__(4693)
+      __webpack_exec__(7494)
     );
     /******/ var __webpack_exports__ = __webpack_require__.O();
     /******/ _N_E = __webpack_exports__;

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Commit: 1513e5b

[eps1lon]

Should probably just merge this into debug?

[eps1lon]

Seemingly unnecessary indirection but I went back and forth when to patch and if the patch needs arguments. Keeping the indirection for development for now.

[eps1lon]

Also for me to test how this works in our Edge sandbox.

[eps1lon]

Move these to a more appropriate place. These modules are not used on the Client.

[eps1lon]

Should this just go through ignore listing? Mainly because I think we want an option to disable ignore listing in the terminal in case you encounter Next.js/React bugs.

[eps1lon]

I think we wouldn't respect the max depth, if we'd just forward all options. Haven't tested though.

[eps1lon]

This is an older version of source-map that's still sync (mozilla/source-map#331). Consider moving to https://www.npmjs.com/package/@cspotcode/source-map-consumer

[eps1lon]

Also test with Bun.

[eps1lon]

With this change:

Error: In Route "/blog/[slug]" this component accessed data without a fallback UI available somewhere above it using Suspense.
    at E (webpack:///src/client/components/layout-router.tsx:324:3)
    at c (webpack:///src/client/components/redirect-boundary.tsx:48:5)
    at l (webpack:///src/client/components/redirect-boundary.tsx:78:34)
    at l (webpack:///src/client/components/not-found-boundary.tsx:119:3)
    at O (webpack:///src/client/components/layout-router.tsx:466:3)
    at ErrorBoundary (webpack:///src/client/components/error-boundary.tsx:190:3)
    at P (webpack:///src/client/components/layout-router.tsx:289:3)
    at S (webpack:///src/client/components/layout-router.tsx:299:9)
    at RenderFromTemplateContext (webpack:///src/client/components/render-from-template-context.tsx:8:10)
    at R (webpack:///src/client/components/layout-router.tsx:514:9)
    at E (webpack:///src/client/components/layout-router.tsx:324:3)
    at c (webpack:///src/client/components/redirect-boundary.tsx:48:5)
    at l (webpack:///src/client/components/redirect-boundary.tsx:78:34)
    at l (webpack:///src/client/components/not-found-boundary.tsx:119:3)
    at O (webpack:///src/client/components/layout-router.tsx:466:3)
    at ErrorBoundary (webpack:///src/client/components/error-boundary.tsx:190:3)
    at P (webpack:///src/client/components/layout-router.tsx:289:3)
    at S (webpack:///src/client/components/layout-router.tsx:299:9)
    at RenderFromTemplateContext (webpack:///src/client/components/render-from-template-context.tsx:8:10)
    at R (webpack:///src/client/components/layout-router.tsx:514:9)
    at E (webpack:///src/client/components/layout-router.tsx:324:3)
    at c (webpack:///src/client/components/redirect-boundary.tsx:48:5)
    at l (webpack:///src/client/components/redirect-boundary.tsx:78:34)
    at c (webpack:///src/client/components/not-found-boundary.tsx:33:5)
    at l (webpack:///src/client/components/not-found-boundary.tsx:119:3)
    at O (webpack:///src/client/components/layout-router.tsx:466:3)
    at ErrorBoundary (webpack:///src/client/components/error-boundary.tsx:190:3)
    at P (webpack:///src/client/components/layout-router.tsx:289:3)
    at S (webpack:///src/client/components/layout-router.tsx:299:9)
    at RenderFromTemplateContext (webpack:///src/client/components/render-from-template-context.tsx:8:10)
    at R (webpack:///src/client/components/layout-router.tsx:514:9)
    at body (<anonymous>)
    at html (<anonymous>)
    at constructor (webpack://next/dist/src/client/components/redirect-boundary.tsx?07a0:48:5)
    at splitInterceptingRoute (webpack://next/dist/src/client/components/redirect-boundary.tsx?07a0:79:9)
    at splitInterceptingRoute (webpack://next/dist/src/client/components/app-router.tsx?b068:215:9)
    at constructor (webpack://next/dist/src/client/components/error-boundary.tsx?ce04:69:11)
    at errorComponent (webpack://next/dist/src/client/components/error-boundary.tsx?ce04:190:3)
    at actionQueue (webpack://next/dist/src/client/components/app-router.tsx?b068:632:3)
    at ServerInsertedHTMLProvider (webpack://next/dist/src/server/app-render/server-inserted-html.tsx?7790:14:34)
    at splitInterceptingRoute (webpack://next/dist/src/server/app-render/app-render.tsx?93c3:836:3)

Follow-up:

• remove webpack:// prefix
• Find out why names are not sourcemapped and still minified
• no useful component stack. I would've expected the component that accessed the data to show up here?

[eps1lon]

See https://github.com/facebook/react/pull/31335/files#diff-70c5c902594b3429ac10277268cb7babdeed105542e047782a9913faa0bc4a9eR717-R719

[eps1lon]

Manually verified the logs match a local next-start: https://vercel.com/vtest314-next-e2e-tests/vtest314-e2e-tests/833nSnKnDeLkcGUNgNRxfWP2nKzW/logs?slug=app-future&slug=en-US&slug=vtest314-next-e2e-tests&slug=vtest314-e2e-tests&slug=833nSnKnDeLkcGUNgNRxfWP2nKzW&slug=logs&page=1&timeline=past30Minutes&startDate=1729759798740&endDate=1729761598740&selectedLogId=1729761435556143555671100000&selectedLogTimestamp=1729761435556&forceEndDate=1729761435557

[eps1lon]

Flaky test. Merging anyway.

[eps1lon]

Need to revert since source-map uses Math.random for quick-sort which triggers warnings with experimental.dynamicIO: #71868