feat: add sourcemapIgnoreList configuration option

docs/config/server-options.md

@@ -318,3 +318,20 @@ export default defineConfig({
   },
 })
 ```
+
+## server.sourcemapIgnoreList
+
+- **Type:** `(sourcePath: string, sourcemapPath: string) => boolean`
+- **Default:** `(sourcePath) => sourcePath.includes('node_modules')`
+
+Whether or not to ignore source files in the server sourcemap, used to populate the [`x_google_ignoreList` source map extension](https://developer.chrome.com/blog/devtools-better-angular-debugging/#the-x_google_ignorelist-source-map-extension).
+
+```js
+export default defineConfig({
+  server: {
+    // This is the default value, and will add all files with node_modules in their paths
+    // to the ignore list.
+    sourcemapIgnoreList: (sourcePath, sourcemapPath) => sourcePath.includes('node_modules')
+  }
+};
+```

packages/vite/src/node/server/index.ts

@@ -115,6 +115,12 @@ export interface ServerOptions extends CommonServerOptions {
    * @default true
    */
   preTransformRequests?: boolean
+  /**
+   * Whether or not to ignore-list source files in the dev server sourcemap, used to populate
+   * the [`x_google_ignoreList` source map extension](https://developer.chrome.com/blog/devtools-better-angular-debugging/#the-x_google_ignorelist-source-map-extension).
+   * By default, it excludes all paths containing `/node_modules/`.
+   */
+  sourcemapIgnoreList?: (sourcePath: string, sourcemapPath: string) => boolean
   /**
    * Force dep pre-optimization regardless of whether deps have changed.
    *
@@ -127,6 +133,7 @@ export interface ServerOptions extends CommonServerOptions {
 export interface ResolvedServerOptions extends ServerOptions {
   fs: Required<FileSystemServeOptions>
   middlewareMode: boolean
+  sourcemapIgnoreList: NonNullable<ServerOptions['sourcemapIgnoreList']>
 }
 
 export interface FileSystemServeOptions {
@@ -746,7 +753,8 @@ export function resolveServerOptions(
 ): ResolvedServerOptions {
   const server: ResolvedServerOptions = {
     preTransformRequests: true,
-    ...(raw as ResolvedServerOptions),
+    sourcemapIgnoreList: (sourcePath) => sourcePath.includes('node_modules'),
+    ...(raw as Omit<ResolvedServerOptions, 'sourcemapIgnoreList'>),
     middlewareMode: !!raw?.middlewareMode,
   }
   let allowDirs = server.fs?.allow

packages/vite/src/node/server/transformRequest.ts

@@ -278,6 +278,23 @@ async function loadAndTransform(
     ) {
       const sourcePath = map.sources[sourcesIndex]
 
+      const sourcemapPath = `${mod.file}.map`
+      const ignoreList = config.server.sourcemapIgnoreList(
+        sourcePath,
+        sourcemapPath,
+      )
+      if (typeof ignoreList !== 'boolean') {
+        logger.warn('sourcemapIgnoreList function must return a boolean.')
+      }
+      if (ignoreList) {
+        if (map.x_google_ignoreList === undefined) {
+          map.x_google_ignoreList = []
+        }
+        if (!map.x_google_ignoreList.includes(sourcesIndex)) {
+          map.x_google_ignoreList.push(sourcesIndex)
+        }
+      }
+
       // Rewrite sources to relative paths to give debuggers the chance
       // to resolve and display them in a meaningful way (rather than
       // with absolute paths).