fix: Allow searching for tests in node_modules

CHANGELOG.md

@@ -56,6 +56,7 @@
 - `[jest-worker]` Do not swallow errors during serialization ([#10984](https://github.com/facebook/jest/pull/10984))
 - `[pretty-format]` [**BREAKING**] Convert to ES Modules ([#10515](https://github.com/facebook/jest/pull/10515))
 - `[pretty-format]` Only call `hasAttribute` if it's a function ([#11000](https://github.com/facebook/jest/pull/11000))
+- `[jest-config]` Allow searching for tests in node_modules by exposing `retainAllFiles` ([#11084](https://github.com/facebook/jest/pull/11084))
 
 ### Chore & Maintenance
 

docs/Configuration.md

@@ -499,6 +499,8 @@ type HasteConfig = {
   platforms?: Array<string>;
   // Whether to throw on error on module collision.
   throwOnModuleCollision?: boolean;
+  // Whether to search for tests in node_modules.
+  retainAllFiles?: boolean;
 };
 ```
 

packages/jest-config/src/ValidConfig.ts

@@ -57,6 +57,7 @@ const initialOptions: Config.InitialOptions = {
     defaultPlatform: 'ios',
     hasteImplModulePath: '<rootDir>/haste_impl.js',
     platforms: ['ios', 'android'],
+    retainAllFiles: false,
     throwOnModuleCollision: false,
   },
   injectGlobals: true,

packages/jest-haste-map/src/types.ts

@@ -19,6 +19,7 @@ export type WorkerMessage = {
   rootDir: string;
   filePath: string;
   hasteImplModulePath?: string;
+  retainAllFiles?: boolean;
 };
 
 export type WorkerMetadata = {

packages/jest-types/src/Config.ts

@@ -28,6 +28,8 @@ export type HasteConfig = {
   platforms?: Array<string>;
   /** Whether to throw on error on module collision. */
   throwOnModuleCollision?: boolean;
+  /** Whether to search for tests in node_modules. */
+  retainAllFiles?: boolean;
 };
 
 export type CoverageReporterName = keyof ReportOptions;