chore: improve error on module not found (#9963)

CHANGELOG.md

@@ -12,6 +12,7 @@
 - `[jest-circus]` [**BREAKING**] Fail tests if a test takes a done callback and have return values ([#9129](https://github.com/facebook/jest/pull/9129))
 - `[jest-circus]` [**BREAKING**] Throw a proper error if a test / hook is defined asynchronously ([#8096](https://github.com/facebook/jest/pull/8096))
 - `[jest-config, jest-resolve]` [**BREAKING**] Remove support for `browser` field ([#9943](https://github.com/facebook/jest/pull/9943))
+- `[jest-resolve]` Show relative path from root dir for `module not found` errors ([#9963](https://github.com/facebook/jest/pull/9963))
 
 ### Chore & Maintenance
 

e2e/__tests__/stackTrace.test.ts

@@ -78,7 +78,7 @@ describe('Stack Trace', () => {
 
     // Make sure we show Jest's jest-resolve as part of the stack trace
     expect(stderr).toMatch(
-      /Cannot find module 'this-module-does-not-exist' from 'testError.test\.js'/,
+      /Cannot find module 'this-module-does-not-exist' from '__tests__\/testError\.test\.js'/,
     );
 
     expect(stderr).toMatch(

e2e/resolve/__tests__/resolve.test.js

@@ -121,7 +121,7 @@ test('should throw module not found error if the module cannot be found', () =>
   expect(() => require('Test8')).toThrow(
     expect.objectContaining({
       code: 'MODULE_NOT_FOUND',
-      message: "Cannot find module 'Test8' from 'resolve.test.js'",
+      message: "Cannot find module 'Test8' from '__tests__/resolve.test.js'",
     }),
   );
 });

packages/jest-resolve/src/index.ts

@@ -236,10 +236,10 @@ class Resolver {
     // 5. Throw an error if the module could not be found. `resolve.sync` only
     // produces an error based on the dirname but we have the actual current
     // module name available.
-    const relativePath = path.relative(dirname, from);
+    const relativePath = path.relative(this._options.rootDir, from) || '.';
 
     throw new ModuleNotFoundError(
-      `Cannot find module '${moduleName}' from '${relativePath || '.'}'`,
+      `Cannot find module '${moduleName}' from '${relativePath}'`,
       moduleName,
     );
   }