fix: resolve builtin modules correctly

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 - `[jest-resolver]` Implement the `defaultAsyncResolver` ([#15679](https://github.com/jestjs/jest/pull/15679))
 
+### Fixes
+
+- `[jest-resolver]` Resolve builtin modules correctly ([#15683](https://github.com/jestjs/jest/pull/15683))
+
 ### Chore & Maintenance
 
 - `[*]` Remove and deprecate `jest-repl` package ([#15673](https://github.com/jestjs/jest/pull/15673))

e2e/__tests__/__snapshots__/moduleNameMapper.test.ts.snap

@@ -41,7 +41,7 @@ exports[`moduleNameMapper wrong array configuration 1`] = `
       12 | module.exports = () => 'test';
       13 |
 
-      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:1129:17)
+      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:1142:17)
       at Object.require (index.js:10:1)
       at Object.require (__tests__/index.js:10:20)"
 `;
@@ -71,7 +71,7 @@ exports[`moduleNameMapper wrong configuration 1`] = `
       12 | module.exports = () => 'test';
       13 |
 
-      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:1129:17)
+      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:1142:17)
       at Object.require (index.js:10:1)
       at Object.require (__tests__/index.js:10:20)"
 `;

e2e/__tests__/__snapshots__/requireMissingExt.test.ts.snap

@@ -26,7 +26,7 @@ exports[`shows a proper error from deep requires 1`] = `
       12 | test('dummy', () => {
       13 |   expect(1).toBe(1);
 
-      at Resolver._throwModNotFoundError (../../packages/jest-resolve/build/index.js:875:11)
+      at Resolver._throwModNotFoundError (../../packages/jest-resolve/build/index.js:888:11)
       at Object.<anonymous> (node_modules/discord.js/src/index.js:21:12)
       at Object.require (__tests__/test.js:10:1)"
 `;

e2e/__tests__/__snapshots__/resolveNoFileExtensions.test.ts.snap

@@ -37,7 +37,7 @@ exports[`show error message with matching files 1`] = `
         |                  ^
       9 |
 
-      at Resolver._throwModNotFoundError (../../packages/jest-resolve/build/index.js:875:11)
+      at Resolver._throwModNotFoundError (../../packages/jest-resolve/build/index.js:888:11)
       at Object.require (index.js:8:18)
       at Object.require (__tests__/test.js:8:11)"
 `;

packages/jest-resolve/package.json

@@ -29,7 +29,8 @@
     "unrs-resolver": "^1.7.11"
   },
   "devDependencies": {
-    "@types/graceful-fs": "^4.1.9"
+    "@types/graceful-fs": "^4.1.9",
+    "url": "^0.11.4"
   },
   "engines": {
     "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"

packages/jest-resolve/src/__tests__/resolve.test.ts

@@ -84,6 +84,24 @@ describe('isCoreModule', () => {
 });
 
 describe('findNodeModule', () => {
+  it('should resolve builtin modules as-is', () => {
+    expect(
+      Resolver.findNodeModule('url', {
+        basedir: __dirname,
+      }),
+    ).toBe('url');
+    expect(
+      Resolver.findNodeModule('node:url', {
+        basedir: __dirname,
+      }),
+    ).toBe('node:url');
+    expect(
+      Resolver.findNodeModule('url/', {
+        basedir: __dirname,
+      }),
+    ).toBe(path.resolve('node_modules/url/url.js'));
+  });
+
   it('is possible to override the default resolver', () => {
     const cwd = process.cwd();
     const resolvedCwd = fs.realpathSync(cwd) || cwd;

packages/jest-resolve/src/defaultResolver.ts

@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+import {isBuiltin} from 'module';
 import {fileURLToPath} from 'url';
 import pnpResolver from 'jest-pnp-resolver';
 import {
@@ -73,6 +74,12 @@
   options: ResolverOptions,
   async?: true,
 ): string | Promise<string> {
+  // https://github.com/oxc-project/oxc-resolver/issues/565
+  // https://github.com/jestjs/jest/issues/15676
+  if (isBuiltin(path)) {
+    return path;
+  }
+
   if (process.versions.pnp && options.allowPnp !== false) {
     return pnpResolver(path, options);
   }
@@ -111,13 +118,12 @@
     unrsResolver = unrsResolver.cloneWithOptions(resolveOptions);
   } else {
     unrsResolver = new ResolverFactory(resolveOptions);
-    setResolver(unrsResolver);
   }
 
+  setResolver(unrsResolver);
+
   const finalResolver = (
-    resolve: (
-      resolver: ResolverFactory,
-    ) => ResolveResult | Promise<ResolveResult>,
+    resolve: () => ResolveResult | Promise<ResolveResult>,
   ) => {
     const resolveWithPathsFallback = (result: ResolveResult) => {
       if (!result.path && paths?.length) {
@@ -131,12 +137,13 @@
             ...resolveOptions,
             modules: paths,
           });
-          return resolve(unrsResolver);
+          setResolver(unrsResolver);
+          return resolve();
         }
       }
       return result;
     };
-    const result = resolve(unrsResolver!);
+    const result = resolve();
     if ('then' in result) {
       return result.then(resolveWithPathsFallback).then(handleResolveResult);
     }
@@ -145,8 +152,10 @@
     );
   };
 
-  return finalResolver((resolver: ResolverFactory) =>
-    async ? resolver.async(basedir, path) : resolver.sync(basedir, path),
+  return finalResolver(() =>
+    async
+      ? unrsResolver!.async(basedir, path)
+      : unrsResolver!.sync(basedir, path),
   );
 }
 

yarn.lock

@@ -13797,6 +13797,7 @@ __metadata:
     jest-validate: "workspace:*"
     slash: "npm:^3.0.0"
     unrs-resolver: "npm:^1.7.11"
+    url: "npm:^0.11.4"
   languageName: unknown
   linkType: soft
 
@@ -18400,6 +18401,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"punycode@npm:^1.4.1":
+  version: 1.4.1
+  resolution: "punycode@npm:1.4.1"
+  checksum: 10/af2700dde1a116791ff8301348ff344c47d6c224e875057237d1b5112035655fb07a6175cfdb8bf0e3a8cdfd2dc82b3a622e0aefd605566c0e949a6d0d1256a4
+  languageName: node
+  linkType: hard
+
 "punycode@npm:^2.1.0, punycode@npm:^2.3.1":
   version: 2.3.1
   resolution: "punycode@npm:2.3.1"
@@ -18432,6 +18440,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"qs@npm:^6.12.3":
+  version: 6.14.0
+  resolution: "qs@npm:6.14.0"
+  dependencies:
+    side-channel: "npm:^1.1.0"
+  checksum: 10/a60e49bbd51c935a8a4759e7505677b122e23bf392d6535b8fc31c1e447acba2c901235ecb192764013cd2781723dc1f61978b5fdd93cc31d7043d31cdc01974
+  languageName: node
+  linkType: hard
+
 "queue-microtask@npm:^1.2.2":
   version: 1.2.3
   resolution: "queue-microtask@npm:1.2.3"
@@ -21567,6 +21584,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"url@npm:^0.11.4":
+  version: 0.11.4
+  resolution: "url@npm:0.11.4"
+  dependencies:
+    punycode: "npm:^1.4.1"
+    qs: "npm:^6.12.3"
+  checksum: 10/e787d070f0756518b982a4653ef6cdf4d9030d8691eee2d483344faf2b530b71d302287fa63b292299455fea5075c502a5ad5f920cb790e95605847f957a65e4
+  languageName: node
+  linkType: hard
+
 "util-deprecate@npm:^1.0.1, util-deprecate@npm:^1.0.2, util-deprecate@npm:~1.0.1":
   version: 1.0.2
   resolution: "util-deprecate@npm:1.0.2"