test: add test

yarnpkg · Aug 22, 2023 · e19fd0c · e19fd0c
1 parent fc85365
commit e19fd0c
Showing 1 changed file with 28 additions and 0 deletions.
diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/pnp-esm.test.ts b/packages/acceptance-tests/pkg-tests-specs/sources/pnp-esm.test.ts
@@ -1004,4 +1004,32 @@ describe(`Plug'n'Play - ESM`, () => {
       ),
     );
   });
+
+  it(
+    `should use the commonjs resolver in commonjs files imported from ESM`,
+    makeTemporaryEnv(
+      {
+        type: `module`,
+      },
+      async ({ path, run, source }) => {
+        await xfs.writeFilePromise(ppath.join(path, `foo.js`), `import './bar.cjs';`);
+        await xfs.writeFilePromise(
+          ppath.join(path, `bar.cjs`),
+          `
+          require('module')._extensions['.custom'] = require('module')._extensions['.js'];
+          require('./baz');
+          `
+        );
+        await xfs.writeFilePromise(ppath.join(path, `baz.custom`), `console.log(42);`);
+
+        await expect(run(`install`)).resolves.toMatchObject({ code: 0 });
+
+        await expect(run(`node`, `./foo.js`)).resolves.toMatchObject({
+          code: 0,
+          stdout: `42\n`,
+          stderr: '',
+        });
+      }
+    )
+  );
 });