reenable tests on workers

Author: dygabo

test/es-module/test-esm-loader-mock.mjs

@@ -1,11 +1,6 @@
-import { skipIfWorker } from '../common/index.mjs';
+import '../common/index.mjs';
 import assert from 'node:assert/strict';
 import { mock } from '../fixtures/es-module-loaders/mock.mjs';
-// Importing mock.mjs above will call `register` to modify the loaders chain.
-// Modifying the loader chain is not supported currently when running from a worker thread.
-// Relevant PR: https://github.com/nodejs/node/pull/52706
-// See comment: https://github.com/nodejs/node/pull/52706/files#r1585144580
-skipIfWorker();
 
 mock('node:events', {
   EventEmitter: 'This is mocked!'

test/es-module/test-esm-named-exports.js

@@ -1,8 +1,7 @@
 // Flags: --import ./test/fixtures/es-module-loaders/builtin-named-exports.mjs
 'use strict';
 
-const common = require('../common');
-common.skipIfWorker();
+require('../common');
 
 const { readFile, __fromLoader } = require('fs');
 const assert = require('assert');

test/es-module/test-esm-named-exports.mjs

@@ -1,10 +1,9 @@
 // Flags: --import ./test/fixtures/es-module-loaders/builtin-named-exports.mjs
-import { skipIfWorker } from '../common/index.mjs';
-import * as fs from 'fs';
+import '../common/index.mjs';
+import { readFile, __fromLoader } from 'fs';
 import assert from 'assert';
 import ok from '../fixtures/es-modules/test-esm-ok.mjs';
-skipIfWorker();
 
 assert(ok);
-assert(fs.readFile);
-assert(fs.__fromLoader);
+assert(readFile);
+assert(__fromLoader);

test/fixtures/es-module-loaders/builtin-named-exports.mjs

@@ -1,4 +1,3 @@
-import { isMainThread } from '../../common/index.mjs';
 import * as fixtures from '../../common/fixtures.mjs';
 import { createRequire, register } from 'node:module';
 
@@ -11,10 +10,8 @@ Object.defineProperty(globalThis, GET_BUILTIN, {
   configurable: false,
 });
 
-if (isMainThread) {
-  register(fixtures.fileURL('es-module-loaders/builtin-named-exports-loader.mjs'), {
-    data: {
-      GET_BUILTIN,
-    },
-  });
-}
+register(fixtures.fileURL('es-module-loaders/builtin-named-exports-loader.mjs'), {
+  data: {
+    GET_BUILTIN,
+  },
+});