worker: remove file extension check

doc/api/errors.md

@@ -2510,12 +2510,6 @@ nor a relative path starting with `./` or `../`.
 
 All attempts at serializing an uncaught exception from a worker thread failed.
 
-<a id="ERR_WORKER_UNSUPPORTED_EXTENSION"></a>
-### `ERR_WORKER_UNSUPPORTED_EXTENSION`
-
-The pathname used for the main script of a worker has an
-unknown file extension.
-
 <a id="ERR_WORKER_UNSUPPORTED_OPERATION"></a>
 ### `ERR_WORKER_UNSUPPORTED_OPERATION`
 
@@ -2842,6 +2836,16 @@ Used when a given value is out of the accepted range.
 
 The module must be successfully linked before instantiation.
 
+<a id="ERR_WORKER_UNSUPPORTED_EXTENSION"></a>
+### `ERR_WORKER_UNSUPPORTED_EXTENSION`
+<!-- YAML
+added: v11.0.0
+removed: REPLACEME
+-->
+
+The pathname used for the main script of a worker has an
+unknown file extension.
+
 <a id="ERR_ZLIB_BINDING_CLOSED"></a>
 ### `ERR_ZLIB_BINDING_CLOSED`
 <!-- YAML

lib/internal/errors.js

@@ -1617,9 +1617,6 @@ E('ERR_WORKER_PATH', (filename) =>
   TypeError);
 E('ERR_WORKER_UNSERIALIZABLE_ERROR',
   'Serializing an uncaught exception failed', Error);
-E('ERR_WORKER_UNSUPPORTED_EXTENSION',
-  'The worker script extension must be ".js", ".mjs", or ".cjs". Received "%s"',
-  TypeError);
 E('ERR_WORKER_UNSUPPORTED_OPERATION',
   '%s is not supported in workers', TypeError);
 E('ERR_ZLIB_INITIALIZATION_FAILED', 'Initialization failed', Error);

lib/internal/worker.js

@@ -35,7 +35,6 @@ const {
   ERR_WORKER_NOT_RUNNING,
   ERR_WORKER_PATH,
   ERR_WORKER_UNSERIALIZABLE_ERROR,
-  ERR_WORKER_UNSUPPORTED_EXTENSION,
   ERR_WORKER_INVALID_EXEC_ARGV,
   ERR_INVALID_ARG_TYPE,
   ERR_INVALID_ARG_VALUE,
@@ -167,11 +166,6 @@ class Worker extends EventEmitter {
       } else {
         throw new ERR_WORKER_PATH(filename);
       }
-
-      const ext = path.extname(filename);
-      if (ext !== '.js' && ext !== '.mjs' && ext !== '.cjs') {
-        throw new ERR_WORKER_UNSUPPORTED_EXTENSION(ext);
-      }
     }
 
     let env;

test/parallel/test-worker-load-file-with-extension-other-than-js.js

@@ -0,0 +1,9 @@
+'use strict';
+const common = require('../common');
+const fixtures = require('../common/fixtures');
+
+const { Worker } = require('worker_threads');
+
+(common.mustCall(() => {
+  new Worker(fixtures.path('worker-script.ts'));
+}))();

test/parallel/test-worker-unsupported-path.js

@@ -5,17 +5,6 @@ const path = require('path');
 const assert = require('assert');
 const { Worker } = require('worker_threads');
 
-{
-  const expectedErr = {
-    code: 'ERR_WORKER_UNSUPPORTED_EXTENSION',
-    name: 'TypeError'
-  };
-  assert.throws(() => { new Worker('/b'); }, expectedErr);
-  assert.throws(() => { new Worker('/c.wasm'); }, expectedErr);
-  assert.throws(() => { new Worker('/d.txt'); }, expectedErr);
-  assert.throws(() => { new Worker(new URL('file:///C:/e.wasm')); }, expectedErr);
-}
-
 {
   const expectedErr = {
     code: 'ERR_WORKER_PATH',