add: option to run esm from runner and config file

bin/testcafe-with-v8-flag-filter.js

@@ -5,14 +5,16 @@
 const path          = require('path');
 const url           = require('url');
 const v8FlagsFilter = require('@devexpress/bin-v8-flags-filter');
+const semver        = require('semver');
 
 const ESM_OPTION = '--esm';
 
 const forcedArgs = [];
 
 if (process.argv.slice(2).includes(ESM_OPTION)) {
     forcedArgs.push('--no-warnings');
-    forcedArgs.push(`--experimental-loader=${url.pathToFileURL(path.join(__dirname, '../lib/compiler/esm-loader.js')).href}`);
+    if (!semver.satisfies(process.version, '18.19.0 - 18.x || >=20.8.0'))
+        forcedArgs.push(`--experimental-loader=${url.pathToFileURL(path.join(__dirname, '../lib/compiler/esm-loader.js')).href}`);
 }
 
 v8FlagsFilter(path.join(__dirname, '../lib/cli'), {

src/compiler/test-file/api-based.js

@@ -24,6 +24,10 @@ import addExportAPI from './add-export-api';
 import url from 'url';
 import PREVENT_MODULE_CACHING_SUFFIX from '../prevent-module-caching-suffix';
 
+const { register }      = require('node:module');
+const { pathToFileURL } = require('node:url');
+const semver            = require('semver');
+
 
 const CWD = process.cwd();
 
@@ -66,6 +70,9 @@ export default class APIBasedTestFileCompilerBase extends TestFileCompilerBase {
 
     async _execAsModule (code, filename) {
         if (this.esm) {
+            if (semver.satisfies(process.version, '18.19.0 - 18.x || >=20.8.0'))
+                register('../esm-loader.js', pathToFileURL(__filename));
+
             const fileUrl = url.pathToFileURL(filename);
 
             //NOTE: It is necessary to prevent module caching during live mode.

ts-defs-src/runner-api/options.d.ts

@@ -270,6 +270,10 @@ interface RunOptions {
      * Disables native automation of Chromium-based browsers. Use this option to speed up browser automation and increase test stability.
      */
     disableNativeAutomation: boolean;
+     /**
+     * Allows you to import modules that do not support CommonJS.
+     */
+    esm: boolean;
 }
 
 interface StartOptions {