rename GulpFile, add workaround for __dirname usage in esm

resolves: #12137

Gulpfile.js → Gulpfile.mjs

@@ -1,24 +1,26 @@
 "use strict";
 
-const plumber = require("gulp-plumber");
-const through = require("through2");
-const chalk = require("chalk");
-const newer = require("gulp-newer");
-const babel = require("gulp-babel");
-const fancyLog = require("fancy-log");
-const filter = require("gulp-filter");
-const gulp = require("gulp");
-const path = require("path");
-const rollup = require("rollup");
-const rollupBabel = require("@rollup/plugin-babel").default;
-const rollupBabelSource = require("./scripts/rollup-plugin-babel-source");
-const rollupCommonJs = require("@rollup/plugin-commonjs");
-const rollupJson = require("@rollup/plugin-json");
-const rollupNodePolyfills = require("rollup-plugin-node-polyfills");
-const rollupNodeResolve = require("@rollup/plugin-node-resolve").default;
-const rollupReplace = require("@rollup/plugin-replace");
-const { terser: rollupTerser } = require("rollup-plugin-terser");
-
+import plumber from "gulp-plumber";
+import through from "through2";
+import chalk from "chalk";
+import newer from "gulp-newer";
+import babel from "gulp-babel";
+import fancyLog from "fancy-log";
+import filter from "gulp-filter";
+import gulp from "gulp";
+import path from "path";
+import { rollup } from "rollup";
+import { fileURLToPath } from "url";
+import pluginBabel from "@rollup/plugin-babel";
+import rollupBabelSource from "./scripts/rollup-plugin-babel-source.js";
+import rollupCommonJs from "@rollup/plugin-commonjs";
+import rollupJson from "@rollup/plugin-json";
+import rollupNodePolyfills from "rollup-plugin-node-polyfills";
+import { default as rollupNodeResolve } from "@rollup/plugin-node-resolve";
+import rollupReplace from "@rollup/plugin-replace";
+import { terser as rollupTerser } from "rollup-plugin-terser";
+
+const rollupBabel = pluginBabel.default;
 const defaultSourcesGlob = "./@(codemods|packages|eslint)/*/src/**/*.js";
 
 function swapSrcWithLib(srcPath) {
@@ -54,6 +56,8 @@ function rename(fn) {
 }
 
 function buildBabel(exclude, sourcesGlob = defaultSourcesGlob) {
+  const __filename = fileURLToPath(import.meta.url);
+  const __dirname = path.dirname(__filename);
   const base = __dirname;
 
   let stream = gulp.src(sourcesGlob, { base: __dirname });
@@ -91,11 +95,12 @@ if (process.env.CIRCLE_PR_NUMBER) {
   versionSuffix = "+pr." + process.env.CIRCLE_PR_NUMBER;
 }
 
-const babelVersion =
-  require("./packages/babel-core/package.json").version + versionSuffix;
-function buildRollup(packages) {
+const babelVersionNumber = await import("./packages/babel-core/package.json")
+  .version;
+const babelVersion = babelVersionNumber + versionSuffix;
+async function buildRollup(packages) {
   const sourcemap = process.env.NODE_ENV === "production";
-  return Promise.all(
+  return await Promise.all(
     packages.map(async ({ src, format, dest, name, filename, version }) => {
       let nodeResolveBrowser = false,
         babelEnvName = "rollup";
@@ -107,7 +112,7 @@ function buildRollup(packages) {
       }
       const input = getIndexFromPackage(src);
       fancyLog(`Compiling '${chalk.cyan(input)}' with rollup ...`);
-      const bundle = await rollup.rollup({
+      const bundle = await rollup({
         input,
         plugins: [
           rollupBabelSource(),
@@ -185,12 +190,14 @@ function buildRollup(packages) {
   );
 }
 
+const babelParserVersionNumber = await import("./packages/babel-parser/package")
+  .version;
 const libBundles = [
   {
     src: "packages/babel-parser",
     format: "cjs",
     dest: "lib",
-    version: require("./packages/babel-parser/package").version + versionSuffix,
+    version: babelParserVersionNumber + versionSuffix,
   },
 ];
 

package.json

@@ -3,6 +3,7 @@
   "version": "7.12.4",
   "private": true,
   "license": "MIT",
+  "type": "module",
   "scripts": {
     "bootstrap": "make bootstrap",
     "codesandbox:build": "make build-no-bundle",
@@ -95,4 +96,4 @@
       "built": false
     }
   }
-}
+}

scripts/rollup-plugin-babel-source.js

@@ -1,5 +1,8 @@
 import path from "path";
 import fs from "fs";
+import { fileURLToPath } from "url";
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
 const dirname = path.join(__dirname, "..");
 
 const BABEL_SRC_REGEXP =