Avoid using CJS globals in internal source files (#12963)

* Lint against CJS globals in modules

* Use `import.meta.url` instead of `__filename` in `src` files

* Prepare fixtures runner for `import.meta.url`

* Use `import.meta.url` instead of `__filename` in `test/index` files

* Remove `__dirname` from remaining test files

dirname

* Avoid using `module` in `src` files

* Avoid using `require` in `src` files

* Avoid using `require` in `test` files

* Update `@types/node`

* Compile dynamic import in `@babel/node`

* Fix windows

* Use `@babel/plugin-proposal-dynamic-import` from npm

packages/babel-cli/src/babel/util.js

@@ -4,6 +4,7 @@ import readdirRecursive from "fs-readdir-recursive";
 import * as babel from "@babel/core";
 import path from "path";
 import fs from "fs";
+import { createRequire } from "module";
 
 export function chmod(src: string, dest: string): void {
   try {
@@ -119,6 +120,9 @@ process.on("uncaughtException", function (err) {
 });
 
 export function requireChokidar(): Object {
+  // $FlowIgnore - https://github.com/facebook/flow/issues/6913#issuecomment-662787504
+  const require = createRequire(import /*::("")*/.meta.url);
+
   try {
     // todo(babel 8): revert `@nicolo-ribaudo/chokidar-2` hack
     return parseInt(process.versions.node) >= 8