readableURIEncode

lib/internal/modules/esm/loader.js

@@ -6,11 +6,14 @@ require('internal/modules/cjs/loader');
 const {
  ArrayPrototypeJoin,
  ArrayPrototypeMap,
- encodeURI,
+ ArrayPrototypeReduce,
  FunctionPrototypeCall,
  JSONStringify,
  ObjectSetPrototypeOf,
+ RegExpPrototypeSymbolReplace,
  SafeWeakMap,
+ encodeURIComponent,
+ hardenRegExp,
 } = primordials;
 
 const {
@@ -520,10 +523,18 @@ function createModuleLoader(useCustomLoadersIfPresent = true) {
  const userLoaderPaths = getOptionValue('--experimental-loader');
  if (userLoaderPaths.length > 0) {
  if (!emittedLoaderFlagWarning) {
+ const readableURIEncode = (string) => ArrayPrototypeReduce(
+ [
+ [/'/g, '%27'], // We need to URL-encode the single quote as it's the delimiter for the --import flag.
+ [/%22/g, '"'], // We can decode the double quotes to improve readability.
+ [/%2F/ig, '/'], // We can decode the slashes to improve readability.
+ ],
+ (str, { 0: regex, 1: replacement }) => RegExpPrototypeSymbolReplace(hardenRegExp(regex), str, replacement),
+ encodeURIComponent(string));
  process.emitWarning(
  '`--experimental-loader` may be removed in the future; instead use `register()`:\n' +
  `--import 'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from "node:url"; ${ArrayPrototypeJoin(
- ArrayPrototypeMap(userLoaderPaths, (loader) => `register(${JSONStringify(encodeURI(loader))}, pathToFileURL("./"))`),
+ ArrayPrototypeMap(userLoaderPaths, (loader) => `register(${readableURIEncode(JSONStringify(loader))}, pathToFileURL("./"))`),
  '; ',
  )};'`,
  'ExperimentalWarning',