Rewire `babel-loader` loader in your `create-react-app` project using `craco`.

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2401.0.46 months ago5 years agoMinified + gzip package size for craco-babel-loader in KB


This is a port of react-app-rewire-babel-loader to CRACO instead of react-app-rewired. react-app-rewired was not being updated for version 2 of CRA, and I wanted to use the rewired babel loader with a solution designed for CRA 2.
Rewire babel-loader loader in your create-react-app project using CRACO.

Say there is an awesome library you found on npm that you want to use within your un-ejected create-react-app project, but unfortunately, it's published in ES6+ (since node_modules doesn't go through babel-loader), so you cannot really use it. It's also effective for working with monorepos which was my original use case.
However, with CRACO and this library, craco-babel-loader, you can use that awesome library you've found.
See below for usage.


$ yarn add craco-babel-loader
# npm v5+
$ npm install craco-babel-loader
# before npm v5
$ npm install --save craco-babel-loader


// crago.config.js
// see:

const path = require("path");
const fs = require("fs");

const rewireBabelLoader = require("craco-babel-loader");

// helpers

const appDirectory = fs.realpathSync(process.cwd());
const resolveApp = relativePath => path.resolve(appDirectory, relativePath);

module.exports = {
  plugins: [
        //This is a craco plugin:
        { plugin: rewireBabelLoader, 
          options: { 
            includes: [resolveApp("node_modules/isemail")], //put things you want to include in array here
            excludes: [/(node_modules|bower_components)/] //things you want to exclude here
            //you can omit include or exclude if you only want to use one option
  • node.js and npm. See:
  • yarn. See:
  • npm dependencies. Run: yarn install


  • Lint: yarn run lint
  • Prettier: yarn run pretty
  • Test: yarn run test
  • Pre-publish: yarn run prepublish
  • Build: yarn run build