EddiG/babel-js-config.md

Last active April 20, 2021 06:49

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Use Babel configuration from JS file

Raw

Was taken from https://github.com/kentcdodds/testing-workshop/tree/master/other/configuration/calculator.solution

package.json

{
  "babel": {
    "presets": "./.babelrc.js"
  }
}

.babelrc.js

const isTest = String(process.env.NODE_ENV) === 'test'

module.exports = {
  presets: [['env', {modules: isTest ? 'commonjs' : false}], 'react'],
  plugins: [
    'syntax-dynamic-import',
    'transform-class-properties',
    'transform-object-rest-spread',
    isTest ? 'dynamic-import-node' : null,
  ].filter(Boolean),
}