esnext-scripts/etc/babel.config.js

Opinionated ESNext application scripts and configurations

module.exports = {
  presets: [
    [
      '@babel/preset-env',
      {
        corejs: 3,
        useBuiltIns: 'usage',
        modules: 'commonjs',
        targets: {
          node: 'current',
        },
      },
    ],
    '@babel/preset-react',
  ],
  plugins: [
    // @babel/preset-stage-1: A formal proposal for the feature.
    '@babel/plugin-proposal-export-default-from',
    '@babel/plugin-proposal-logical-assignment-operators',
    ['@babel/plugin-proposal-optional-chaining', { loose: false }],
    ['@babel/plugin-proposal-pipeline-operator', { proposal: 'minimal' }],
    ['@babel/plugin-proposal-nullish-coalescing-operator', { loose: false }],
    '@babel/plugin-proposal-do-expressions',
    // @babel/preset-stage-2: draft for the eventual specification.
    ['@babel/plugin-proposal-decorators', { legacy: true }],
    '@babel/plugin-proposal-function-sent',
    '@babel/plugin-proposal-export-namespace-from',
    '@babel/plugin-proposal-numeric-separator',
    '@babel/plugin-proposal-throw-expressions',
    // @babel/preset-stage-3: candidate proposal for final implementations.
    '@babel/plugin-syntax-dynamic-import',
    '@babel/plugin-syntax-import-meta',
    ['@babel/plugin-proposal-class-properties', { loose: true }],
    '@babel/plugin-proposal-json-strings',
  ],
};