spinjs/src/plugins/ES6Plugin.ts

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import requireModule from '../requireModule';
import { ConfigPlugin } from '../ConfigPlugin';
import { Builder } from '../Builder';
import Spin from '../Spin';
import JSRuleFinder from './shared/JSRuleFinder';

export default class ES6Plugin implements ConfigPlugin {
    configure(builder: Builder, spin: Spin) {
        if (builder.stack.hasAll(['es6', 'webpack'])) {
            if (builder.stack.hasAny('es6') && !builder.stack.hasAny('dll')) {
                builder.config = spin.merge({
                    entry: {
                        index: [requireModule.resolve('babel-polyfill')],
                    },
                }, builder.config);
            }

            const jsRuleFinder = new JSRuleFinder(builder);
            const jsRule = jsRuleFinder.rule;
            jsRule.exclude = /node_modules/;
            jsRule.use = {
                loader: requireModule.resolve('babel-loader'),
                options: {
                    cacheDirectory: spin.dev,
                    presets: [
                        requireModule.resolve('babel-preset-react'),
                        [requireModule.resolve('babel-preset-es2015'), {'modules': false}],
                        requireModule.resolve('babel-preset-stage-0')],
                    plugins: [
                        requireModule.resolve('babel-plugin-transform-runtime'),
                        requireModule.resolve('babel-plugin-transform-decorators-legacy'),
                        requireModule.resolve('babel-plugin-transform-class-properties'),
                    ],
                    only: jsRuleFinder.extensions.map(ext => '*.' + ext),
                },
            };
        }
    }
}