mooeypoo/dom-word-replacer

/**
 * Babel Starter Kit (https://www.kriasoft.com/babel-starter-kit)
 *
 * Copyright © 2015-2016 Kriasoft, LLC. All rights reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE.txt file in the root directory of this source tree.
 */

'use strict';

const fs = require('fs');
const del = require('del');
const rollup = require('rollup');
const babel = require('rollup-plugin-babel');
const resolve = require('rollup-plugin-node-resolve');
const commonjs = require('rollup-plugin-commonjs');
const pkg = require('../package.json');

let promise = Promise.resolve();

// Clean up the output directory
promise = promise.then(() => del(['dist/*']));

// Compile source code into a distributable format with Babel
['es', 'cjs', 'umd'].forEach(format => {
  promise = promise.then(() => rollup.rollup({
    input: 'src/index.js',
    external: Object.keys(pkg.dependencies),
    plugins: [
      resolve(),
      babel(Object.assign(pkg.babel, {
        babelrc: false,
        exclude: 'node_modules/**',
        externalHelpers: false,
        runtimeHelpers: true,
        presets: pkg.babel.presets.map(x => (x === 'latest' ? ['latest', { es2015: { modules: false } }] : x))
      })),
      commonjs()
    ]
  })).then(bundle => bundle.write({
    file: `dist/${format === 'cjs' ? 'index' : `index.${format}`}.js`,
    format,
    sourceMap: true,
    name: format === 'umd' ? pkg.name : undefined
  }));
});

// Copy package.json and LICENSE.txt
promise = promise.then(() => {
  delete pkg.private;
  delete pkg.devDependencies;
  delete pkg.scripts;
  delete pkg.eslintConfig;
  delete pkg.babel;
  fs.writeFileSync('dist/package.json', JSON.stringify(pkg, null, '  '), 'utf-8');
  fs.writeFileSync('dist/LICENSE', fs.readFileSync('LICENSE', 'utf-8'), 'utf-8');
});

promise.catch(err => console.error(err.stack));