build-browser.js

/* eslint import/no-extraneous-dependencies: 0 */
import fs from 'fs';
import { rollup } from 'rollup';
import babel from 'rollup-plugin-babel';
import babelPresetEnv from '@babel/preset-env';
import pkg from './package.json';

rollup({
  entry: 'src/index.js',
  plugins: [
    babel({
      presets: [[babelPresetEnv, { modules: false }]],
      babelrc: false,
    }),
  ],
}).then(bundle => (
  bundle.write({
    dest: 'validator.js',
    format: 'umd',
    moduleName: pkg.name,
    banner: (
      `/*!\n${
        String(fs.readFileSync('./LICENSE'))
          .trim()
          .split('\n')
          .map(l => ` * ${l}`)
          .join('\n')
      }\n */`
    ),
  })
)).catch((e) => {
  process.stderr.write(`${e.message}\n`);
  process.exit(1);
});