pixboost-js/release.js at master · Pixboost/pixboost-js · GitHub

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'use strict';

const UglifyJS = require('uglify-js');
const fs = require('fs');
const rimraf = require('rimraf');

const version = require('./package.json').version;
const src = fs.readFileSync(`${__dirname}/pixboost.js`).toString('utf-8');
const lozadSrc = fs.readFileSync(`${__dirname}/vendor/lozad.min.js`).toString('utf-8');
const picturefillSrc = fs.readFileSync(`${__dirname}/vendor/picturefill.js`).toString('utf-8');
const matchMediaSrc = fs.readFileSync(`${__dirname}/vendor/matchMedia.min.js`).toString('utf-8');

const uglify = (code, sourceMapFilename) => {
  const minified = UglifyJS.minify(code, {
    sourceMap: {
      filename: sourceMapFilename,
      url: `${sourceMapFilename}.map`
    },
    output: {
      comments: 'some'
    }
  });
  if (minified.error) {
    console.error(`Couldn't minify code: ${minified.error}`);
    process.exit(1);
  }

  return minified;
};

const code = {
  'pixboost.js': `/* @preserve ${version} */\n${src}`
};

const minified = uglify(code, 'pixboost.js');
const minifiedWithVersion = uglify(code, `pixboost-${version}.js`);

const bundleCode = {
  'picturefill.js': picturefillSrc,
  'lozad.js': lozadSrc,
  'matchMedia.js': matchMediaSrc,
  'pixboost.js': `/* @preserve ${version} */\n${src}`,
};
const bundleMinified = uglify(bundleCode, 'pixboost.bundle.js');
const bundleMinifiedWithVersion = uglify(bundleCode, `pixboost-${version}.bundle.js`);

const distDir = `${__dirname}/dist`;
if (fs.existsSync(distDir)) {
  rimraf.sync(distDir);
}

fs.mkdirSync(distDir);

fs.writeFileSync(`${distDir}/pixboost.js`, code['pixboost.js']);
fs.writeFileSync(`${distDir}/pixboost.min.js`, minified.code);
fs.writeFileSync(`${distDir}/pixboost.js.map`, minified.map);

fs.writeFileSync(`${distDir}/pixboost-${version}.js`, code['pixboost.js']);
fs.writeFileSync(`${distDir}/pixboost-${version}.min.js`, minifiedWithVersion.code);
fs.writeFileSync(`${distDir}/pixboost-${version}.js.map`, minifiedWithVersion.map);

fs.writeFileSync(`${distDir}/pixboost.bundle.min.js`, bundleMinified.code);
fs.writeFileSync(`${distDir}/pixboost.bundle.js.map`, bundleMinified.map);

fs.writeFileSync(`${distDir}/pixboost-${version}.bundle.min.js`, bundleMinifiedWithVersion.code);
fs.writeFileSync(`${distDir}/pixboost-${version}.bundle.js.map`, bundleMinifiedWithVersion.map);

fs.copyFileSync(`${__dirname}/vendor/intersection-observer.min.js`, `${distDir}/intersection-observer.min.js`);
fs.copyFileSync(`${__dirname}/vendor/lozad.min.js`, `${distDir}/lozad.min.js`);
fs.copyFileSync(`${__dirname}/vendor/lozad.js`, `${distDir}/lozad.js`);
fs.copyFileSync(`${__dirname}/vendor/picturefill.min.js`, `${distDir}/picturefill.min.js`);
fs.copyFileSync(`${__dirname}/vendor/picturefill.js`, `${distDir}/picturefill.js`);
fs.copyFileSync(`${__dirname}/vendor/matchMedia.min.js`, `${distDir}/matchMedia.min.js`);
fs.copyFileSync(`${__dirname}/vendor/matchMedia.js`, `${distDir}/matchMedia.js`);