prepare_web-components.js

const fs = require('fs-extra');
const concat = require('concat');

const build = async () => {
  const files = [
    'tmp/web-components/main.js',
    'tmp/web-components/polyfills.js',
    'tmp/web-components/runtime.js',
  ];

  await fs.ensureDir('dist/libs/web-components');
  await concat(files, 'dist/libs/web-components/web-components.js');
  await fs.copyFile(
    'apps/web-components/package.json',
    'dist/libs/web-components/package.json'
  );
  await fs.copyFile(
    'tmp/web-components/3rdpartylicenses.txt',
    'dist/libs/web-components/3rdpartylicenses.txt'
  );
  await fs.copyFile(
    'apps/web-components/README.md',
    'dist/libs/web-components/README.md'
  );
  await fs.copyFile(
    'apps/web-components/LICENSE.txt',
    'dist/libs/web-components/LICENSE.txt'
  );

  const license = await fs.readFile(
      'dist/libs/web-components/LICENSE.txt',
      'utf-8'
  );

  const thirdPartyLicenses = await fs.readFile(
    'tmp/web-components/3rdpartylicenses.txt',
    'utf-8'
  );
  let jsCode = await fs.readFile(
    'dist/libs/web-components/web-components.js',
    'utf-8'
  );
  jsCode = `/*
  ${license}
  */
  ${jsCode}

/* Third party licenses:
${thirdPartyLicenses}
*/
`;
  await fs.writeFile('dist/libs/web-components/web-components.js', jsCode, {
    encoding: 'utf-8',
  });

  console.log('Web-Components Build OK');
};

build();