rolldown-old / old-rolldown Goto Github PK

Modern bundler built on Rollup with couple more features, such as multiple entry points, presets, better configuration experience and more.

License: MIT License

JavaScript 100.00%

rollup bundler modern es2015 es2015-modules modules es6

old-rolldown's Introduction

rolldown

Modern bundler built on rollup with support for presets and better configuration experience

You might also be interested in always-done.

Install
Usage
API
Related
Contributing
Building docs
Running tests
Author
License

(TOC generated by verb using markdown-toc)

Install

Install with npm

$ npm install rolldown --save

or install using yarn

$ yarn add rolldown

Usage

For more use-cases see the tests

const rolldown = require('rolldown')

API

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Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
Please read the contributing guidelines for advice on opening issues, pull requests, and coding standards.
If you need some help and can spent some cash, feel free to contact me at CodeMentor.io too.

In short: If you want to contribute to that project, please follow these things

Please DO NOT edit README.md, CHANGELOG.md and .verb.md files. See "Building docs" section.
Ensure anything is okey by installing the dependencies and run the tests. See "Running tests" section.
Always use npm run commit to commit changes instead of git commit, because it is interactive and user-friendly. It uses commitizen behind the scenes, which follows Conventional Changelog idealogy.
Do NOT bump the version in package.json. For that we use npm run release, which is standard-version and follows Conventional Changelog idealogy.

Thanks a lot! :)

Building docs

Documentation and that readme is generated using verb-generate-readme, which is a verb generator, so you need to install both of them and then run verb command like that

$ npm install verbose/verb#dev verb-generate-readme --global && verb

Please don't edit the README directly. Any changes to the readme must be made in .verb.md.

Running tests

Clone repository and run the following in that cloned directory

$ npm install && npm test

Author

Charlike Mike Reagent

License

This file was generated by verb-generate-readme, v0.2.3, on January 03, 2017.
Project scaffolded using charlike cli.

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old-rolldown's Issues

support multiple entry points

Easy to implement? If opts.entry is object loop over it.

more API

rolldown.transform = (source, options) => {
  if (!source) {
    // or something like that
    // (need more strict check for that param)
    return Promise.reject(new TypeError('expect a string'))
  }

  return utils.tmpFile(source).then((file) => {
    options.entry = file.path
    delete options['source']

    // we don't want to (force to not) write to disk
    // but resolve `{ code, map }` object
    delete options['targets']
    delete options['dest']

    return rolldown(options)
  })
}

rolldown.plugin = (plugin, options) => {
  rolldown.plugins.push([plugin, options])
  return rolldown
}

// usage

// { name: 'my-awesome-plugin', transform: (code, id) => {} }
rolldown.plugin(Object)

 // e.g. buble
rolldown.plugin(Function)

// e.g. buble, { target: { node: '4' } }
rolldown.plugin(Function, Object)

// e.g. 'buble'
rolldown.plugin(String)

// e.g. 'buble', { target: { node: '4' } }
rolldown.plugin(String, Object)

rolldown.transform('some source code', {
  plugins: [
    'commonjs',
    ['node-resolve', { jsnext: true }],
    ['buble', { target: { node: '4' } }]
  ]
}).then(({ code, map }) => {})

rolldown 2019

const fs = require('fs');
const path = require('path');
const rollup = require('rollup');
const argParser = require('mri');
const commonjs = require('rollup-plugin-commonjs');
const progress = require('rollup-plugin-progress');
const filesize = require('rollup-plugin-filesize');
const resolve = require('rollup-plugin-node-resolve');
const terser = require('rollup-plugin-terser');
const babel = require('rollup-plugin-babel');
const json = require('rollup-plugin-json');
const builtinModules = require('builtin-modules');

function prettierPlugin() {
  return {
    name: 'rollup-plugin-prettier-bundle',
    generateBundle(output) {},
  };
}

async function createConfig(input, options) {
  const opts = Object.assign({}, options);
  const extMap = {
    es: '.mjs',
    cjs: '.js',
  };
  const destMap = {
    es: 'module',
    cjs: 'main',
  };

  const cwd = process.cwd();
  const outDir = (x) => opts.outDir || path.join(cwd, 'dist', destMap[x]);
  const outFile = (x) => path.join(outDir(x), `index${extMap[x]}`);

  const join = (...x) => path.join(cwd, ...x);

  const pkg = require(join('package.json'));

  const exts = arrayify(opts.extensions);
  const extensions =
    exts.length > 0 ? exts : ['.js', '.jsx', '.mjs', '.ts', '.tsx'];

  const possibleInputs = [
    input,
    join('index.js'),
    join('src', 'index.js'),
    join('src', 'index.mjs'),
    join('src', 'index.ts'),
  ];

  // first existing, for now
  const [inputFile] = possibleInputs.filter((x) => fs.existsSync(x));
  const license = `/** Released under the ${opts.license ||
    pkg.license} License. See LICENSE file. */`;

  const outMap = {
    cjs: {
      exports: 'named',
      banner: license,
      file: outFile('cjs'),
      format: 'cjs',
      preferConst: true,

      // don't break oldschool/classic/normal node.js
      outro: 'module.exports = exports.default || exports;',
    },
    es: {
      exports: 'named',
      banner: license,
      file: outFile('es'),
      format: 'es',
      preferConst: true,
    },
  };
  outMap.esm = outMap.es;

  let formats = arrayify(opts.format)
    .reduce((acc, x) => acc.concat(x.indexOf(',') > -1 ? x.split(',') : x), [])
    .filter(Boolean);

  let output = null;

  if (formats.length === 0) {
    formats = ['cjs', 'es'];
  }
  if (formats.length === 1) {
    output = outMap[formats[0]];
  } else {
    output = formats.map((x) => outMap[x]);
  }

  return {
    input: inputFile,
    output,

    external: builtinModules,

    inlineDynamicImports: true,
    experimentalTopLevelAwait: true,

    plugins: [
      progress(),
      resolve({
        preferBuiltins: true,
        module: true,
        jsnext: true,
        main: true,
      }),
      json({ preferConst: true }),
      babel({
        exclude: 'node_modules/**',
        externalHelpers: true,
        extensions,
      }),
      commonjs({
        extensions,
      }),
      opts.minify && terser.terser(),
      filesize({
        showBrotliSize: true,
        showGzippedSize: true,
        showMinifiedSize: true,
      }),
    ],
  };
}

const argv = argParser(process.argv.slice(2), {
  alias: {
    i: 'input',
    d: ['out-dir', 'outdir', 'outDir'],
    f: 'format',
    m: 'minify',
    x: ['ext', 'extensions'],
    l: ['license'],
  },
});

let ROLLUP_CACHE = null;

createConfig(argv.input || argv._[0], argv)
  .then(async (cfg) => {
    const bundle = await rollup.rollup(
      Object.assign({}, cfg, { cache: ROLLUP_CACHE }),
    );

    ROLLUP_CACHE = bundle.cache;

    arrayify(cfg.output).map(async (outputOptions) => {
      await bundle.write(outputOptions);
    });
  })
  .catch(console.error);

function arrayify(val) {
  if (!val) return [];
  if (Array.isArray(val)) return val;
  return [val];
}

run with

node rolldown.js [src/index.js]

by defaults tries index.js, src/index.js, src/index.mjs and src/index.ts, works with TypeScript out of the box and generates CJS and ESM bundles with bundled deps.