fratercula/falco

JavaScript Runner

Falco

JavaScript Runner. run and build codes with zero configuration

Install

$ npm i @fratercula/falco

# CLI
$ npm i @fratercula/falco -g

Usage

const falco = require('@fratercula/falco')

const options = {
  entry: 'path/to/build/index.js',
  npm: {
    registry: 'https://registry.npm.taobao.org',
  },
  externals: {
    // ...
  },
  template: path.join(process.cwd(), 'index.html'),
  port: 8000,
  mode: 'development',
}

;(async () => {
  try {
    const {
      codes,
      dependencies,
      template,
      mode,
      server,
    } = await falco(options)
  } catch (e) {
    console.log(e)
  }
})()

Callback Parameters

• codes: webpack build codes, sourceMaps
• dependencies: build codes dependencies modules
• template: output html
• mode: development or production
• server: webpack dev server, only in development mode

Files Trees

const { trees } = require('@fratercula/falco')

trees('path/to/entry/index.js')
/*
[
  {
    path: 'index.js',
    content: 'import React from \'react\'\nimport \'reset-css/less/reset.less\'\nimport \'./index.less\'\n\nexport default function () {\n  return (\n    <div>component</div>\n  )\n}\n',
  },
  {
    path: 'components/index.js',
    content: '...',
  }
  ...
]
*/

CLI

$ falco -p 2222 -d -c -m main.js -t template.html -o lib

Arguments

• -v: show version
• -d: set development mode
• -p: webpack dev server port, for development only, default is 2222
• -m: webpack entry path, default is index.js
• -c: use config falco.config.js
• -t: use template, default is index.html
• -o: set output path, default is dist
• --eslint: for vscode only, export vscode eslint.nodePath config. built in eslint-config-airbnb, babel-eslint
• --clean: clean temp files and node mudules

falco.config.js example:

module.exports = {
  mode: 'development',
  output: {
    filename: 'index.[hash:8].js',
    library: 'Yy',
    libraryTarget: 'umd',
    libraryExport: 'default',
  },
  report: true,
  debug: true,
  targets: {
    ie: '8',
  },
}

Options

Property	description	Type	Default
entry	webpack entry, required	string | array | object	-
externals	webpack externals	array	[]
packages	set packages version	object	{}
template	html template	string	-
tmpDir	temp files directory	string	os.tmpDir()
npm	npm options	object	{}
output	webpack output option	object	{}
debug	babel loader debug option	boolean	false
loaders	add webpack loaders, you should install the loader plugin locally	array	[]
sourceMap	enable sourceMap	boolean	true
targets	browserlist targets	object | array | string	{}
report	enable webpack-bundle-analyzer	boolean	false
injectScript	inject scripts into template	boolean	true
env	set NODE_ENV	string	-
contentBase	webpack contentBase option	string	os.tmpDir()
context	webpack context option	string	-

Options Example

entry

// path
{
  entry: '/path/to/your/codes/directory/index.js',
}

// array
{
  entry: ['path/to/js0', 'path/to/js1'],
}

// object
{
  entry: {
    index: 'path/to/index',
    home: ['path/to/home'],
  }
}

externals

{
  // note the order in sequence
  externals: [
    {
      name: 'react', // package name
      root: 'React', // window.React
      commonjs2: 'react',
      commonjs: 'react',
      amd: 'react',
      urls: 'https://unpkg.com/react@16.7.0/umd/react.production.min.js', // umd url
    },
    {
      name: 'react-dom',
      root: 'ReactDOM',
      urls: 'https://unpkg.com/react-dom@16.7.0/umd/react-dom.production.min.js',
    },
    {
      // use `https://unpkg.com/axios`
      name: 'axios',
      root: 'axios',
    },
    {
      name: 'antd',
      root: 'antd',
      // `moment` is `antd` dependency
      urls: ['https://unpkg.com/moment@2.24.0/min/moment.min.js', 'https://unpkg.com/antd@3.13.0/dist/antd-with-locales.min.js'],
    },
  ],
}

packages

packages list here will be installed, ignore externals

{
  packages: {
    react: '^13.5.9',
  },
}

template

{
  template: 'path/to/html',
}

tmpDir

{
  tmpDir: path.join(__dirname, 'temp'),
}

npm

cannot set no-package-lock and prefix

// default
{
  npm: {
    'no-audit': true,
    production: true,
  },
}

// example
{
  npm: {
    registry: 'https://registry.npm.taobao.org',
    'prefer-offline': true,
    disturl: 'https://npm.taobao.org/dist',
    // ...
  },
}

output

cannot set path

{
  output: {
    filename: 'index.[hash:8].js',
    library: 'someLibName',
    libraryTarget: 'umd',
  }
}

debug

only for production mode

{
  debug: true,
}

loaders

{
  loaders: [
    {
      test: /\.(png|jpg|gif)$/i,
      use: [
        {
          loader: 'url-loader',
          options: {
            limit: 8192,
          },
        },
      ],
    },
  ],
}

sourceMap

{
  sourceMap: false, // always `true` in `development` mode
}

targets

only for production mode

{
  targets: { ios: 10 },
}

report

only for production mode

{
  report: true,
}

injectScript

{
  injectScript: false,
}

env

{
  env: 'development',
}

Default Config

• Loaders
  • babel-loader
  • style-loader
  • css-loader
  • less-loader
  • svg-inline-loader
• Template DOM: <div id="root"></div>
• Output directory: dist
• Output files
  • index.js
  • index.js.map
  • index.html
• Externals umd url: https://unpkg.com/${packageName}
• CSS modules: [name].module.css

License

MIT

Relevance

Falco peregrinus