npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

babel-preset-meridian

v1.0.0

Published

Shared babel configuration for Meridian projects.

Downloads

5

Readme

Build Status

babel-preset-meridian

Shared babel configuration for Meridian projects.

example .babelrc config file

Install

If you run babel over your webpack config:

$ npm i -D babel-preset-meridian@git+ssh://[email protected]/joefraley/babel-preset-meridian.git

If you DON'T run babel over your webpack config:

$ npm i -D babel-preset-meridian@git+ssh://[email protected]/joefraley/babel-preset-meridian.git#legacy

Use

NOTE: This config won't work without Webpack 2

// package.json
{
  "devDependencies": {
    "babel-preset-meridian": "git+https://github.com/joefraley/babel-preset-meridian.git",
    "webpack": "2.2.0"
  }
}
// .babelrc
{
  "presets": ["meridian"]
}

That's it!

The only relevant file is index.js. It contains comments explaining each of the needed presets and plugins. It exports a babel configuration containing all the following:

Presets

[babel-preset-latest, { es2015: {modules: false} }]

See https://twitter.com/joseph_fraley/status/832688588445749249

{ es2015: {modules: false} } allows Webpack 2 to conduct treeshaking, but it means that babel will not understand ESModules without Webpack's help.

// index.js
import { debounce } from 'lodash'
// webpack will only include debounce and throw the rest of lodash away during compilation.

// webpack.config.js
import Webpack from 'webpack' // <--- doesn't work, because webpack itself handles imports now
const Webpack = require('webpack') // <--- you just gotta do this in files not compiled by webpack that you expect babel to read, for example when using babel-node node_modules/.bin/webpack

babel-preset-react

See https://www.npmjs.com/package/babel-preset-react

Makes JSX possible and includes some other junk that Facebook likes (like flow-strip-types).

import React from 'react'
const Button = () => <button />

Plugins

babel-plugin-transform-async-to-generator & babel-plugin-transform-runtime

See https://babeljs.io/docs/plugins/syntax-async-functions/#top

Both needed for async/await functions

babel-plugin-transform-decorators-legacy

See https://babeljs.io/docs/plugins/transform-decorators/

Eventually Babel will incorporate this into babel-preset-latest and it won't be needed. Just waiting on the final decorators spec.

import autobind from 'autobind'
import React from 'react'
@autobind // <--------
class Button extends React.Component {...}

babel-plugin-transform-class-properties

See https://babeljs.io/docs/plugins/transform-class-properties/

class Button extends React.Component {
  static propTypes = {...} // <---
}

babel-plugin-transform-object-rest-spread

See https://babeljs.io/docs/plugins/transform-object-rest-spread/

const props = {a:1, b:2, c:3}
<Button {...props} /> // Button.props === {a:1, b:2, c:3}

babel-plugin-syntax-dynamic-import

See https://webpack.js.org/guides/code-splitting-import/#dynamic-import

Makes webpacks lazy-load syntax possible. Used for code-splitting through react-router or something like that.

import('react').then(({ Component }) => {
  class Button extends Component {...}
})

babel-plugin-transform-do-expressions

See https://babeljs.io/docs/plugins/transform-do-expressions/

Makes this possible:

const Component = props =>
  <div className='myComponent'>
    {do {
      if(color === 'blue') { <BlueComponent/>; }
      else if(color === 'red') { <RedComponent/>; }
      else if(color === 'green') { <GreenComponent/>; }
    }}
  </div>