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6to5ify

6to5 browserify plugin

Installation

$ npm install --save-dev 6to5ify

Usage

CLI

$ browserify script.js -t 6to5ify --outfile bundle.js

Node

var fs = require("fs");
var browserify = require("browserify");
var to5ify = require("6to5ify");
browserify({ debug: true })
  .transform(to5ify)
  .require("./script.js", { entry: true })
  .bundle()
  .on("error", function (err) { console.log("Error : " + err.message); })
  .pipe(fs.createWriteStream("bundle.js"));

Options

browserify().transform(to5ify.configure({
  blacklist: ["generators"]
}))

$ browserify -d -e script.js -t [ 6to5ify --blacklist generators ]

Enable Experimental Transforms

By default 6to5's experimental transforms are disabled. You can turn them on by passing experimental as a configuration option.

browserify().transform(to5ify.configure({
  experimental: true
}))

$ browserify -d -e script.js -t [ 6to5ify --experimental ]

Customising extensions

By default all files with the extensions .js, .es, '.es6 and .jsx are compiled. You can change this by passing an array of extensions.

NOTE: This will override the default ones so if you want to use any of them you have to add them back.

browserify().transform(to5ify.configure({
  extensions: [".6to5"]
}))

$ browserify -d -e script.js -t [ 6to5ify --extensions .6to5 ]

Relative source maps

Browserify passes an absolute path so there's no way to determine what folder it's relative to. You can pass a relative path that'll be removed from the absolute path with the sourceMapRelative option.

browserify().transform(to5ify.configure({
  sourceMapRelative: "/Users/sebastian/Projects/my-cool-website/assets"
}))

$ browserify -d -e script.js -t [ 6to5ify --sourceMapRelative . ]

Additional options

browserify().transform(to5ify.configure({
  // Optional ignore regex - if any filenames **do** match this regex then they
  // aren't compiled
  ignore: /regex/,
 
  // Optional only regex - if any filenames **don't** match this regex then they
  // aren't compiled
  only: /my_es6_folder/
}))

$ browserify -d -e script.js -t [ 6to5ify --ignore regex --only my_es6_folder ]

ES6 Polyfill

As a convenience, the 6to5 polyfill is exposed in 6to5ify. If you've got a browserify-only package this may alleviate the necessity to have both 6to5 & 6to5ify installed.

// In browser code
require("6to5ify/polyfill");