Creates a common package from a collection of scripts

$ npm i -D common-bundler

The bundler is a little opinionated about how you structure your scripts but something like this is a good start:

.
└── src
    ├── bundles
    │   ├── bundleA
    │   │   ├── bundleADep.js
    │   │   └── main.js
    │   └── bundleB
    │       └── main.js
    └── common
        └── menu.js

Now just let the bundler do its thing

$ bundler src/bundles -o dist

The bundler will give you some info about what its doing and you’ll end up with a few scripts to include in whichever pages you want, this will let you include just what the page needs to work and not drag around kb of dependency unless you need them

.
└── dist
    ├── bundleA.js
    ├── bundleB.js
    └── common.js

In general you’ll need common and whichever bundle you need in a page, making sure common goes in first.

<script src="dist/common.js"></script>
<script src="dist/bundleA.js"></script>

You can use it a global module, but that kind-of sucks so add the build process to your npm scripts object in your package.json

{
    "scripts": {
        "build:scripts": "bundler src/bundles -o dist"
    }
}

Then let npm execute it

$ npm run build:scripts

Check the help to see the full list of options

$ bundler -h

Adds a transform to the browserify pipeline

Feel free to add multiple transforms, as usual the order is important

Note that there is generally no need to pass uglify, omitting the debug flag will tell the bundler to uglify up the scripts, currently just uses UglifyJS

$ bundler src/bundles -o dist -t flowcheck -t babelify

Sticks browserify into debug mode which leaves the build unminified and gives you source maps too

Having unminified and source maps is useful for something like babel that transpiles code as you’ll have access to human-readable transpiled code and the ES6 version that you’re writing

$ bundler src/bundles -o dist -d

Select a glob of files to watch for changes and run a build when they are updated

npm will tend to expand globs so specify it as a string and it’ll get passed through to glob and that’ll give a list of files to chokidar

To try and make sure the build isn’t stale the watcher will always try to fire a new bundle on save unless it’s already working, whereby it’ll wait until it’s finished and run a build sequentially to stop multiple builds if you’re saving quickly or updating multiple files concurrently.

$ bundler src/bundles -o dist --watch 'src/**/*.js'

Specifies a configuration file to set up browserify

You can specify a custom file (such as .bundlerrc) if you like but using package.json will work just as well, just add a bundler key to your package config and they’ll get passed to browserify.

...,
"bundler": {
  "extensions": [
    ".js",
    ".jsx"
  ]
},
...

$ bundler src/bundles -o dist -c package.json

Enjoy responsibly!