Keep your bundle size in check

 

 

minimal setup

npm install bundlesize --save-dev

 

usage

Add it to your scripts in package.json

"scripts": {
  "test": "bundlesize"
}

 

Or you can use npx with NPM 5.2+.

npx bundlesize

configuration

 

1) Add the path and gzip maxSize in your package.json

{
  "name": "your cool library",
  "version": "1.1.2",
  "bundlesize": [
    {
      "path": "./dist.js",
      "maxSize": "3 kB"
    }
  ]
}

bundlesize also supports glob patterns

Example:

"bundlesize": [
  {
    "path": "./dist/vendor-*.js",
    "maxSize": "3 kB"
  },
  {
    "path": "./dist/chunk-*.js",
    "maxSize": "3 kB"
  }
]

This makes it great for using with applications that are bundled with another tool. It will match multiple files if necessary and create a new row for each file.

 

2) build status

Currently works for Travis CI, CircleCI, Wercker, and Drone.

• Authorize bundlesize for status access, copy the token provided.
• Add this token as BUNDLESIZE_GITHUB_TOKEN as environment parameter in your CIs project settings.

(Ask me for help if you're stuck)

 

CLI

example usage:

bundlesize -f dist/*.js -s 20kB

For more granular configuration, we recommend configuring it in the package.json (documented above).

 

like it?

⭐ this repo

 

how to contribute?

• CONTRIBUTING.md

 

who uses bundlesize?

• preact
• lighthouse
• styled-components
• emotion
• glamorous
• Popper.js
• react-apollo
• hyperapp
• css-constructor
• redux-saga

 

TODO

• Work with other CI tools (AppVeyor, etc.)
• Automate setup (setting env_var)

 

similar projects

• BuildSize - GitHub App, no manual configuration required
• travis-weigh-in - Uses Python rather than Node.js

license

MIT © siddharthkp

sponsor