zero config, zero dependency bundler for tiny javascript packages


License: MIT

Language: JavaScript

Keywords: babel, build, bundle, bundling, esm, esmodules, microlib, module-bundler, npm, packaging, react, rollup, tiny-javascript-packages, tiny-modules, typescript, umd, watch, yarn

klap 👏

a zero config, zero dependency bundler for tiny javascript packages.

Build Status David David npm NPM

klap init output klap build output

✨ Features

  • 🎉 zero config: bundle your library using only a package.json
  • 💥 zero config: typescript support (just rename *.js to *.ts)
  • 🌟 zero config: code transforms using babel macros
  • 🚀 zero dependency: uses gcc-style bundling.
  • 💇 tiny bundles for all inputs
  • 🔥 Modern JS syntax with class properties, async/await, and generators
  • 🎊 Supports react and styled-components out of the box.
  • 🐙 creates multiple output formats cjs, esm and umd
  • ⚡️ Built in Minification and Gzip Size Tracking
  • 🌀 Built in development server for quick prototyping.

💪 Powered By

  • rollup - Next-generation ES module bundler
  • babel - The compiler for next generation JavaScript

🍽 Usage

First, setup your project using klap init:

npx klap init

This will create a minimal package.json with source, main, module and browser entries and the build, watch and start scripts.

  "name": "...",
  "version": "0.0.0",
  "files": [ "dist" ],
  "source": "src/sum.js",         # source file to compile and bundle
  "main": "dist/sum.cjs.js",      # commonjs target
  "module": "dist/sum.esm.js",    # esm target
  "browser": "dist/sum.js",       # umd target
  "scripts": {
    "build": "klap build",        # build your project
    "watch": "klap watch",        # build and watch for changes
    "start": "klap start",        # watch and start dev server
  "devDependencies": {
    "klap": "3.2.0"               # klap as dev dependency

Note: Dropping pkg.main will disable cjs output. This also applies to esm and umd as well.

Then use npm run or yarn to invoke npm scripts as you normally would.

💢 Granular Control

klap uses sensible defaults for most part. However, as needed, use below properties in package.json to fine tune klap.

You can also use cli flags to control config options for klap.

option cli flag(s) description default
source -s --source source file to compile and bundle src/index.js
klap.name -n --name package name for umd bundles sanitized pkg.name
klap.port -p --port port for development server 1234
klap.target -t --target target for development server (`umd es`)
browserslist -b --browserlist browserlist compatible compilation target >1%, not ie 11, not op_mini all
klap.example -e --example location of index js/ts file for example public/index.js
klap.fallback -f --fallback location of index html file for example public/index.html
klap.sourcemap --no-sourcemap sourcemaps for builds true
klap.minify --no-minify minification for builds true
klap.pragma --pragma pragma for jsx and tsx compilation React.createElement
klap.frag --frag pragma for jsx and tsx fragments React.Fragment
klap.globals global names for umd bundles {}
klap.namedExports named exports for commonjs modules {}

Note: See default browserlist coverage

🥂 License

klap is licensed under the MIT License.

Documentation is licensed under Creative Common License.

Created with ♥ by @osdevisnot and all contributors.

Project Statistics

Sourcerank 6
Repository Size 1.64 MB
Stars 11
Forks 0
Watchers 1
Open issues 1
Dependencies 998
Contributors 1
Tags 24
Last updated
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Top Contributors See all

Abhishek Shende

Packages Referencing this Repo

zero config, zero dependency bundler for tiny javascript packages.
Latest release 3.5.0 - Updated - 11 stars

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v3.5.0 December 09, 2019
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