Packagr

Packagr: Optimize JavaScript and TypeScript Code

Open-source tool for bundling, minifying and optimizing code to reduce bundle size, ideal for Angular, React, Vue apps

What is Packagr?

Packagr is an open-source tool for optimizing and packaging JavaScript and TypeScript code for production use. It was created specifically to help developers prepare Angular, React, and Vue applications for deployment by bundling, transpiling, minifying, and pruning unused code to reduce overall bundle size.

Some key features of Packagr include:

• Tree shaking - Automatically eliminates unused code like unused modules/components to reduce bundle size
• Minification - Shortens variable names, removes comments/whitespace to further reduce size
• Transpilation - Converts TypeScript to plain JavaScript that browsers can understand
• Bundling - Combines many modules/files into a few optimized bundles
• Dead code elimination - Removes unused classes, functions, imports, etc
• ES2015/CommonJS module support - Understands both module types for tree shaking

Packagr is designed to integrate easily into JavaScript project workflows. It can be installed as a devDependency using npm/yarn and configured via a simple packagr config file. Developers can then substitute commands like webpack and rollup with a simple "packagr" command to bundle their apps.

Overall, Packagr allows shipping lighter, faster JavaScript bundles optimized for production. It's a valuable build tool for teams working on modern SPAs using Angular and similar frameworks.

Packagr Features

Official Links