babel-loader

Webpack loader that transpiles JavaScript/TypeScript files using Babel. Current stable version is 10.1.1, with a release cadence of minor/patch updates every few months. It integrates Babel's transformation pipeline into webpack's build process, supporting features like caching, customizing cache identifiers, and passing source maps. Key differentiators: it is the official Babel team supported loader, tightly integrated with webpack's module system, and supports both webpack and Rspack. It requires @babel/core as a peer dependency and works with Babel 7 or 8 beta. Compared to alternatives like esbuild-loader or swc-loader, babel-loader offers full Babel plugin ecosystem compatibility and extensive customization options for legacy browser support.