Sohu Tech Products
Mar 29, 2023 · Backend Development
Comprehensive Guide to Packaging JavaScript Libraries: ESM, CJS, UMD and Best Practices
This guide provides clear, practical recommendations for packaging JavaScript libraries—including outputting ESM, CJS and UMD formats, handling multi‑file builds, code compression, sourcemaps, TypeScript typings, external frameworks, modern browser support, and essential package.json fields—so developers can create robust, tree‑shakable, and well‑documented npm packages.
BundlersCJSESM
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