/es-toolkit

A modern JavaScript utility library that's 2-3 times faster and up to 97% smaller—a major upgrade to lodash.

Primary LanguageTypeScriptMIT LicenseMIT

es-toolkit · MIT License codecov

English | 한국어

es-toolkit is a state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

  • es-toolkit offers a variety of everyday utility functions with modern implementations, such as debounce, delay, chunk, sum, and pick.
  • Designed with performance in mind, es-toolkit achieves 2-3× better performance in modern JavaScript environments.
  • es-toolkit supports tree shaking out of the box, and reduces JavaScript code by up to 97% compared to other libraries.
  • es-toolkit includes built-in TypeScript support, with straightforward yet robust types. It also provides useful type guards such as isNotNil.
  • es-toolkit is battle-tested with 100% test coverage, ensuring reliability and robustness.

Contributing

We welcome contribution from everyone in the community. Read below for detailed contribution guide.

CONTRIBUTING

License

MIT © Viva Republica, Inc. See LICENSE for details.

Toss