Modern lodash alternative with TypeScript
es-toolkit is a modern JavaScript utility library by Korean fintech Toss, built as a high-performance Lodash replacement. With TypeScript-first design and full tree-shaking support, it cuts bundle sizes by up to 97 percent. Provides utility functions for arrays, objects, strings, and async operations with 2-3x better runtime performance. Includes an es-toolkit/compat layer for seamless migration from Lodash without rewriting existing codebases.