Remeda Data Utilities

Remeda is a data utility library for TypeScript created as a type-safe alternative to Lodash and Ramda, with all functions written natively in TypeScript rather than having types added as an afterthought through declaration files. This native TypeScript approach enables deep type integration where type inference flows through function pipelines, producing precise output types at compile time rather than relying on generic or loosely-typed results, catching errors in the IDE and CI pipeline instead of in production logs. Remeda implements automatic currying for every function, meaning the same function can be called in two ways including the data-first style where the data argument is passed first and the data-last style where data is omitted to create a partially applied function for use in pipe compositions. This dual-calling convention eliminates the need for separate functional and imperative API surfaces, letting developers choose the appropriate style for each use case without changing imports. The pipe function structures complex data transformations as readable left-to-right sequences, with automatic lazy evaluation optimization that defers expensive computations until their results are actually consumed, enabling short-circuit evaluation when downstream operations like take or find terminate early. Remeda includes utilities for object manipulation including pick, omit, set, merge, and pullObject for building objects from arrays, array operations including filter, map, reduce, sort, groupBy, partition, unique, and chunk, type guards including isString, isNumber, isObject, and isDefined, and higher-order functions including pipe, compose, and createPipe.