For AI agents: the complete documentation index is available at /llms.txt, the full documentation bundle is available at /llms-full.txt, and this page is available as Markdown at /reference/fp/minBy.md.
Install massaman

    minBy (Functional Programming) es-toolkit

    Creates a function that returns the value with the smallest computed score. Use it with pipe.

    const result = pipe(array, minBy(getValue));
    Info

    Prefer the original es-toolkit minBy in ordinary code. Use this fp variant when composing transformations with pipe.

    Usage

    minBy calls getValue for each value in the piped array and returns the value with the smallest result. If the array is empty, it returns undefined.

    import { minBy, pipe } from 'es-toolkit/fp';

pipe(
  [{ score: 10 }, { score: 30 }, { score: 20 }],
  minBy(item => item.score)
); // => { score: 10 }

    Parameters

    getValue(item: T) => numberrequired

    The function that returns the value used for comparison.

    Returns

    A function that maps a readonly T[] to the minimum item, or undefined.

    (array: readonly T[]) => T | undefined
    Source: es-toolkit

    Re-exported verbatim from es-toolkit. Implementation, edge cases, and performance behavior are owned upstream. This page mirrors the documentation at the pinned version; the linked source is authoritative.