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    xorWith (Functional Programming) es-toolkit

    Creates a function that returns the symmetric difference using a custom equality function. Use it with pipe.

    const result = pipe(array, xorWith(secondArray, areItemsEqual));
    Info

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

    Usage

    xorWith returns values that are not matched across the two arrays according to areItemsEqual.

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

pipe(
  [{ id: 1 }, { id: 2 }],
  xorWith([{ id: 2 }, { id: 3 }], (a, b) => a.id === b.id)
); // => [{ id: 1 }, { id: 3 }]

    Parameters

    secondArrayreadonly T[]required

    The array to compare with the piped array.

    areItemsEqual(item: T, other: T) => booleanrequired

    The function that decides whether two values are equal.

    Returns

    A function that maps a readonly T[] to the symmetric difference by custom equality.

    (array: readonly T[]) => T[]
    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.