es-toolkit
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A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
20 lines • 777 B
TypeScript
//#region src/fp/array/uniqWith.d.ts
/**
* Creates a function that removes duplicate values using a custom equality function.
*
* The first value in each equality group is preserved. The returned function is
* lazy-capable inside {@link pipe}.
*
* @template T - The type of elements in the array.
* @param areItemsEqual - Returns true when two values should be treated as equal.
* @returns A function that maps the piped array to unique values.
*
* @example
* import { pipe, uniqWith } from 'es-toolkit/fp';
*
* pipe([{ id: 1 }, { id: 1 }, { id: 2 }], uniqWith((a, b) => a.id === b.id));
* // => [{ id: 1 }, { id: 2 }]
*/
declare function uniqWith<T>(areItemsEqual: (item: T, other: T) => boolean): (array: readonly T[]) => T[];
//#endregion
export { uniqWith };