35 lines
1.2 KiB
JavaScript
35 lines
1.2 KiB
JavaScript
const require_uniqWith = require("../../array/uniqWith.js");
|
|
const require_lazy = require("../_internal/lazy.js");
|
|
//#region src/fp/array/uniqWith.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 }]
|
|
*/
|
|
function uniqWith(areItemsEqual) {
|
|
function uniqWithEager(array) {
|
|
return require_uniqWith.uniqWith(array, areItemsEqual);
|
|
}
|
|
const uniqWithLazy = (emit) => {
|
|
const seen = [];
|
|
return (value) => {
|
|
if (seen.some((item) => areItemsEqual(item, value))) return true;
|
|
seen.push(value);
|
|
return emit(value);
|
|
};
|
|
};
|
|
return require_lazy.combineEagerAndLazyFunctions(uniqWithEager, uniqWithLazy);
|
|
}
|
|
//#endregion
|
|
exports.uniqWith = uniqWith;
|