@n3okill/utils/dist/mjs/array/uniqueFilter.js

Many javascript helpers

import { is } from "../type/is";
/**
 * Returns a reduced array based on given comparator (if none given, will use `Type.is`)
 * @param arr Array to be reduced
 * @param comparator comparator function to use `(arg1, arg2)=>boolean`
 * @returns
 */
export function uniqueFilter(arr, comparator = is) {
    return arr.reduce((prev, curr) => {
        const a = prev.filter((itemPrev) => comparator(curr, itemPrev));
        if (!a.length) {
            prev.push(curr);
        }
        return prev;
    }, []);
}
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