filterKeys

function

function filterKeys<T>(record: Readonly<Record<string, T>>, predicate: (key: string) => boolean): Record<string, T>

Returns a new record with all entries of the given record except the ones that have a key that does not match the given predicate.

record: Readonly<Record<string, T>>

The record to filter keys from.

predicate: (key: string) => boolean

The function to test each key for a condition.

Returns

A new record with all entries that have a key that matches the given predicate.

import { filterKeys } from "@ende/collections/filter-keys";
import { assertEquals } from "@ende/assert";

const menu = {
  Salad: 11,
  Soup: 8,
  Pasta: 13,
};

const menuWithoutSalad = filterKeys(menu, (item) => item !== "Salad");

assertEquals(
  menuWithoutSalad,
  {
    Soup: 8,
    Pasta: 13,
  },
);