deleteFromSet - API reference

API reference › @evolu/common › Set › deleteFromSet

function deleteFromSet<T>(set: ReadonlySet<T>, item: T): ReadonlySet<T>;

Defined in: packages/common/src/Set.ts:192

Returns a new readonly set with an item removed.

If the item doesn't exist, returns a new set with the same elements (still a new reference for change detection).

Deleting without mutation

import { assertEqual, assertTrue, deleteFromSet } from "@evolu/common";

const original = new Set([1, 2, 3]);
assertEqual(deleteFromSet(original, 2), new Set([1, 3]));
assertTrue(deleteFromSet(original, 5) !== original);