@lucid-softworks/is-nil

Nullish predicates that narrow TypeScript types. Falsy values such as 0, false, and "" are not nil.

import { isNil, isNonNil } from "@lucid-softworks/is-nil";

isNil(null); // true
isNil(0); // false

const present = [0, null, 1, undefined].filter(isNonNil);
// [0, 1]

API

• isNil(value) narrows to null | undefined.
• isNonNil(value) excludes null | undefined.