Function isNullish

Return whether a value is exactly undefined or null.

Usage:

import { isNullish } from "mazey";

const ret1 = isNullish(undefined);
const ret2 = isNullish(null);
const ret3 = isNullish("abc");
console.log(ret1, ret2, ret3);
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Output:

true true false
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Other falsy values, including false, 0, NaN, and an empty string, return false.