types.isWeakMap - util - Node

types.isWeakMap - util - Node documentation

function types.isWeakMap

import { types } from "node:util";



isWeakMap(object: unknown): object is WeakMap<object, unknown>

Returns true if the value is a built-in WeakMap instance.

util.types.isWeakMap(new WeakMap());  // Returns true

Parameters



object: unknown

object is WeakMap<object, unknown>