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isMapIterator - util/types - Node documentation
function isMapIterator

Usage in Deno

import { isMapIterator } from "node:util/types";
isMapIterator(object: unknown): boolean

Returns true if the value is an iterator returned for a built-in Map instance.

const map = new Map();
util.types.isMapIterator(map.keys());  // Returns true
util.types.isMapIterator(map.values());  // Returns true
util.types.isMapIterator(map.entries());  // Returns true
util.types.isMapIterator(map[Symbol.iterator]());  // Returns true

Parameters

object: unknown

Return Type

boolean