// package
lodash.isweakmap
type: "module"
// preferences
// replacements (1)
snippet::is-weakmap
Simple or drop-in replacementThis package is no longer necessary. You can use `instanceof WeakMap` to check if a value is a `WeakMap`, or if cross-realm, use `Object.prototype.toString.call(v) === "[object WeakMap]"`
// example
const isWeakMap = v instanceof WeakMap;
// for cross-realm
const isWeakMapCrossRealm =
Object.prototype.toString.call(v) ===
'[object WeakMap]';