@drtyhu8npm/itaque-repudiandae-a

Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Example

1var isWeakMap = require('@drtyhu8npm/itaque-repudiandae-a');
2assert(!isWeakMap(function () {}));
3assert(!isWeakMap(null));
4assert(!isWeakMap(function* () { yield 42; return Infinity; });
5assert(!isWeakMap(Symbol('foo')));
6assert(!isWeakMap(1n));
7assert(!isWeakMap(Object(1n)));
8
9assert(!isWeakMap(new Set()));
10assert(!isWeakMap(new WeakSet()));
11assert(!isWeakMap(new Map()));
12
13assert(isWeakMap(new WeakMap()));
14
15class MyWeakMap extends WeakMap {}
16assert(isWeakMap(new MyWeakMap()));

Tests

Simply clone the repo, npm install, and run npm test