@taktikorg/sapiente-quas-velit

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

Example

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

Tests

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