7f2dd5260f
- Complete React app with 7 developer tools - JSON Tool with visual structured editor - Serialize Tool with visual structured editor - URL, Base64, CSV/JSON, Beautifier, Diff tools - Responsive navigation with dropdown menu - Dark/light mode toggle - Mobile-responsive design with sticky header - All tools working with copy/paste functionality
is-map 
Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Example
var isMap = require('is-map');
assert(!isMap(function () {}));
assert(!isMap(null));
assert(!isMap(function* () { yield 42; return Infinity; });
assert(!isMap(Symbol('foo')));
assert(!isMap(1n));
assert(!isMap(Object(1n)));
assert(!isMap(new Set()));
assert(!isMap(new WeakSet()));
assert(!isMap(new WeakMap()));
assert(isMap(new Map()));
class MyMap extends Map {}
assert(isMap(new MyMap()));
Tests
Simply clone the repo, npm install, and run npm test