cwchristerw/musix-oss
1
0
Fork 0
mirror of https://github.com/musix-org/musix-oss synced 2024-11-14 03:30:18 +00:00
Code
da84fcfed1
musix-oss/node_modules/is-map/README.md
MatteZ02 30022c7634 Modules
2020-03-03 22:30:50 +02:00

1.5 KiB
Raw Blame History

is-map Version Badge

Build Status dependency status dev dependency status License Downloads

npm badge

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