lhl 2bdf874dbb create		11 月之前
..
.github	2bdf874dbb create	11 月之前
test	2bdf874dbb create	11 月之前
.editorconfig	2bdf874dbb create	11 月之前
.eslintrc	2bdf874dbb create	11 月之前
.gitattributes	2bdf874dbb create	11 月之前
.nycrc	2bdf874dbb create	11 月之前
CHANGELOG.md	2bdf874dbb create	11 月之前
LICENSE	2bdf874dbb create	11 月之前
README.md	2bdf874dbb create	11 月之前
index.d.ts	2bdf874dbb create	11 月之前
index.js	2bdf874dbb create	11 月之前
package.json	2bdf874dbb create	11 月之前
tsconfig.json	2bdf874dbb create	11 月之前

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

README.md

is-map

Example

Tests