@odczynflnpm/error-laborum-ab

1.0.0 • Public • Published

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

Example

var isWeakMap = require('@odczynflnpm/error-laborum-ab');
assert(!isWeakMap(function () {}));
assert(!isWeakMap(null));
assert(!isWeakMap(function* () { yield 42; return Infinity; });
assert(!isWeakMap(Symbol('foo')));
assert(!isWeakMap(1n));
assert(!isWeakMap(Object(1n)));

assert(!isWeakMap(new Set()));
assert(!isWeakMap(new WeakSet()));
assert(!isWeakMap(new Map()));

assert(isWeakMap(new WeakMap()));

class MyWeakMap extends WeakMap {}
assert(isWeakMap(new MyWeakMap()));

Tests

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

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Install

npm i @odczynflnpm/error-laborum-ab

Weekly Downloads

9

Version

1.0.0

License

MIT

Unpacked Size

13 kB

Total Files

10

Last publish

Collaborators

  • ducvinh101011z