mirror-rhinstaller-node-cache/is-weakset
2026-10-07 14:02:33 +00:00
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test 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
.editorconfig 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
.eslintrc 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
.nycrc 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
CHANGELOG.md 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
index.d.ts 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
index.js 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
LICENSE 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
package.json 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
README.md 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00
tsconfig.json 6bcb149103748493767ce4eb69859ae015bac454f5dc3d500c50a8c25d10610a package.json 2026-10-07 14:02:33 +00:00

is-weakset Version Badge

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

Example

var isWeakSet = require('is-weakset');
assert(!isWeakSet(function () {}));
assert(!isWeakSet(null));
assert(!isWeakSet(function* () { yield 42; return Infinity; });
assert(!isWeakSet(Symbol('foo')));
assert(!isWeakSet(1n));
assert(!isWeakSet(Object(1n)));

assert(!isWeakSet(new Set()));
assert(!isWeakSet(new WeakMap()));
assert(!isWeakSet(new Map()));

assert(isWeakSet(new WeakSet()));

class MyWeakSet extends WeakSet {}
assert(isWeakSet(new MyWeakSet()));

Tests

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