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juncheng.li
27cf5ae2d3
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1 year ago | |
|---|---|---|
| .. | ||
| test | 1 year ago | |
| .eslintignore | 1 year ago | |
| .eslintrc | 1 year ago | |
| .nycrc | 1 year ago | |
| CHANGELOG.md | 1 year ago | |
| LICENSE | 1 year ago | |
| README.md | 1 year ago | |
| index.js | 1 year ago | |
| package.json | 1 year ago | |
README.md
is-weakref 
[![npm badge][11]][1]
Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Example
var isWeakRef = require('is-weakref');
assert(!isWeakRef(function () {}));
assert(!isWeakRef(null));
assert(!isWeakRef(function* () { yield 42; return Infinity; });
assert(!isWeakRef(Symbol('foo')));
assert(!isWeakRef(1n));
assert(!isWeakRef(Object(1n)));
assert(!isWeakRef(new Set()));
assert(!isWeakRef(new WeakSet()));
assert(!isWeakRef(new Map()));
assert(!isWeakRef(new WeakMap()));
assert(isWeakRef(new WeakRef({})));
class MyWeakRef extends WeakRef {}
assert(isWeakRef(new MyWeakRef({})));
Tests
Simply clone the repo, npm install, and run npm test