liup a01a5aa773 | 3 週之前 | |
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.. | ||
.github | 3 週之前 | |
test | 3 週之前 | |
.editorconfig | 3 週之前 | |
.eslintrc | 3 週之前 | |
.nycrc | 3 週之前 | |
CHANGELOG.md | 3 週之前 | |
LICENSE | 3 週之前 | |
README.md | 3 週之前 | |
index.d.ts | 3 週之前 | |
index.js | 3 週之前 | |
package.json | 3 週之前 | |
tsconfig.json | 3 週之前 |
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
var isWeakMap = require('is-weakmap');
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()));
Simply clone the repo, npm install
, and run npm test