is-symbol
Determine if a value is an ES6 Symbol or not.
Last updated 12 days ago
by ljharb
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MIT
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package.json
$ npm install is-symbol
SYNC missed versions from
official npm registry.
is-symbol 
Is this an ES6 Symbol value?
Example
var isSymbol = require('is-symbol');
assert(!isSymbol(function () {}));
assert(!isSymbol(null));
assert(!isSymbol(function* () { yield 42; return Infinity; });
assert(isSymbol(Symbol.iterator));
assert(isSymbol(Symbol('foo')));
assert(isSymbol(Symbol.for('foo')));
assert(isSymbol(Object(Symbol('foo'))));
Tests
Simply clone the repo, npm install, and run npm test
Current Tags
- 1.1.1 ... latest (12 days ago)
7 Versions
Maintainers (1)
ljharb
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Dependencies (3)
- call-bound ^1.0.2
- has-symbols ^1.1.0
- safe-regex-test ^1.1.0
Dev Dependencies (19)
- @arethetypeswrong/cli ^0.17.1
- @ljharb/eslint-config ^21.1.1
- @ljharb/tsconfig ^0.2.2
- @types/for-each ^0.3.3
- @types/object-inspect ^1.13.0
- @types/tape ^5.6.5
- auto-changelog ^2.5.0
- encoding ^0.1.13
- es-value-fixtures ^1.5.0
- eslint =8.8.0
- for-each ^0.3.3
- has-tostringtag ^1.0.2
- in-publish ^2.0.1
- npmignore ^0.3.1
- nyc ^10.3.2
- object-inspect ^1.13.3
- safe-publish-latest ^2.0.0
- tape ^5.9.0
- typescript next