tree: 9d55d4af212f207ae91e5b8b636f763f2e7d5c70 [path history] [tgz]
  1. .github/
  2. test/
  3. .editorconfig
  4. .eslintrc
  5. .istanbul.yml
  6. .travis.yml
  7. CHANGELOG.md
  8. index.js
  9. LICENSE
  10. package.json
  11. README.md
node_modules/is-callable/README.md

is-callable Version Badge

Build Status dependency status dev dependency status License Downloads

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browser support

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

Example

var isCallable = require('is-callable');
var assert = require('assert');

assert.notOk(isCallable(undefined));
assert.notOk(isCallable(null));
assert.notOk(isCallable(false));
assert.notOk(isCallable(true));
assert.notOk(isCallable([]));
assert.notOk(isCallable({}));
assert.notOk(isCallable(/a/g));
assert.notOk(isCallable(new RegExp('a', 'g')));
assert.notOk(isCallable(new Date()));
assert.notOk(isCallable(42));
assert.notOk(isCallable(NaN));
assert.notOk(isCallable(Infinity));
assert.notOk(isCallable(new Number(42)));
assert.notOk(isCallable('foo'));
assert.notOk(isCallable(Object('foo')));

assert.ok(isCallable(function () {}));
assert.ok(isCallable(function* () {}));
assert.ok(isCallable(x => x * x));

Install

Install with

npm install is-callable

Tests

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