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James Ives d7ce14d431 Dependencies		2019-11-19 07:48:29 -05:00
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.eslintrc	Dependencies	2019-11-19 07:48:29 -05:00
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.jscs.json	Dependencies	2019-11-19 07:48:29 -05:00
.travis.yml	Dependencies	2019-11-19 07:48:29 -05:00
CHANGELOG.md	Dependencies	2019-11-19 07:48:29 -05:00
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test.js	Dependencies	2019-11-19 07:48:29 -05:00

README.md

is-callable

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));

Tests

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