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History

eric sciple ae5dcb46c8 .		2020-01-24 12:30:26 -05:00
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.editorconfig	.	2020-01-24 12:30:26 -05:00
.eslintrc	.	2020-01-24 12:30:26 -05:00
.istanbul.yml	.	2020-01-24 12:30:26 -05:00
.jscs.json	.	2020-01-24 12:30:26 -05:00
.travis.yml	.	2020-01-24 12:30:26 -05:00
CHANGELOG.md	.	2020-01-24 12:30:26 -05:00
index.js	.	2020-01-24 12:30:26 -05:00
LICENSE	.	2020-01-24 12:30:26 -05:00
Makefile	.	2020-01-24 12:30:26 -05:00
package.json	.	2020-01-24 12:30:26 -05:00
README.md	.	2020-01-24 12:30:26 -05:00
test.js	.	2020-01-24 12:30:26 -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