https://github.com/xotic750/is-function-x

Determine whether a given value is a function object.
https://github.com/xotic750/is-function-x

browser ecmascript function isfunction nodejs

Last synced: 3 months ago
JSON representation

Determine whether a given value is a function object.

• Host: GitHub
• URL: https://github.com/xotic750/is-function-x
• Owner: Xotic750
• License: mit
• Created: 2016-01-20T00:49:41.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2023-01-04T23:11:55.000Z (about 2 years ago)
• Last Synced: 2024-04-25T22:40:46.939Z (9 months ago)
• Topics: browser, ecmascript, function, isfunction, nodejs
• Language: JavaScript
• Homepage:
• Size: 2.67 MB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 20
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        












































## is-function-x

Determine whether a given value is a function object.



### `module.exports(value, [allowClass])` ⇒ boolean ⏏

Checks if `value` is classified as a `Function` object.

**Kind**: Exported function  

**Returns**: boolean - Returns `true` if `value` is correctly classified,

else `false`.

| Param        | Type                 | Default            | Description                    |

| ------------ | -------------------- | ------------------ | ------------------------------ |

| value        | \*      |                    | The value to check.            |

| [allowClass] | boolean | false | Whether to filter ES6 classes. |

**Example**

```js

import isFunction from 'is-function-x';

console.log(isFunction()); // false

console.log(isFunction(Number.MIN_VALUE)); // false

console.log(isFunction('abc')); // false

console.log(isFunction(true)); // false

console.log(isFunction({name: 'abc'})); // false

console.log(isFunction(function() {})); // true

console.log(isFunction(new Function())); // true

console.log(isFunction(function* test1() {})); // true

console.log(isFunction(function test2(a, b) {})); // true

console.log(isFunction(async function test3() {})); // true

console.log(isFunction(class Test {})); // false

console.log(isFunction(class Test {}, true)); // true

console.log(

  isFunction((x, y) => {

    return this;

  }),

); // true

```