Kebab file names

snippets/is-function.md

@@ -0,0 +1,20 @@
+---
+title: Value is function
+tags: type,function
+cover: boulder-beach
+firstSeen: 2017-12-17T17:55:51+02:00
+lastUpdated: 2020-09-15T16:28:04+03:00
+---
+
+Checks if the given argument is a function.
+
+- Use `typeof` to check if a value is classified as a function primitive.
+
+```js
+const isFunction = val => typeof val === 'function';
+```
+
+```js
+isFunction('x'); // false
+isFunction(x => x); // true
+```