Add isEmpty

snippets/isEmpty.md

@@ -0,0 +1,22 @@
+### isEmpty
+
+Returns true if the a value is an empty object, collection, map or set, has no enumerable properties or is any type that is not considered a collection.
+
+Check if the provided value is `null` or if its `length` is equal to `0`.
+
+```js
+const isEmpty = val => val == null || !(Object.keys(val) || val).length;
+```
+
+```js
+isEmpty(new Map()); // true
+isEmpty(new Set()); // true
+isEmpty([]); // true
+isEmpty({}); // true
+isEmpty(''); // true
+isEmpty([1, 2]); // false
+isEmpty({ a: 1, b: 2 }); // false
+isEmpty('text'); // false
+isEmpty(123); // true - type is not considered a collection
+isEmpty(true); // true - type is not considered a collection
+```

tag_database

@@ -93,6 +93,7 @@ isAbsoluteURL:string,utility,browser,url
 isArrayLike:type,array
 isBoolean:type
 isDivisible:math
+isEmpty:type,array,object,string
 isEven:math
 isFunction:type,function
 isLowerCase:string,utility