balance new task

katas/balance-the-arrays/balance-the-arrays.js

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+function balance(arr1, arr2) {
+  //CODE HERE!
+}

katas/balance-the-arrays/balance-the-arrays_test.js

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+describe('balance function', function() {
+
+    it('should return false if provided arrays aren\'t balanced', function() {
+        let array1 = ["a","a"],
+            array2 = ["c"];
+
+        expect(balance(array1, array2)).toBeFalsy();
+
+        array1 = ["a","b","c","d","e","f","g","g"];
+        array2 = ["h","h","i","j","k","l","m","m"];
+
+        expect(balance(array1, array2)).toBeFalsy();
+    });
+
+    it('should return true if provided arrays aren\'t balanced', function() {
+        let array1 = ["a","a","a","a","a","b","b","b"],
+            array2 = ["c","c","c","c","c","d","d","d"];
+
+        expect(balance(array1, array2)).toBeTruthy();
+    });
+});

katas/balance-the-arrays/readme.md

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+####Description:
+
+Check that the two provided arrays both contain the same number of different unique items, regardless of order. For example in the following:
+    [a,a,a,a,b,b] and [c,c,c,d,c,d]
+Both arrays have four of one item and two of another, so balance should return true.
+
+####Example:
+
+```js
+let array1 = ["a","a","a","a","a","b","b","b"],
+    array2 = ["c","c","c","c","c","d","d","d"];
+
+    balance(array1, array2) //true
+
+    array1 = ["a","a"],
+    array2 = ["c"];
+
+    balance(array1, array2) //false
+
+    array1 = ["a","b","c","d","e","f","g","g"];
+    array2 = ["h","h","i","j","k","l","m","m"];
+
+    balance(array1, array2) //false
+```
+
+See [tests in balance-the-arrays_test.js](https://github.com/AlexVvx/code-wars/blob/master/katas/balance-the-arrays/balance-the-arrays_test.js)
+
+#####[Original Kata](https://www.codewars.com/kata/balance-the-arrays)
+
+Good luck