feat(): add new arr method sort

.commitlintrc.json

@@ -9,20 +9,7 @@
     "type-enum": [
       2,
       "always",
-      [
-        "build",
-        "chore",
-        "ci",
-        "docs",
-        "feat",
-        "fix",
-        "perf",
-        "refactor",
-        "style",
-        "test",
-        "revert",
-        "BREAKING CHANGE"
-      ]
+      ["build", "chore", "ci", "docs", "feat", "fix", "perf", "refactor", "style", "test", "revert"]
     ]
   }
 }

lib/arr/array.spec.ts

@@ -1,13 +1,35 @@
 import { Arr } from './array';
 
 describe('Arr', () => {
-  let arr = new Arr();
+  // let arr: Arr;
 
   beforeEach(async () => {
-    //
+    // arr = new Arr()
   });
 
   it('should be defined', () => {
-    expect(arr).toBeDefined();
+    expect(Arr).toBeDefined();
+  });
+
+  describe('sort', () => {
+    it('should have sort method', () => {
+      expect(Arr).toHaveProperty('sort');
+    });
+
+    it('should use sort method with array number', () => {
+      const array = [2, 1, 4, 10];
+
+      expect(Arr.sort(array)).toEqual([1, 10, 2, 4]);
+      expect(Arr.sort(array, (a, b) => a - b)).toEqual([1, 2, 4, 10]);
+      expect(Arr.sort(array, (a, b) => b - a)).toEqual([10, 4, 2, 1]);
+    });
+
+    it('should use sort method with array number', () => {
+      const string = ['a', 'd', 'b', 'e', 'c'];
+
+      expect(Arr.sort(string)).toEqual(string);
+      expect(Arr.sort(string, (a, b) => a.localeCompare(b))).toEqual(['a', 'b', 'c', 'd', 'e']);
+      expect(Arr.sort(string, (a, b) => b.localeCompare(a))).toEqual(['e', 'd', 'c', 'b', 'a']);
+    });
   });
 });

lib/arr/array.ts

@@ -1 +1,14 @@
-export class Arr<T> extends Array<T> {}
+import { ArrException } from '../exceptions';
+
+export const Arr = class {
+  /**
+   * Sort array.
+   * @param array
+   * @param fn
+   */
+  static sort(array: Array<any>, fn?: (a, b) => number) {
+    if (!Array.isArray(array)) throw new ArrException(`Your argument is not array`);
+
+    return array.sort(fn);
+  }
+};

lib/exceptions/arr.exception.ts

@@ -0,0 +1,7 @@
+export class ArrException extends Error {
+  name: 'ArrException';
+
+  constructor(message: string) {
+    super(message);
+  }
+}

lib/exceptions/index.ts

@@ -1,2 +1,3 @@
 export * from './str.exception';
 export * from './num.exception';
+export * from './arr.exception';