add sample js

Author: pasit.r

src/sorter.js

@@ -0,0 +1,3 @@
+export const sort = (list = [], key = '') => list.sort(compare(key))
+
+const compare = key => (a, b) => a[key].localeCompare(b[key])

test/sorter.spec.js

@@ -0,0 +1,20 @@
+import { sort } from '../src/sorter'
+import { expect } from 'chai'
+
+describe('sort', () => {
+
+    const data = [{
+        name: "Foo"
+    }, {
+        name: "Bar"
+    }, {
+        name: "Zab"
+    }]
+
+    it('should sort string property', () => {
+        const sorted = sort(data, 'name')
+        expect(sorted[0].name).to.eq('Bar')
+        expect(sorted[1].name).to.eq('Foo')
+        expect(sorted[2].name).to.eq('Zab')
+    })
+})