feat(endsWith): add endsWith function (#90) (#91)

add a function that checks if a string ends with a given input

Closes #90

Author: danielfsousa

src/endsWith.js

@@ -0,0 +1,14 @@
+export default endsWith
+
+/**
+ * Original source: http://stackoverflow.com/questions/280634/endswith-in-javascript
+ *
+ * Checks if a string ends with a given input
+ *
+ * @param {String} str - The string to validate against
+ * @param {String} suffix - The input to match
+ * @return {Boolean} - True if 'str' ends with 'suffix', otherwise false
+ */
+function endsWith(str, suffix) {
+  return str.indexOf(suffix, str.length - suffix.length) !== -1
+}

src/index.js

@@ -29,6 +29,7 @@ import toPower from './to-power'
 import mod from './mod'
 import shallowEqual from './shallow-equal'
 import swapCase from './swap-case'
+import endsWith from './endsWith'
 
 export {
   initArray,
@@ -62,4 +63,5 @@ export {
   mod,
   shallowEqual,
   swapCase,
+  endsWith,
 }

test/endsWith.test.js

@@ -0,0 +1,16 @@
+import test from 'ava'
+import {endsWith} from '../src'
+
+test('ends with input', t => {
+  const string = 'Brasilia'
+  const input = 'lia'
+  const result = endsWith(string, input)
+  t.true(result)
+})
+
+test('does not end with input', t => {
+  const string = 'Brazil'
+  const input = 'USA'
+  const result = endsWith(string, input)
+  t.false(result)
+})