Merge pull request #893 from 30-seconds/compact-whitespace

[FEATURE] Add compactWhitespace snippet

snippets/compactWhitespace.md

@@ -0,0 +1,14 @@
+### compactWhitespace
+
+Returns a string with whitespaces compacted.
+
+Use `String.prototype.replace()` with a regular expression to replace all occurences of 2 or more whitespace characters with a single space.
+
+```js
+const compactWhitespace = str => str.replace(/\s{2,}/g,' ');
+```
+
+```js
+compactWhitespace('Lorem    Ipsum'); // 'Lorem Ipsum'
+compactWhitespace('Lorem \n Ipsum'); // 'Lorem Ipsum'
+```

tag_database

@@ -31,6 +31,7 @@ coalesceFactory:utility,intermediate
 collectInto:adapter,function,array,intermediate
 colorize:node,utility,string,intermediate
 compact:array,beginner
+compactWhitespace:string,regexp,beginner
 compose:function,intermediate
 composeRight:function,intermediate
 converge:function,intermediate

test/compactWhitespace.test.js

@@ -0,0 +1,18 @@
+const expect = require('expect');
+const {compactWhitespace} = require('./_30s.js');
+
+test('compactWhitespace is a Function', () => {
+  expect(compactWhitespace).toBeInstanceOf(Function);
+});
+test('compactWhitespace returns a string with compacted whitespaces', () => {
+  expect(compactWhitespace('Lorem Ipsum')).toBe('Lorem Ipsum');
+});
+test('compactWhitespace returns a string with compacted whitespaces', () => {
+  expect(compactWhitespace('Lorem    Ipsum')).toBe('Lorem Ipsum');
+});
+test('compactWhitespace returns a string with compacted whitespaces', () => {
+  expect(compactWhitespace('Lorem \t Ipsum')).toBe('Lorem Ipsum');
+});
+test('compactWhitespace returns a string with compacted whitespaces', () => {
+  expect(compactWhitespace('\t   Lorem \n\n  \n Ipsum  ')).toBe(' Lorem Ipsum ');
+});