Work during the session

Author: szikszail

module-4/test/toCamelCase.json

@@ -5,18 +5,18 @@
     },
     {
         "arguments": ["Hello World"],
-        "result": "helloWorld"
+        "result": "HelloWorld"
     },
     {
         "arguments": [" Hello    World  "],
-        "result": "helloWorld"
+        "result": "HelloWorld"
     },
     {
         "arguments": ["Hello World! What is up?"],
-        "result": "helloWorldWhatIsUp"
+        "result": "HelloWorldWhatIsUp"
     },
     {
         "arguments": ["Hello World ! 123 What is up?"],
-        "result": "helloWorld123WhatIsUp"
+        "result": "HelloWorld123WhatIsUp"
     }
 ]

module-4/test/toCamelCase.spec.js

@@ -4,7 +4,7 @@ const toCamelCase = require('../toCamelCase');
 const expect = require('chai').expect;
 const testData = require('./toCamelCase.json');
 
-describe('Module 4 - toCamelCase', () => {
+describe.only('Module 4 - toCamelCase', () => {
     it('should be a function', () => {
         expect(toCamelCase).to.be.instanceOf(Function);
     });

module-4/toCamelCase.js

@@ -1,8 +1,24 @@
 'use strict';
+const CHARACTERS_TO_KEEP = "0123456789qwertzuiopasdfghjklyxcvbnm";
 /**
  * It returns the camel-case version of string.
- * E.g.: simple lowercase string => Simple Lowercase String
+ * E.g.: simple lowercase string => SimpleLowercaseString
  *
  * @param {string} toConvert
  * @returns {string} camel-case string or empty string in other cases
- */
+ */
+function toCamelCase(toConvert) {
+    if (typeof toConvert !== 'string') {
+        return '';
+    }
+    return toConvert
+        .split(' ')
+        .map(word => word
+            .split('')
+            .filter(char => CHARACTERS_TO_KEEP.indexOf(char.toLocaleLowerCase()) !== -1)
+            .join('')
+        )
+        .map(word => word.charAt(0).toLocaleUpperCase() + word.substr(1).toLocaleLowerCase())
+        .join('');
+}
+module.exports = toCamelCase;