Extracted short-url related services to its own service provider

src/utils/ColorGenerator.js

@@ -1,6 +1,5 @@
 import { range } from 'ramda';
 import PropTypes from 'prop-types';
-import storage from './Storage';
 
 const HEX_COLOR_LENGTH = 6;
 const { floor, random } = Math;
@@ -13,7 +12,7 @@ const buildRandomColor = () =>
   }`;
 const normalizeKey = (key) => key.toLowerCase().trim();
 
-export class ColorGenerator {
+export default class ColorGenerator {
   constructor(storage) {
     this.storage = storage;
     this.colors = this.storage.get('colors') || {};
@@ -45,7 +44,3 @@ export const colorGeneratorType = PropTypes.shape({
   getColorForKey: PropTypes.func,
   setColorForKey: PropTypes.func,
 });
-
-const colorGenerator = new ColorGenerator(storage);
-
-export default colorGenerator;

src/utils/Storage.js

@@ -1,7 +1,7 @@
 const PREFIX = 'shlink';
 const buildPath = (path) => `${PREFIX}.${path}`;
 
-export class Storage {
+export default class Storage {
   constructor(localStorage) {
     this.localStorage = localStorage;
   }
@@ -14,15 +14,3 @@ export class Storage {
 
   set = (key, value) => this.localStorage.setItem(buildPath(key), JSON.stringify(value));
 }
-
-const browserStorage = global.localStorage || {
-  getItem() {
-    return '';
-  },
-  setItem() {
-    return '';
-  },
-};
-const storage = new Storage(browserStorage);
-
-export default storage;