Moved common and utils services to their own service providers

src/utils/services/Storage.js

@@ -0,0 +1,16 @@
+const PREFIX = 'shlink';
+const buildPath = (path) => `${PREFIX}.${path}`;
+
+export default class Storage {
+  constructor(localStorage) {
+    this.localStorage = localStorage;
+  }
+
+  get = (key) => {
+    const item = this.localStorage.getItem(buildPath(key));
+
+    return item ? JSON.parse(item) : undefined;
+  };
+
+  set = (key, value) => this.localStorage.setItem(buildPath(key), JSON.stringify(value));
+}