keep settings in storage

src/services/settingsService.mjs

@@ -0,0 +1,41 @@
+
+import EventEmitter from 'eventemitter3';
+import { STORAGE_KEY_SETTINGS } from '../app.config';
+
+// const ee = new EventEmitter();
+let data;
+
+const init = () => {
+  try {
+    data = JSON.parse(localStorage.getItem(STORAGE_KEY_SETTINGS) ?? '{}');
+  } catch(e) {
+    data = {};
+  }
+};
+
+const save = () => {
+  const str = JSON.stringify(data);
+  localStorage.setItem(STORAGE_KEY_SETTINGS, str);
+};
+
+const settingsService = {
+  getItem(item) {
+    return data[item];
+  },
+  setItem(item, value) {
+    data[item] = value;
+    save();
+  },
+  get() {
+    return data;
+  },
+  set(value) {
+    data = value;
+    save();
+  },
+  // ee,
+};
+
+export default settingsService;
+
+init();