Declare setting types

src/settings/storage.ts

@@ -0,0 +1,15 @@
+import SettingData, { DefaultSettingData } from '../shared/SettingData';
+
+export const load = async(): Promise<SettingData> => {
+  let { settings } = await browser.storage.local.get('settings');
+  if (!settings) {
+    return DefaultSettingData;
+  }
+  return SettingData.valueOf(settings);
+};
+
+export const save = (data: SettingData) => {
+  return browser.storage.local.set({
+    settings: data.toJSON(),
+  });
+};