refactor: completely remove existing javascript and use Svelte app

exclusively for rendering

lib/frontend/services/logger.js

@@ -0,0 +1,41 @@
+class Logger {
+  constructor() {
+    this._remote = false
+  }
+
+  log({ message, level, service }) {
+    console.info(
+      `%c${level}\n%c${service}\n%c${message}`,
+      'color: white; background-color: blue; font-weight: 800',
+      'color: grey',
+      'color: black'
+    )
+
+    if (!this._remote) {
+      return
+    }
+
+    this._log({ message, level, service })
+  }
+
+  setRemoteLogging(value) {
+    this._remote = value
+  }
+
+  _log({ message, level, service }) {
+    return new Promise((resolve, reject) => {
+      fetch('/track', {
+        method: 'POST',
+        headers: {
+          'Accept': 'text/html, application/json',
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ message, level, service, env: 'browser' })
+      })
+        .then(resolve)
+        .catch(reject)
+    })
+  }
+}
+
+export default new Logger()

lib/frontend/services/storageListener.js

@@ -1,10 +1,6 @@
+import { STORAGE_KEYS } from '../constants'
 import { configStore, eventStore } from '../stores'
 
-export const STORAGE_KEYS = {
-  CONFIG: 'fb-to-ical-config',
-  EVENTS: 'fb-to-ical-events',
-}
-
 class StorageListener {
   constructor() {
     this._storeSubscribers = new Set()