remove modern js syntax

Author: caffeinum

chrome-ext/background/storage/chrome_history.js

@@ -1,8 +1,12 @@
 class ChromeHistory extends History {
 
-  collection = new Collection('history', [
-    ...History.AVAILABLE_METHODS, 'login', 'misc'
-  ])
+  constructor () {
+    super()
+
+    this.collection = new Collection('history', [
+      ...History.AVAILABLE_METHODS, 'login', 'misc'
+    ])
+  }
 
   async save (method, params, result) {
     const { status } = result

chrome-ext/popup/instagram_connector.js

@@ -36,10 +36,12 @@ class TimeoutError extends Error {}
 
 class InstagramConnector {
 
-  isStopped = false
-  isConnected = false
+  constructor() {
+    this.isStopped = false
+    this.isConnected = false
+  }
 
-  init = async () => {
+  async init () {
     try {
       const ping = await this.request({
         method: 'ping'
@@ -59,10 +61,12 @@ class InstagramConnector {
 
   }
 
-  start = () => this.isStopped = false
-  kill = () => this.isStopped = true
+  start () { this.isStopped = false }
+  kill () { this.isStopped = true }
+
+  request (data) {
+    return new Promise((resolve, reject) => {
 
-  request = (data) => new Promise((resolve, reject) => {
     if (this.isStopped) return reject(new Error(`Request was killed`))
 
     // { method, params } = method
@@ -91,7 +95,10 @@ class InstagramConnector {
 
     console.log(`send_message`, null, { req_id, ...data })
     chrome.runtime.sendMessage(null, { req_id, ...data })
-  })
+
+    })
+
+  }
 
 }