From 4d148a48ec375db2dc86f09f274bf5c3f76cce39 Mon Sep 17 00:00:00 2001
From: mrmr1993
Date: Thu, 17 Aug 2017 19:49:07 +0100
Subject: Add Utils.isFirefox

This also stops the content scripts from being injected into each frame
on reload (in Firefox only). They do not successfully connect to the
background page, and it causes considerable lag, so we lose nothing by
doing this.
---
 background_scripts/main.coffee | 1 +
 lib/utils.coffee               | 1 +
 2 files changed, 2 insertions(+)

diff --git a/background_scripts/main.coffee b/background_scripts/main.coffee
index 15292ab6..412b8781 100644
--- a/background_scripts/main.coffee
+++ b/background_scripts/main.coffee
@@ -5,6 +5,7 @@ root = exports ? window
 chrome.runtime.onInstalled.addListener ({ reason }) ->
   # See https://developer.chrome.com/extensions/runtime#event-onInstalled
   return if reason in [ "chrome_update", "shared_module_update" ]
+  return if Utils.isFirefox()
   manifest = chrome.runtime.getManifest()
   # Content scripts loaded on every page should be in the same group. We assume it is the first.
   contentScripts = manifest.content_scripts[0]
diff --git a/lib/utils.coffee b/lib/utils.coffee
index 78eed12c..520d5b8c 100644
--- a/lib/utils.coffee
+++ b/lib/utils.coffee
@@ -7,6 +7,7 @@ window.forTrusted ?= (handler) -> (event) ->
     true
 
 Utils =
+  isFirefox: -> 0 <= navigator.userAgent.indexOf "Firefox"
   getCurrentVersion: ->
     chrome.runtime.getManifest().version
 
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