Perf: Remove all *Sync methods for Linux startup

main/handlers.js

@@ -2,31 +2,42 @@ module.exports = {
   init
 }
 
-var mkdirp = require('mkdirp')
+var path = require('path')
 
 var log = require('./log')
 
 function init () {
   if (process.platform === 'win32') {
-    var path = require('path')
+    initWindows()
+  }
+  if (process.platform === 'linux') {
+    initLinux()
+  }
+}
+
+function initWindows () {
   var iconPath = path.join(process.resourcesPath, 'app.asar.unpacked', 'static', 'WebTorrentFile.ico')
   registerProtocolHandlerWin32('magnet', 'URL:BitTorrent Magnet URL', iconPath, process.execPath)
   registerFileHandlerWin32('.torrent', 'io.webtorrent.torrent', 'BitTorrent Document', iconPath, process.execPath)
 }
-  if (process.platform === 'linux') {
-    installDesktopFile()
-    installDesktopIcon()
-  }
-}
 
-function installDesktopFile () {
+function initLinux () {
   var config = require('../config')
   var fs = require('fs')
-  var path = require('path')
+  var mkdirp = require('mkdirp')
   var os = require('os')
+  var path = require('path')
 
+  installDesktopFile()
+  installIconFile()
+
+  function installDesktopFile () {
     var templatePath = path.join(config.STATIC_PATH, 'webtorrent.desktop')
-  var desktopFile = fs.readFileSync(templatePath, 'utf8')
+    fs.readFile(templatePath, 'utf8', writeDesktopFile)
+  }
+
+  function writeDesktopFile (err, desktopFile) {
+    if (err) return console.error(err.message)
 
     var appPath = config.IS_PRODUCTION ? path.dirname(process.execPath) : config.ROOT_PATH
     var execPath = process.execPath + (config.IS_PRODUCTION ? '' : ' \.')
@@ -45,17 +56,18 @@ function installDesktopFile () {
       'webtorrent.desktop'
     )
     mkdirp(path.dirname(desktopFilePath))
-  fs.writeFileSync(desktopFilePath, desktopFile)
+    fs.writeFile(desktopFilePath, desktopFile, function (err) {
+      if (err) return console.error(err.message)
+    })
   }
 
-function installDesktopIcon () {
-  var config = require('../config')
-  var fs = require('fs')
-  var path = require('path')
-  var os = require('os')
-
+  function installIconFile () {
     var iconStaticPath = path.join(config.STATIC_PATH, 'WebTorrent.png')
-  var iconFile = fs.readFileSync(iconStaticPath)
+    fs.readFile(iconStaticPath, writeIconFile)
+  }
+
+  function writeIconFile (err, iconFile) {
+    if (err) return console.error(err.message)
 
     var iconFilePath = path.join(
       os.homedir(),
@@ -65,7 +77,10 @@ function installDesktopIcon () {
       'webtorrent.png'
     )
     mkdirp(path.dirname(iconFilePath))
-  fs.writeFileSync(iconFilePath, iconFile)
+    fs.writeFile(iconFilePath, iconFile, function (err) {
+      if (err) return console.error(err.message)
+    })
+  }
 }
 
 /**