Don't use electron-is-running-in-asar, fix AppImage builds

Change-type: patch

lib/gui/app/modules/image-writer.js

@@ -21,7 +21,6 @@ const _ = require('lodash')
 const path = require('path')
 const os = require('os')
 const ipc = require('node-ipc')
-const isRunningInAsar = require('electron-is-running-in-asar')
 const electron = require('electron')
 const store = require('../models/store')
 const settings = require('../models/settings')
@@ -41,26 +40,6 @@ const selectionState = require('../models/selection-state')
  */
 const THREADS_PER_CPU = 16
 
-/**
- * @summary Get application entry point
- * @function
- * @private
- *
- * @returns {String} entry point
- *
- * @example
- * const entryPoint = imageWriter.getApplicationEntryPoint()
- */
-const getApplicationEntryPoint = () => {
-  if (isRunningInAsar()) {
-    return path.join(process.resourcesPath, 'app.asar')
-  }
-  const relativeEntryPoint = _.last(electron.remote.process.argv)
-
-  const PROJECT_ROOT = path.join(__dirname, '..', '..', '..', '..')
-  return path.resolve(PROJECT_ROOT, relativeEntryPoint)
-}
-
 /**
  * @summary Handle a flash  error and log it to analytics
  * @function
@@ -205,7 +184,7 @@ exports.performWrite = (image, drives, onProgress) => {
     })
 
     const argv = _.attempt(() => {
-      let entryPoint = getApplicationEntryPoint()
+      let entryPoint = electron.remote.app.getAppPath()
 
       // AppImages run over FUSE, so the files inside the mount point
       // can only be accessed by the user that mounted the AppImage.

package.json

@@ -52,7 +52,6 @@
     "color": "^2.0.1",
     "d3": "^4.13.0",
     "debug": "^3.1.0",
-    "electron-is-running-in-asar": "^1.0.0",
     "electron-updater": "4.0.6",
     "etcher-sdk": "^2.0.13",
     "flexboxgrid": "^6.3.0",