[RetainAsar] Initial Add

src/autoStart/index.js

@@ -1,6 +1,11 @@
-// Stub for now at least
+// Stub for now at least, also retaining OpenAsar
+
+const retainAsar = require('./retainAsar');
 
 exports.install = (callback) => { callback(); };
-exports.update = (callback) => { callback(); };
+exports.update = (callback) => {
+  retainAsar();
+  callback();
+};
 exports.uninstall = (callback) => { callback(); };
 exports.isInstalled = (callback) => { callback(true); }; // Stub to true or false?

src/autoStart/retainAsar.js

@@ -0,0 +1,24 @@
+const paths = require('../paths');
+const { join } = require('path');
+const { copyFileSync, readdirSync } = require('original-fs'); // Use original-fs, not Electron's modified fs
+
+module.exports = () => {
+  log('RetainAsar', 'Detected possible host update, retaining OpenAsar...');
+
+  const currentAsarPath = join(require.main.filename, '..');
+
+  const installDir = paths.getInstallPath();
+
+  const nextAppDir = readdirSync(installDir).reverse().find((x) => x.startsWith('app-1'));
+  const nextAsarPath = join(installDir, nextAppDir, 'resources', 'app.asar');
+
+  log('RetainAsar', `Paths:
+Install Dir: ${installDir}
+Next App Dir: ${nextAppDir}
+Current Asar: ${currentAsarPath}
+Next Asar: ${nextAsarPath}`);
+
+  copyFileSync(currentAsarPath, nextAsarPath);
+
+  log('RetainAsar', 'Completed');
+};