fix(lib/webpackConfig): __dirname with electron 12

Author: nklayman

lib/webpackConfig.js

@@ -1,10 +1,17 @@
 const fs = require('fs')
+const semver = require('semver')
 const { DefinePlugin } = require('webpack')
 
 async function chainWebpack (api, pluginOptions, config) {
   const rendererProcessChain =
     pluginOptions.chainWebpackRendererProcess || ((config) => config)
-  const realDirname = 'require("electron").remote.app.getAppPath()'
+  const { devDependencies } = require(api.resolve('./package.json'))
+  const realDirname = semver.gte(
+    devDependencies.electron.replace(/^\^/, ''),
+    '12.0.0'
+  )
+    ? '__dirname.replace("electron.asar/renderer", "app.asar")'
+    : 'require("@electron/remote").app.getAppPath()'
   if (process.env.IS_ELECTRON) {
     if (pluginOptions.nodeIntegration) {
       // Add externals