Prevent zombie processes in dev mode when refreshing app

src/main/bridge.js

@@ -7,6 +7,12 @@ import { resolve } from 'path'
 
 import setupAutoUpdater, { quitAndInstall } from './autoUpdate'
 
+const processes = []
+
+function cleanProcesses() {
+  processes.forEach(kill => kill())
+}
+
 function onForkChannel(forkType, callType) {
   return (event: any, payload) => {
     const { type, data } = payload
@@ -24,6 +30,8 @@ function onForkChannel(forkType, callType) {
       }
     }
 
+    processes.push(kill)
+
     const onMessage = payload => {
       const { type, data, options = {} } = payload
       if (callType === 'async') {
@@ -48,6 +56,8 @@ function onForkChannel(forkType, callType) {
 ipcMain.on('usb', onForkChannel('usb', 'async'))
 ipcMain.on('accounts', onForkChannel('accounts', 'async'))
 
+ipcMain.on('clean-processes', cleanProcesses)
+
 const handlers = {
   updater: {
     init: setupAutoUpdater,

src/renderer/events.js

@@ -120,6 +120,9 @@ export default ({ store, locked }: { store: Object, locked: boolean }) => {
     handler(data)
   })
 
+  // Ensure all sub-processes are killed before creating new ones (dev mode...)
+  ipcRenderer.send('clean-processes')
+
   // Start detection when we plug/unplug devices
   sendEvent('usb', 'devices.listen')