fix for Windows 10 (WSL)

README.md

@@ -53,3 +53,23 @@ module.exports = (on, config) => {
   on("file:preprocessor", watchApp(cucumber()));
 };
 ```
+### How to use on Windows
+
+This example is to use browser-sync with cypress as described at https://www.26brains.com/2019/02/the-holy-grail-cypress-io-browser-sync-automatically-rerun-tests/
+
+On Windows you need cross-env to set WAIT_FOR_MESSAGE variable. Also note double quotes in scripts (`WAIT_FOR_MESSAGE=\"Reloading Browsers...\"`) 
+
+```bash
+npm install --save-dev cross-env npm-run-all
+```
+
+package.json:
+
+```javascript 
+{
+    "serve": "browser-sync start -s src -w --no-open",
+    "cypress": "cypress open",
+    "serveWithCypress": "cross-env WAIT_FOR_MESSAGE=\"Reloading Browsers...\" cypressAppWatcher npm run serve",
+    "test": "npm-run-all --parallel serveWithCypress cypress"
+}
+```

appWatcher.js

@@ -1,12 +1,12 @@
 #!/usr/bin/env node
-const { spawn } = require("child_process");
+const { spawn } = require("cross-spawn");
 const ipc = require("node-ipc");
 ipc.config.silent = true;
 
 let appProc;
 
 function watchIt([command, ...rest]) {
-  appProc = spawn(myArgs[0], rest);
+  appProc = spawn(command, rest);
 
   appProc.stdout.on("data", data => {
     let stringifiedData = data.toString();
@@ -26,7 +26,7 @@ function watchIt([command, ...rest]) {
 }
 
 process.on("uncaughtException", exception => {
-  process.kill(appProc.pid);
+  process.exit(appProc.pid); // switched kill to exit, else invalid pid error on windows
   throw new Error(exception);
 });
 

package.json

@@ -10,6 +10,7 @@
   "license": "ISC",
   "dependencies": {
     "@cypress/browserify-preprocessor": "^1.1.0",
+    "cross-spawn": "^7.0.1",
     "node-ipc": "^9.1.1"
   },
   "keywords": [