Auto-detect running editor on Windows for error overlay (#2552)

* Auto-detect running editor on Windows for error overlay

* Ignore process output if powershell call fails

* Support Notepad++

Author: levrik

packages/react-dev-utils/launchEditor.js

@@ -8,12 +8,12 @@
  */
 'use strict';
 
-var fs = require('fs');
-var path = require('path');
-var child_process = require('child_process');
-var os = require('os');
-var chalk = require('chalk');
-var shellQuote = require('shell-quote');
+const fs = require('fs');
+const path = require('path');
+const child_process = require('child_process');
+const os = require('os');
+const chalk = require('chalk');
+const shellQuote = require('shell-quote');
 
 function isTerminalEditor(editor) {
   switch (editor) {
@@ -28,14 +28,21 @@ function isTerminalEditor(editor) {
 // Map from full process name to binary that starts the process
 // We can't just re-use full process name, because it will spawn a new instance
 // of the app every time
-var COMMON_EDITORS = {
+const COMMON_EDITORS_OSX = {
   '/Applications/Atom.app/Contents/MacOS/Atom': 'atom',
   '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta': '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta',
   '/Applications/Sublime Text.app/Contents/MacOS/Sublime Text': '/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl',
   '/Applications/Sublime Text 2.app/Contents/MacOS/Sublime Text 2': '/Applications/Sublime Text 2.app/Contents/SharedSupport/bin/subl',
   '/Applications/Visual Studio Code.app/Contents/MacOS/Electron': 'code',
 };
 
+const COMMON_EDITORS_WIN = [
+  'Code.exe',
+  'atom.exe',
+  'sublime_text.exe',
+  'notepad++.exe',
+];
+
 function addWorkspaceToArgumentsIfExists(args, workspace) {
   if (workspace) {
     args.unshift(workspace);
@@ -44,7 +51,7 @@ function addWorkspaceToArgumentsIfExists(args, workspace) {
 }
 
 function getArgumentsForLineNumber(editor, fileName, lineNumber, workspace) {
-  var editorBasename = path.basename(editor).replace(/\.(exe|cmd|bat)$/i, '');
+  const editorBasename = path.basename(editor).replace(/\.(exe|cmd|bat)$/i, '');
   switch (editorBasename) {
     case 'vim':
     case 'mvim':
@@ -54,11 +61,14 @@ function getArgumentsForLineNumber(editor, fileName, lineNumber, workspace) {
     case 'Atom Beta':
     case 'subl':
     case 'sublime':
+    case 'sublime_text':
     case 'wstorm':
     case 'appcode':
     case 'charm':
     case 'idea':
       return [fileName + ':' + lineNumber];
+    case 'notepad++':
+      return ['-n' + lineNumber, fileName];
     case 'joe':
     case 'emacs':
     case 'emacsclient':
@@ -68,6 +78,7 @@ function getArgumentsForLineNumber(editor, fileName, lineNumber, workspace) {
     case 'mine':
       return ['--line', lineNumber, fileName];
     case 'code':
+    case 'Code':
       return addWorkspaceToArgumentsIfExists(
         ['-g', fileName + ':' + lineNumber],
         workspace
@@ -94,21 +105,41 @@ function guessEditor() {
     return shellQuote.parse(process.env.REACT_EDITOR);
   }
 
-  // Using `ps x` on OSX we can find out which editor is currently running.
-  // Potentially we could use similar technique for Windows and Linux
-  if (process.platform === 'darwin') {
-    try {
-      var output = child_process.execSync('ps x').toString();
-      var processNames = Object.keys(COMMON_EDITORS);
-      for (var i = 0; i < processNames.length; i++) {
-        var processName = processNames[i];
+  // Using `ps x` on OSX or `Get-Process` on Windows we can find out which editor is currently running.
+  // Potentially we could use similar technique for Linux
+  try {
+    if (process.platform === 'darwin') {
+      const output = child_process.execSync('ps x').toString();
+      const processNames = Object.keys(COMMON_EDITORS_OSX);
+      for (let i = 0; i < processNames.length; i++) {
+        const processName = processNames[i];
         if (output.indexOf(processName) !== -1) {
-          return [COMMON_EDITORS[processName]];
+          return [COMMON_EDITORS_OSX[processName]];
+        }
+      }
+    } else if (process.platform === 'win32') {
+      const output = child_process
+        .execSync('powershell -Command "Get-Process | Select-Object Path"', {
+          stdio: ['pipe', 'pipe', 'ignore'],
+        })
+        .toString();
+      const runningProcesses = output.split('\r\n');
+      for (let i = 0; i < runningProcesses.length; i++) {
+        // `Get-Process` sometimes returns empty lines
+        if (!runningProcesses[i]) {
+          continue;
+        }
+
+        const fullProcessPath = runningProcesses[i].trim();
+        const shortProcessName = path.basename(fullProcessPath);
+
+        if (COMMON_EDITORS_WIN.indexOf(shortProcessName) !== -1) {
+          return [fullProcessPath];
         }
       }
-    } catch (error) {
-      // Ignore...
     }
+  } catch (error) {
+    // Ignore...
   }
 
   // Last resort, use old skool env vars
@@ -146,7 +177,7 @@ function printInstructions(fileName, errorMessage) {
   console.log();
 }
 
-var _childProcess = null;
+let _childProcess = null;
 function launchEditor(fileName, lineNumber) {
   if (!fs.existsSync(fileName)) {
     return;
@@ -178,7 +209,7 @@ function launchEditor(fileName, lineNumber) {
     fileName = path.relative('', fileName);
   }
 
-  var workspace = null;
+  let workspace = null;
   if (lineNumber) {
     args = args.concat(
       getArgumentsForLineNumber(editor, fileName, lineNumber, workspace)