Fixed for Xcode 8 and Xcode 9 quirks

lib/simctl-extensions.js

@@ -30,10 +30,36 @@ var shell = require('shelljs'),
 
 var extensions = {
     start: function(deviceid) {
-        shell.exec('killall "Simulator"', { silent: true });
-        var command = util.format(
-            'open `xcode-select -p`/Applications/Simulator.app --args -CurrentDeviceUDID "%s"', deviceid);
-        return shell.exec(command, { silent: true });
+        var is_at_least_xcode_9 = false;
+
+        var command = 'killall Simulator';
+        shell.exec(command, { silent: true });
+
+        command = 'xcodebuild -version';
+        var output = shell.exec(command, { silent: true }).output;
+
+        // parse output for Xcode version
+        var versionMatch = /Xcode (.*)/.exec(output);
+        if (!versionMatch) {
+            console.log('Unable to parse xcodebuild version.');
+            return;
+        } else {
+            is_at_least_xcode_9 = (parseInt(versionMatch[1]) >= 9);
+        }
+
+        if (is_at_least_xcode_9) {
+            // Xcode 9 or greater
+            command = util.format('xcrun simctl boot "%s"', deviceid);
+            shell.exec(command, { silent: true });
+            command = 'open `xcode-select -p`/Applications/Simulator.app';
+            return shell.exec(command, { silent: true });
+        } else {
+            // Xcode 8 or older
+            command = util.format('xcrun simctl shutdown booted');
+            shell.exec(command, { silent: true });
+            command = util.format('xcrun instruments -w "%s"', deviceid);
+            return shell.exec(command, { silent: true });
+        }
     },
 
     log: function(deviceid, filepath) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "simctl",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "library for Xcode 8+ simctl utility on macOS",
   "repository": {
     "type": "git",