Use spawn instead of exec

Throw Errors instead of strings
Bump version

Author: teobugslayer

lib/child-process.ts

@@ -11,7 +11,7 @@ export function exec(command: string): IFuture<any> {
 
 	child_process.exec(command, (error: Error, stdout: NodeBuffer, stderr: NodeBuffer) => {
 		if(error) {
-			errors.fail(`Error ${error.message} while executing ${command}.`);
+			future.throw(new Error(`Error ${error.message} while executing ${command}.`));
 		} else {
 			future.return(stdout ? stdout.toString() : "");
 		}
@@ -44,7 +44,7 @@ export function spawn(command: string, args: string[]): IFuture<string> {
 		if(exitCode === 0) {
 			future.return(capturedOut ? capturedOut.trim() : null);
 		} else {
-			future.throw(util.format("Command %s with arguments %s failed with exit code %s. Error output: \n %s", command, args.join(" "), exitCode, capturedErr));
+			future.throw(new Error(util.format("Command %s with arguments %s failed with exit code %s. Error output:\n %s", command, args.join(" "), exitCode, capturedErr)));
 		}
 	});
 

lib/errors.ts

@@ -1,7 +1,7 @@
 ///<reference path="./.d.ts"/>
 "use strict";
 
-import util = require("util");
+import * as util from "util";
 
 export function fail(errorMessage: string, ...args: string[]) {
 	args.unshift(errorMessage);

lib/simctl.ts

@@ -114,7 +114,7 @@ export class Simctl implements ISimctl {
 	}
 
 	private simctlExec(command: string, args: string[]): IFuture<any> {
-		args = ["xcrun", "simctl", command, ...args];
-		return childProcess.exec(args.join(" "));
+		args = ["simctl", command, ...args];
+		return childProcess.spawn("xcrun", args);
 	}
-}
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ios-sim-portable",
-  "version": "1.0.11-beta",
+  "version": "1.0.12-beta",
   "description": "",
   "main": "./lib/ios-sim.js",
   "scripts": {