Merge pull request #16 from NativeScript/vladimirov/fix-adb-check

Fix getting adb version when ANDROID_HOME is not set

Author: rosen-vladimirov

lib/sys-info.ts

@@ -160,7 +160,12 @@ export class SysInfo implements NativeScriptDoctor.ISysInfo {
 
 	public getAdbVersion(): Promise<string> {
 		return this.getValueForProperty(() => this.adbVerCache, async (): Promise<string> => {
-			const output = await this.childProcess.spawnFromEvent(await this.androidToolsInfo.getPathToAdbFromAndroidHome(), ["version"], "close", { ignoreError: true });
+			let output: IProcessInfo = null;
+			const pathToAdbFromAndroidHome = await this.androidToolsInfo.getPathToAdbFromAndroidHome();
+			if (pathToAdbFromAndroidHome) {
+				output = await this.childProcess.spawnFromEvent(pathToAdbFromAndroidHome, ["version"], "close", { ignoreError: true });
+			}
+
 			return output && output.stdout ? this.getVersionFromString(output.stdout) : null;
 		});
 	}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nativescript-doctor",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "Library that helps identifying if the environment can be used for development of {N} apps.",
   "main": "lib/index.js",
   "types": "./typings/nativescript-doctor.d.ts",