Add get NativeScript CLI version method to the public API

Author: TsvetanMilanov

lib/sys-info.ts

@@ -38,6 +38,7 @@ export class SysInfo {
 	private gradleVerCache: string;
 	private sysInfoCache: ISysInfoData;
 	private isCocoaPodsWorkingCorrectlyCache: boolean = null;
+	private nativeScriptCliVersion: string;
 
 	constructor(private childProcess: ChildProcess,
 		private fileSystem: FileSystem,
@@ -252,6 +253,7 @@ export class SysInfo {
 			result.gitVer = await this.getGitVersion();
 			result.gradleVer = await this.getGradleVersion();
 			result.isCocoaPodsWorkingCorrectly = await this.isCocoaPodsWorkingCorrectly();
+			result.nativeScriptCliVersion = await this.getNativeScriptCliVersion();
 
 			this.sysInfoCache = result;
 		}
@@ -284,6 +286,15 @@ export class SysInfo {
 		return !!this.isCocoaPodsWorkingCorrectlyCache;
 	}
 
+	public async getNativeScriptCliVersion(): Promise<string> {
+		if (!this.nativeScriptCliVersion) {
+			const output = await this.execCommand("tns --version");
+			this.nativeScriptCliVersion = output.trim();
+		}
+
+		return this.nativeScriptCliVersion;
+	}
+
 	private async exec(cmd: string, execOptions?: ExecOptions): Promise<IProcessInfo> {
 		if (cmd) {
 			try {

test/sys-info.ts

@@ -26,6 +26,7 @@ interface IChildProcessResults {
 	gitVersion: IChildProcessResultDescription;
 	podVersion: IChildProcessResultDescription;
 	pod: IChildProcessResultDescription;
+	nativeScriptCliVersion: IChildProcessResultDescription;
 }
 
 interface IHostInfoMockOptions {
@@ -54,7 +55,8 @@ function createChildProcessResults(childProcessResult: IChildProcessResults): ID
 		'android.bat': childProcessResult.androidInstalled, // for Windows
 		"mono --version": childProcessResult.monoVersion,
 		"git --version": childProcessResult.gitVersion,
-		"gradle -v": childProcessResult.gradleVersion
+		"gradle -v": childProcessResult.gradleVersion,
+		"tns --version": childProcessResult.nativeScriptCliVersion
 	};
 }
 
@@ -182,7 +184,8 @@ describe("SysInfo unit tests", () => {
 				gradleVersion: { result: setStdOut("Gradle 2.8") },
 				gitVersion: { result: setStdOut("git version 1.9.5") },
 				podVersion: { result: setStdOut("0.38.2") },
-				pod: { result: setStdOut("success") }
+				pod: { result: setStdOut("success") },
+				nativeScriptCliVersion: { result: setStdOut("2.5.0") }
 			};
 
 			delete process.env[JavaHomeName];
@@ -205,6 +208,7 @@ describe("SysInfo unit tests", () => {
 				assert.deepEqual(result.monoVer, "1.0.6");
 				assert.deepEqual(result.gradleVer, "2.8");
 				assert.deepEqual(result.gitVer, "1.9.5");
+				assert.deepEqual(result.nativeScriptCliVersion, childProcessResult.nativeScriptCliVersion.result.stdout);
 			};
 
 			it("on Windows", async () => {
@@ -277,7 +281,8 @@ describe("SysInfo unit tests", () => {
 					gradleVersion: { shouldThrowError: true },
 					gitVersion: { shouldThrowError: true },
 					podVersion: { shouldThrowError: true },
-					pod: { shouldThrowError: true }
+					pod: { shouldThrowError: true },
+					nativeScriptCliVersion: { shouldThrowError: true }
 				};
 			});
 

typings/nativescript-doctor.d.ts

@@ -96,6 +96,12 @@ declare module NativeScriptDoctor {
 		 */
 		isCocoaPodsWorkingCorrectly(): Promise<boolean>;
 
+		/**
+		 * Returns the version of the globally installed NativeScript CLI.
+		 * @return {Promise<string>} Returns the version of the globally installed NativeScript CLI.
+		 */
+		getNativeScriptCliVersion(): Promise<string>;
+
 		/**
 		 * Returns the whole system information.
 		 * @return {Promise<ISysInfoData>} The system information.
@@ -244,6 +250,12 @@ declare module NativeScriptDoctor {
 		 * @type {boolean}
 		 */
 		isCocoaPodsWorkingCorrectly: boolean;
+
+		/**
+		 * NativeScript CLI version string, as returned by `tns --version`.
+		 * @type {string}
+		 */
+		nativeScriptCliVersion: string;
 	}
 
 	/**