feat: drop support for macOS Sierra and below

Drop support for macOS Sierra and below as we are no longer testing this OS. Drop a line on stderr on each CLI command and inform the user that this OS is not supported.

Change the public API (getSystemWarnings) to return objects with information about the severity of the warnings. This way the consumer can decide how to handle the warnings.

Fix an issue when getting macOS version from System Profile - the code was not working when version has two numbers (10.14 for example).

Add new method in logger that allows printing to stderr. It should be used instead of `console.error`, so we can make the code testable.

Author: rosen-vladimirov

lib/commands/debug.ts

@@ -135,6 +135,7 @@ export class DebugIOSCommand implements ICommand {
 		private $platformService: IPlatformService,
 		private $options: IOptions,
 		private $injector: IInjector,
+		private $sysInfo: ISysInfo,
 		private $projectData: IProjectData,
 		$iosDeviceOperations: IIOSDeviceOperations,
 		$iOSSimulatorLogProvider: Mobile.IiOSSimulatorLogProvider) {
@@ -161,6 +162,12 @@ export class DebugIOSCommand implements ICommand {
 			this.$errors.fail(`Timeout option specifies the seconds NativeScript CLI will wait to find the inspector socket port from device's logs. Must be a number.`);
 		}
 
+		if (this.$options.inspector) {
+			const macOSWarning = await this.$sysInfo.getMacOSWarningMessage();
+			if (macOSWarning && macOSWarning.severity === SystemWarningsSeverity.high) {
+				this.$errors.fail(`You cannot use NativeScript Inspector on this OS. To use it, please update your OS.`);
+			}
+		}
 		const result = await this.debugPlatformCommand.canExecute(args);
 		return result;
 	}

lib/common/declarations.d.ts

@@ -1143,6 +1143,12 @@ interface IDeviceLiveSyncService extends IDeviceLiveSyncServiceBase {
 	afterInstallApplicationAction?(deviceAppData: Mobile.IDeviceAppData, localToDevicePaths: Mobile.ILocalToDevicePathData[]): Promise<boolean>;
 }
 
+interface ISystemWarning {
+	message: string;
+	severity: SystemWarningsSeverity;
+	toString?: () => string;
+}
+
 interface ISysInfo {
 	getSysInfo(config?: NativeScriptDoctor.ISysInfoConfig): Promise<NativeScriptDoctor.ISysInfoData>;
 	/**
@@ -1163,15 +1169,15 @@ interface ISysInfo {
 
 	/**
 	 * Gets all global warnings for the current environment, for example Node.js version compatibility, OS compatibility, etc.
-	 * @return {Promise<string[]>} All warnings. Empty array is returned in case the system is setup correctly.
+	 * @return {Promise<ISystemWarning[]>} All warnings. Empty array is returned in case the system is setup correctly.
 	 */
-	getSystemWarnings(): Promise<string[]>;
+	getSystemWarnings(): Promise<ISystemWarning[]>;
 
 	/**
 	 * Gets warning message for current macOS version.
 	 * @return {Promise<string>} Message in case the current macOS version is deprecated, null otherwise.
 	 */
-	getMacOSWarningMessage(): Promise<string>;
+	getMacOSWarningMessage(): Promise<ISystemWarning>;
 
 	/**
 	 * Returns the value of engines.node key from CLI's package.json file.

lib/common/definitions/logger.d.ts

@@ -16,4 +16,5 @@ interface ILogger {
 	prepare(item: any): string;
 	printInfoMessageOnSameLine(message: string): void;
 	printMsgWithTimeout(message: string, timeout: number): Promise<void>;
+	printOnStderr(formatStr?: any, ...args: any[]): void;
 }

lib/common/host-info.ts

@@ -57,17 +57,7 @@ export class HostInfo implements IHostInfo {
 		try {
 			const systemProfileOutput = await this.$childProcess.exec(systemProfileCommand);
 
-			// Output of command is similar to:
-			/*
-Software:
-
-    System Software Overview:
-
-      System Version: macOS 10.13.3 (17D47)
-      Kernel Version: Darwin 17.4.0
-      Time since boot: 68 days 22:12
-*/
-			const versionRegExp = /System Version:\s+?macOS\s+?(\d+\.\d+)\.\d+\s+/g;
+			const versionRegExp = /System Version:\s+?macOS\s+?(\d+\.\d+)(\.\d+)?\s+/g;
 			const regExpMatchers = versionRegExp.exec(systemProfileOutput);
 			const macOSVersion = regExpMatchers && regExpMatchers[1];
 			if (macOSVersion) {

lib/common/logger.ts

@@ -148,6 +148,12 @@ export class Logger implements ILogger {
 		this.write(formattedMessage);
 	}
 
+	public printOnStderr(...args: string[]): void {
+		if (process.stderr) {
+			process.stderr.write(util.format.apply(null, args));
+		}
+	}
+
 	private getPasswordEncodedArguments(args: string[]): string[] {
 		return _.map(args, argument => {
 			if (typeof argument === 'string' && !!argument.match(/password/i)) {

lib/common/test/unit-tests/host-info.ts

@@ -65,6 +65,27 @@ describe("hostInfo", () => {
 			assert.equal(calledCommand, "system_profiler SPSoftwareDataType -detailLevel mini");
 		});
 
+		it("returns correct macOS version based on system_profile, when version has two numbers only", async () => {
+			const testInjector = createTestInjector();
+			const hostInfo = testInjector.resolve<IHostInfo>("hostInfo");
+			const childProcess = testInjector.resolve<IChildProcess>("childProcess");
+			let calledCommand = "";
+			childProcess.exec = async (command: string, options?: any, execOptions?: IExecOptions): Promise<any> => {
+				calledCommand = command;
+				return `Software:
+
+    System Software Overview:
+
+      System Version: macOS 10.14 (18A391)
+      Kernel Version: Darwin 18.0.0
+      Time since boot: 1 day 5:52`;
+			};
+
+			const macOSVersion = await hostInfo.getMacOSVersion();
+			assert.deepEqual(macOSVersion, "10.14");
+			assert.equal(calledCommand, "system_profiler SPSoftwareDataType -detailLevel mini");
+		});
+
 		it("returns correct macOS version when system_profile call throws", async () => {
 			const testInjector = createTestInjector();
 			const hostInfo = testInjector.resolve<IHostInfo>("hostInfo");

lib/common/test/unit-tests/stubs.ts

@@ -41,6 +41,10 @@ export class CommonLoggerStub implements ILogger {
 	printMarkdown(message: string): void {
 		this.output += message;
 	}
+
+	printOnStderr(...args: string[]): void {
+		// nothing to do here
+	}
 }
 
 export class ErrorsStub implements IErrors {

lib/common/verify-node-version.ts

@@ -48,12 +48,12 @@ export function verifyNodeVersion(): void {
 	}
 
 	var nodeWarning = getNodeWarning();
-	if (nodeWarning) {
-		console.warn((os.EOL + nodeWarning + os.EOL).yellow.bold);
+	if (nodeWarning && nodeWarning.message) {
+		console.warn((`${os.EOL}${nodeWarning.message}${os.EOL}`).yellow.bold);
 	}
 }
 
-export function getNodeWarning(): string {
+export function getNodeWarning(): ISystemWarning {
 	var verificationOpts = getNodeVersionOpts();
 	var cliName = verificationOpts.cliName;
 	var supportedVersionsRange = verificationOpts.supportedVersionsRange;
@@ -78,6 +78,9 @@ export function getNodeWarning(): string {
 		}
 	}
 
-	return warningMessage;
+	return {
+		message: warningMessage,
+		severity: SystemWarningsSeverity.medium
+	};
 }
 /* tslint:enable */

lib/constants.ts

@@ -186,9 +186,10 @@ export class AssetConstants {
 export class MacOSVersions {
 	public static Sierra = "10.12";
 	public static HighSierra = "10.13";
+	public static Mojave = "10.14";
 }
 
-export const MacOSDeprecationStringFormat = "Support for macOS %s is deprecated and will be removed in one of the next releases of NativeScript. Please, upgrade to the latest macOS version.";
+export const MacOSDeprecationStringFormat = "NativeScript does not support macOS %s and some functionality may not work. Please, upgrade to the latest macOS version.";
 export const PROGRESS_PRIVACY_POLICY_URL = "https://www.progress.com/legal/privacy-policy";
 export class SubscribeForNewsletterMessages {
 	public static AgreeToReceiveEmailMsg = "I agree".green.bold + " to receive email communications from Progress Software or its Partners (`https://www.progress.com/partners/partner-directory`)," +

lib/definitions/system-warnings.d.ts

@@ -0,0 +1,4 @@
+declare const enum SystemWarningsSeverity {
+	medium = "medium",
+	high = "high"
+}