Merge from vscode 8e0f348413f4f616c23a88ae30030efa85811973 (#6381)

* Merge from vscode 8e0f348413f4f616c23a88ae30030efa85811973

* disable strict null check

extensions/vscode-test-resolver/src/util/processes.ts

@@ -0,0 +1,37 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as cp from 'child_process';
+import * as path from 'path';
+
+export interface TerminateResponse {
+	success: boolean;
+	error?: any;
+}
+
+export function terminateProcess(p: cp.ChildProcess, extensionPath: string): TerminateResponse {
+	if (process.platform === 'win32') {
+		try {
+			const options: any = {
+				stdio: ['pipe', 'pipe', 'ignore']
+			};
+			cp.execFileSync('taskkill', ['/T', '/F', '/PID', p.pid.toString()], options);
+		} catch (err) {
+			return { success: false, error: err };
+		}
+	} else if (process.platform === 'darwin' || process.platform === 'linux') {
+		try {
+			const cmd = path.join(extensionPath, 'scripts', 'terminateProcess.sh');
+			const result = cp.spawnSync(cmd, [process.pid.toString()]);
+			if (result.error) {
+				return { success: false, error: result.error };
+			}
+		} catch (err) {
+			return { success: false, error: err };
+		}
+	} else {
+		p.kill('SIGKILL');
+	}
+	return { success: true };
+}