Merge from vscode 3d67364fbfcf676d93be64f949e9b33e7f1b969e (#5028)

src/vs/platform/telemetry/node/errorTelemetry.ts

@@ -0,0 +1,44 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { onUnexpectedError } from 'vs/base/common/errors';
+import BaseErrorTelemetry from '../common/errorTelemetry';
+
+export default class ErrorTelemetry extends BaseErrorTelemetry {
+	protected installErrorListeners(): void {
+		// Print a console message when rejection isn't handled within N seconds. For details:
+		// see https://nodejs.org/api/process.html#process_event_unhandledrejection
+		// and https://nodejs.org/api/process.html#process_event_rejectionhandled
+		const unhandledPromises: Promise<any>[] = [];
+		process.on('unhandledRejection', (reason: any, promise: Promise<any>) => {
+			unhandledPromises.push(promise);
+			setTimeout(() => {
+				const idx = unhandledPromises.indexOf(promise);
+				if (idx >= 0) {
+					promise.catch(e => {
+						unhandledPromises.splice(idx, 1);
+						console.warn(`rejected promise not handled within 1 second: ${e}`);
+						if (e.stack) {
+							console.warn(`stack trace: ${e.stack}`);
+						}
+						onUnexpectedError(reason);
+					});
+				}
+			}, 1000);
+		});
+
+		process.on('rejectionHandled', (promise: Promise<any>) => {
+			const idx = unhandledPromises.indexOf(promise);
+			if (idx >= 0) {
+				unhandledPromises.splice(idx, 1);
+			}
+		});
+
+		// Print a console message when an exception isn't handled.
+		process.on('uncaughtException', (err: Error) => {
+			onUnexpectedError(err);
+		});
+	}
+}