snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

apps/meteor/client/lib/errorHandling.ts

@@ -0,0 +1,48 @@
+import { t } from '../../app/utils/lib/i18n';
+
+const isObject = (obj: unknown): obj is object => (typeof obj === 'object' || typeof obj === 'function') && obj !== null;
+
+const hasProperty = <TProperty extends number | string | symbol>(
+	obj: unknown,
+	property: TProperty,
+): obj is { [key in TProperty]: unknown } => isObject(obj) && property in obj;
+
+const hasXHR = (
+	error: object,
+): error is {
+	xhr: {
+		responseJSON: {
+			error: string;
+			status: string;
+			messages: string[];
+			payload?: any;
+		};
+	};
+} => hasProperty(error, 'xhr') && hasProperty(error.xhr, 'responseJSON');
+
+export function getErrorMessage(error: unknown, defaultMessage?: string): string {
+	if (typeof error === 'string') {
+		return t(error);
+	}
+
+	if (!isObject(error)) {
+		if (defaultMessage) return getErrorMessage(defaultMessage);
+
+		throw new TypeError('no default error message specified');
+	}
+
+	if (hasXHR(error)) {
+		return getErrorMessage(error.xhr.responseJSON, defaultMessage);
+	}
+
+	const message =
+		(hasProperty(error, 'reason') && typeof error.reason === 'string' ? error.reason : undefined) ??
+		(hasProperty(error, 'error') && typeof error.error === 'string' ? error.error : undefined) ??
+		(hasProperty(error, 'message') && typeof error.message === 'string' ? error.message : undefined) ??
+		defaultMessage;
+	const details = hasProperty(error, 'details') && isObject(error.details) ? error.details : undefined;
+
+	if (message) return t(message, Object.fromEntries(Object.entries(details ?? {}).map(([key, value]) => [key, t(value)])));
+
+	return getErrorMessage(defaultMessage);
+}