Barebones code for v2

app/utils/client_error.ts

@@ -0,0 +1,27 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.txt for license information.
+
+import {cleanUrlForLogging} from '@utils/logging';
+
+export class ClientError extends Error {
+    details: Error;
+    intl?: {defaultMessage?: string; id: string;} | { defaultMessage?: string; id: string } | { id: string; defaultMessage?: string; values: any } | { id: string; defaultMessage?: string };
+    url: string;
+    server_error_id?: string | number;
+    status_code?: number;
+
+    constructor(baseUrl: string, data: ClientErrorProps) {
+        super(`${data.message}: ${cleanUrlForLogging(baseUrl, data.url)}`);
+
+        this.details = data.details;
+        this.intl = data.intl;
+        this.message = data.message;
+        this.server_error_id = data.server_error_id;
+        this.status_code = data.status_code;
+        this.url = data.url;
+
+        // Ensure message is treated as a property of this class when object spreading. Without this,
+        // copying the object by using `{...error}` would not include the message.
+        Object.defineProperty(this, 'message', {enumerable: true});
+    }
+}