implement AbortedError to represent an aborted operation

packages/backend/src/misc/errors/AbortedError.ts

@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: hazelnoot and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { renderInlineError } from '@/misc/render-inline-error.js';
+
+/**
+ * Throw when an operation is unexpectedly aborted.
+ */
+export class AbortedError extends Error {
+	// Fix the error name in stack traces - https://stackoverflow.com/a/71573071
+	override name = this.constructor.name;
+
+	constructor(signal: AbortSignal, message?: string, options?: Omit<ErrorOptions, 'cause'>) {
+		super(
+			`Operation aborted: ${message ?? renderInlineError(signal.reason)}`,
+			{
+				...(options ?? {}),
+				cause: signal.reason,
+			},
+		);
+	}
+}