feat: scaffold workspace with search, fetch, and extract packages

packages/tts/src/errors.ts

@@ -0,0 +1,35 @@
+/** Errors thrown by the TTS fetcher. */
+
+export class TtsError extends Error {
+  constructor(
+    message: string,
+    readonly status: number = 500,
+  ) {
+    super(message);
+    this.name = 'TtsError';
+  }
+}
+
+/** The Steam API returned no details for the requested item. */
+export class ItemNotFoundError extends TtsError {
+  constructor(id: string) {
+    super(`No Workshop item found for id ${id}`, 404);
+    this.name = 'ItemNotFoundError';
+  }
+}
+
+/** The item exists but has no downloadable `file_url`. */
+export class NoFileError extends TtsError {
+  constructor(id: string) {
+    super(`Workshop item ${id} has no downloadable save file`, 404);
+    this.name = 'NoFileError';
+  }
+}
+
+/** The Steam API rejected the request (bad key, rate limit, etc.). */
+export class SteamApiError extends TtsError {
+  constructor(message: string, status = 502) {
+    super(message, status);
+    this.name = 'SteamApiError';
+  }
+}