initial commit

lib/errors.ts

@@ -0,0 +1,10 @@
+/** An error that maps directly onto an HTTP response (see lib/http.ts). */
+export class HttpError extends Error {
+  constructor(
+    public status: number,
+    message: string,
+    public details?: unknown
+  ) {
+    super(message);
+  }
+}