Initial project bootstrap

shared/_core/errors.ts

@@ -0,0 +1,19 @@
+/**
+ * Base HTTP error class with status code.
+ * Throw this from route handlers to send specific HTTP errors.
+ */
+export class HttpError extends Error {
+  constructor(
+    public statusCode: number,
+    message: string
+  ) {
+    super(message);
+    this.name = "HttpError";
+  }
+}
+
+// Convenience constructors
+export const BadRequestError = (msg: string) => new HttpError(400, msg);
+export const UnauthorizedError = (msg: string) => new HttpError(401, msg);
+export const ForbiddenError = (msg: string) => new HttpError(403, msg);
+export const NotFoundError = (msg: string) => new HttpError(404, msg);