Zod

Raised as a usability problem by 5 people on Hacker News over 3 years (2023–2025), in 5 threads.

People raised many different problems with Zod, but no single problem has yet been raised by 3 people in 3 different months and threads.

Unreviewed issues were grouped by machine: Claude Haiku labelled each comment as a usability complaint, named what it's about and summed up the problem in a line, and a small model grouped similar problems. Nobody has checked them by hand. Expect mistakes.

The newest 5 complaints

Validation error messages are awful and hard to understand2025-11-23
Library is unusable without documentation comments, which are missing2025-05-22
Editor code completion and type inference take up to three seconds2025-04-13
Zod errors are obscure, super long lines that are hard to read2024-10-10
Type parameters are verbose and messy; must pass Zod's own schema types instead of data types2023-08-12