Parse, Don't Validate – In a Language That Doesn't Want You To
Software Development, Testing & QA, Developer Tools & Environments(cekrem.github.io)view on HackerNews
TypeScriptparsingvalidationtype systemnominal typingbranded typesdiscriminated unions
Author: fagnerbrack
Date: 6/30/2026
Article Summary:
The article discusses the importance of parsing over validation in TypeScript, using the concept of "Parse, don't validate" to ensure that the type system carries the proof and not memory.