2022-02-01
2640
#typescript
Sneh Pandya
90351
Feb 1, 2022 ⋅ 9 min read

Methods for TypeScript runtime type checking

Sneh Pandya Exploring the horizon with a knack for product management. Co-host of the NinjaTalks podcast and community organizer at Google Developers Group. Explorer, adventurer, traveler.

Recent posts:

You're doing vibe coding wrong: Here's how to do it right. A LogRocket article

You’re doing vibe coding wrong: Here’s how to do it right

Vibe coding isn’t just AI-assisted chaos. Here’s how to avoid insecure, unreadable code and turn your “vibes” into real developer productivity.

Chizaram Ken
Oct 28, 2025 ⋅ 11 min read

Exploring spec-driven development with the new GitHub Spec Kit

GitHub SpecKit brings structure to AI-assisted coding with a spec-driven workflow. Learn how to build a consistent, React-based project guided by clear specs and plans.

Emmanuel John
Oct 28, 2025 ⋅ 7 min read

The different ways to use CSS :has(), with examples

The CSS :has() pseudo-class is a powerful new feature that lets you style parents, siblings, and more – writing cleaner, more dynamic CSS with less JavaScript.

Daniel Schwarz
Oct 24, 2025 ⋅ 7 min read

Kombai AI: The AI agent built for frontend development

Kombai AI converts Figma designs into clean, responsive frontend code. It helps developers build production-ready UIs faster while keeping design accuracy and code quality intact.

Jude Miracle
Oct 23, 2025 ⋅ 7 min read
View all posts

3 Replies to "Methods for TypeScript runtime type checking"

  1. One big downside to io-ts and similar libraries, is all your types are inferred.

    This has some major drawbacks compared with literal types: there is nowhere for you to write documentation – or at least nothing that will be visible to IDE auto completion or a documentation generator. Also, error messages may be very difficult to understand – they aren’t going to point to a specific member, but instead to a complex stack of derived types. And lastly, no automated (remame) refactorings or “find usages” will be available, so you miss out on a lot of the productivity aspects of TS.

    I had high hopes for this approach, but I eventually ended up writing both validators and proper types anyhow, meaning a lot of duplication. Just something to consider before selecting this approach.

Leave a Reply

Would you be interested in joining LogRocket's developer community?

Join LogRocket’s Content Advisory Board. You’ll help inform the type of content we create and get access to exclusive meetups, social accreditation, and swag.

Sign up now