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TypeScript Users: How often do you encounter implicit any introduced by the type system? Not the introduction by user code, but the type system returning any for something it shouldn’t.

cc @mariusschulz

Not at all, thanks to --noImplicitAny!

To elaborate on that, I would recommend enabling --strict to get the most value out of TypeScript’s type system. I’m a fan of as much strictness as possible. This is usually easier to achieve in greenfield projects but worth working towards to in projects being migrated from JS.

I'd recommend against that as it will make it much harder to write the code especially when you use a lot of 3rd party dependencies. Most of the types can safely be casted to any.

I use strict mode and never had any issues. Most libraries have type definitions and if some don't, I write the definitions for the APIs I'm going to use. It's a bit more work, but worth it for the DX improvement and typesafety.

"I use X and never had issue" is always an irrelevant argument. Most of the libraries actually do not have definitions or are outdated. If there are definitions we both can use them, but I will not care that much if there are not.