[eitland]

If you are doing mainstream frontend work and haven't yet moved to TypeScript, that would be my first recommendation.

[patchorang]

I'm just getting into frontend. Any recommended typescript courses/material?

[eitland]

At some point a few years ago I learned a lot from Maximilian Schwartzmuller on Udemy (https://www.udemy.com/user/maximilian-schwarzmuller/).

Edit: I think I watched both the Angular course (after having used Angular for a while) and the React with TypeScript course (at the time I transitioned to React).

And with Udemy for the last few years, one can always just wait a few days and get the course at 90% off.