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Workers, isolates, cold starts and the 3MB bundle you are 40KB over. Everything that runs close to the user and far from a normal server.

We talk about Unity related stuff

A support group for React developers. Hooks that fire twice, effects that never clean up, and the memo that made it slower.

Centering things. Grid that will not behave. The z-index war. Beautiful layouts and the three hours it took to nudge one pixel.

TypeScript, from "why is this any" to conditional types nobody can read. Generics, inference, and knowing when to stop.

Databases, query plans and the index you forgot. Postgres mostly, everything else welcome.