Effect fixes your TypeScript

A series on the bugs you already ship in plain TypeScript, and how Effect makes them impossible to write. Functions that hide how they fail, try/catch that swallows every error’s name, retry loops with three bugs, Promise.all that floods your own API, timeouts that cancel nothing, leaked database connections, unchecked casts, and environment variables that turn into NaN.

Each part is one bug and one fix, side by side, in about a minute. It starts from async/await, so you need no Effect background, and it ends with the honest part: when you should not use Effect at all.