[btown]

So yes, it's a TUI... but it's a TUI rendered by Ink, a React library, with a full JS runtime in the background. The number of re-renders per unit time involved with rerendering a JS implementation of flexbox every new token comes in? That's not a walk in the park for a garbage collector, and a single memory/retention leak can cascade dramatically.

I imagine this is part of the impetus behind the Bun acquisition - they have a deep need to push optimization efforts towards the specific patterns that are most relevant to their use cases. (Which are probably good ones for the broader Bun userbase, to be sure, but relative prioritization is something they now have greater control over.)