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Every single time I add comments, they instantly become obsolete.

👨‍💻 Follow along for daily programming memes!

TypeScript inference finding 👀

Inline checks narrow correctly, but extracted predicates can fall back to `=> boolean`, losing child refinement on reuse.

is-kit keeps it with `and()` + `refineKey()`.

Grilled Cheese is a product of Village Compute

Version devBuilt at: 2026-10-11 02:37:10 EDT

Every single time I add comments, they instantly become obsolete.

👨‍💻 Follow along for daily programming memes!

TypeScript inference finding 👀

Inline checks narrow correctly, but extracted predicates can fall back to `=> boolean`, losing child refinement on reuse.

is-kit keeps it with `and()` + `refineKey()`.