ky

deep-clones (#861) and so init-hook mutations don't leak across requests, but and are still only shallow-cloned (one level). A nested mutation in a hook (e.g. on a reused ) leaks into subsequent requests. Existing tests only cover top-level mutation, so it's undetected. #861 established the deep-clone-nested-init-hook-structures pattern for ; / were left behind. The fix applies the same isolation (+2 tests). Verified both ways: old leaks the nested mutation, fix isolates it; top-level, Date, and class-instance cases preserved, 0 regression.

The retry documentation describes the header value as a "date, timeout, or timestamp". "timeout" isn't one of the accepted forms. Per the HTTP spec the value is either a delay in seconds or an HTTP date, and ky additionally treats a large number as a Unix timestamp (). So the accurate set is delay / date / timestamp. This replaces the inaccurate "timeout" with "delay" in the readme and the matching JSDoc in . Docs-only, no behavior change.

👋 Bartek from the Deno team here. The install instructions show , but not Deno. Since Deno is a drop-in replacement for npm these days, I'd like to add a Deno line so Deno users have a copy-pasteable command, in parity with the others: (As of Deno 2.8 there's no prefix needed, it's the same command shape as .) Totally fine to close this if you'd rather keep the list short, no hard feelings. Happy to adjust wording, placement, or move it to a docs site instead. _Disclosure: I work on Deno, so I have an interest here. The goal is parity with the package managers you already list, not promotion. This PR was prepared with AI assistance under human supervision: I review every change myself and personally respond to any comments or review feedback._