Major API growth and stabilization
Collections and async APIs got sharper
zip is now a stable helper for any iterables, distinctBy now receives the element index, and several iterable helpers standardized index arguments while dropping unstable aliases. Channel also graduated to a stable home in async/channel.ts.
IndexedHeap became a more general priority structure
IndexedHeap now accepts generic priority types with a comparator and adds set() upsert behavior, letting it model max-heaps and tuple-ordered heaps instead of only numeric min-heaps.
XML gained record-oriented streaming
A new parseXmlRecords API turns callback-driven XML parsing into an async-generator workflow for assembling higher-level records, extending the package beyond tree parsing and low-level callbacks.
HTTP problem-details parsing was split and hardened
The problem-details module now separates object parsing from Response parsing, and createProblemDetailsResponse gained statusText support with stricter status validation. This is the week’s clearest public API reshaping.
Compatibility and reliability improvements
Path utilities are behaving better across runtimes
path coverage expanded under Node and Bun, with fixes for process.cwd() test usage and toFileUrl handling of UNC-style paths. That should reduce cross-runtime surprises for downstream users.
Nightly CI now watches stable and canary Deno A new scheduled workflow runs the full suite daily against both stable v2.x and canary, opening or updating an issue on failure so regressions are caught sooner.
YAML output preserves emoji and astral characters The YAML dumper now iterates by Unicode code point, so astral characters like emoji are emitted literally instead of being escaped as surrogate halves.
Other misc changes
promptSelect()now guarantees at least one visible item on tiny terminals.- Tests were updated for Deno v2.9 behavior and newer snapshot/assert APIs.
- CI/release tooling received maintenance updates, including
actions/checkoutv7 and version-bump workflow changes.