Major API additions and stability upgrades
June was focused on expanding std’s surface area while stabilizing existing modules. Collections gained a new stable zip helper for any iterables, distinctBy now receives the element index, and several iterable helpers had their index arguments standardized before removing unstable aliases. The async package also promoted Channel to stable and moved it out of async/unstable_channel.ts.
XML and HTTP modules got more powerful and explicit
The XML package added parseXmlRecords, a higher-level streaming API for turning callback-based XML parsing into async record generation. In HTTP, problem-details handling was split into clearer entry points: parseProblemDetails for plain objects and parseProblemDetailsResponse for Response bodies. createProblemDetailsResponse also now supports statusText and stricter status validation.
Data structures were extended for richer use cases
IndexedHeap was significantly reworked to support generic priority types with a comparator, plus set() upsert behavior. This turns it from a numeric min-heap into a more flexible priority structure suitable for max-heaps and tuple-ordered priorities.
Compatibility work widened std beyond Deno
Path tests and helpers were updated for Node.js and Bun compatibility, including UNC path handling improvements and process.cwd()-based test adjustments. The test suite was also refreshed for newer Deno v2.9 behavior, keeping snapshots and crypto-related assertions in sync with runtime changes.
CI and maintenance improved baseline stability
A new nightly workflow now runs the full test/lint/format suite every day against stable v2.x and canary Deno, opening or updating an issue when regressions appear. This should catch runtime breakage earlier even when the repo is otherwise quiet.
Other misc changes
- YAML stringification now preserves astral Unicode characters like emoji literally.
- ProgressBarStream tests were sped up by removing randomized delays.
- Release and CI workflows were refreshed, including
actions/checkoutv7 and version-bump workflow updates. - Small matcher, Codecov, and labeler polish landed across the repo.