- Breaking API removals: Deno.FsFile constructor made illegal, rid properties stripped from FsWatcher, network and connection prototypes, and deprecated worker APIs removed.
- Enable BYONM by default with override via nodeModulesDir; LSP now respects nested deno.json for fmt and lint configurations.
- Extensive bug fixes (CLI prompts, test writer deadlock, fs leak checks, HTTP proxying, Node polyfills, TLS EC keys) and performance tweaks for LSP caching, locking, and MediaType allocations.
v1.42.2
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Added an unscoped flag for package aliasing, a members‑only flag for workspace tasks, Blob/Body.textStream() API, and an experimental QuickJS backend.
Added HMR support for React Router on desktop, new length/byteLength parameters for Buffer searches, raw ChaCha20 cipher support, and upgraded V8 to 150.2.0.