Changelog

denoland/deno · · 10 commits

Node compat gets faster and less flaky

Windows named pipes retry correctly, lazy-loading trims startup cost, and several Node module resolution bugs are fixed.

bartlomieju dsherret divybot nathanwhit

Windows named-pipe connects now retry when busy (bartlomiejufe040fc)

Deno now mirrors libuv on Windows when a named pipe is temporarily unavailable, retrying ERROR_PIPE_BUSY via WaitNamedPipeW instead of surfacing connect EINVAL. This fixes intermittent Docker/testcontainers failures and makes pipe error translation more faithful to Node/libuv expectations.

Node hooks now resolve through Deno’s resolver (bartlomieju0f47a9e)

When module.register() activates Node’s loader hooks, defaultResolve() now uses Deno’s own resolution result instead of a naive URL parse. That preserves import maps, JSR, and npm resolution for mapped specifiers and avoids Loading unprepared module failures in apps that rely on loader hooks.

npmrc gains min-release-age support (dsherret271a8a7)

Deno now parses npm’s min-release-age setting and carries it through resolver/installer config paths. This lets installs honor release-age gating for package selection, matching npm’s behavior more closely.

Lazy-loading expands to more Node polyfills (bartlomiejua38610c, bartlomiejua567a4e)

The Node compat layer moves the _stream_*, net, and TLS polyfills onto the lazy-loaded JS path, reducing eager startup work. This is a sizable performance/refactor change that should improve cold-start behavior for users who don’t touch these modules.

Lazy ESM modules now evaluate before namespace reuse (bartlomiejua72f4c5)

A core lazy-load bug is fixed where a module already instantiated in V8’s module map could be returned before evaluation, leaving export const bindings in the TDZ. The fix forces evaluation first and prevents Cannot access 'X' before initialization errors in sibling lazy-module scenarios.

deno install --global --force now refreshes stale lockfiles (nathanwhit7a7b8d6)

Global installs with --force/--reload now remove the auto-generated lockfile before resolving dependencies, so a fresh install really is fresh. This fixes cases where the old pinned version kept winning during reinstallation.

TLS secure-context errors now match OpenSSL shape (divybot1298e48)

tls.createSecureContext() now throws the expected OpenSSL-shaped error when clientCertEngine is used. That unblocks Node compatibility tests and improves parity for code that inspects TLS error details.

Process report omits glibc fields off glibc Linux (divybot2c92763)

process.report() now only includes glibcVersionRuntime/glibcVersionCompiler on Linux builds linked against glibc. This restores libc-flavor detection on musl and non-Linux platforms.

Other misc changes

  • CI workflow security tweak: switch PR workflow trigger from pull_request_target to pull_request (dsherretbe35920).