Deno v2.3.6 — Release Notes & Engineering Impact

### 2.3.6 / 2025.06.12 Upgrade to 2.3.6: ``` deno upgrade ``` Or install for the first time ``` curl -fsSL https://deno.land/install.sh | sh ``` - feat(bundle, unstable): bundling backed by esbuild (#29470) - feat(ext/fetch): add support for fetch on vsock sockets (#29692) - feat(unstable): add --unstable-node-conditions flag for node resolution (#29586) - feat(unstable): deploy subcommand (#29407) - fix(bundle): don't panic on broken pipe (#29706) - fix(bundle): fix handling of multiple entrypoints (#29651) - fix(bundle): pass requested module type to load (#29683) - fix(bundle): rework how patterns for externals are handled (#29680) - fix(compile): skip over read_dir errors when finding node_modules directories (#29672) - fix(coverage): `deno test --coverage` fails when importing modules from `data:` urls (#29607) - fix(ext/http): handle vsock streams in `extract_network_stream` (#29518) - fix(ext/node): Buffer.fill compatibility fixes (#29525) - fix(ext/node): Fix missing core_import_map node internal file path for http2 (#29644) - fix(ext/node): `process.loadEnvFile` returns `undefined` (#29717) - fix(ext/node): add back perf_hooks.markResourceTiming (#29562) - fix(ext/node): add events `getMaxListeners` (#29636) - fix(ext/node): disable `parallel/test-crypto-secure-heap.js` test (#29658) - fix(ext/node): enable `Buffer` pool for strings (#29592) - fix(ext/node): export StatementSync from `node:sqlite` (#29563) - fix(ext/node): fix `Buffer.inspect` compatiblity (#29617) - fix(ext/node): fix `EventEmitter.on` (#29682) - fix(ext/node): fix addAbortListener (#29634) - fix(ext/node): fix buffer.includes edge cases (#29591) - fix(ext/node): fix buffer.indexOf for ucs2 encoding (#29593) - fix(ext/node): fix events.getEventListeners (#29685) - fix(ext/node): fix fs.watchFile trigger (#29659) - fix(ext/node): fix inspect of CustomEvent of Node.js (#29668) - fix(ext/node): fix prototype of asymmetricKeyDetails of AsymmetricKeyObject (#29576) - fix(ext/node): fix validation of input in setMaxListeners (#29630) - fix(ext/node): handle -p flag in spawn, fix "from dependency" check in windows (#29611) - fix(ext/node): ignore `parallel/test-eventsource-disabled.js` test (#29618) - fix(ext/node): improve getaddrinfo compatibility (#29501) - fix(ext/node): internal getOpenSSLSecLevel() for tests (#29657) - fix(ext/node): make Buffer work with resizable ABs (#29578) - fix(ext/node): make DatabaseSync `readOnly` optional (#29564) - fix(ext/node): make conditional exports work in `require()` (#29640) - fix(ext/node): mark pool `ArrayBuffer` as untransferable (#29612) - fix(ext/node): match WebCrypto tag too small error msg with Node (#29654) - fix(ext/node): pass node.js specific flags via NODE_OPTIONS env var in spawn (#29600) - fix(ext/node): print warnings to stderr (#29527) - fix(ext/node): return `undefined` instead of `null` in sqlite (#29567) - fix(ext/node): support 2nd arg of `EventEmitter.prototype.listenerCount` (#29664) - fix(ext/node): support DEP0005 deprecation warning (#29530) - fix(ext/node): update decipherIv error properties (#29652) - fix(ext/node): update interaction between event emitters and domains (#29632) - fix(ext/node): update message for `MaxListenersExceededWarning` (#29613) - fix(ext/node): use primordials in `ext/node/polyfills/_fs/_fs_symlink.ts` (#29547) - fix(ext/node): use primordials in `ext/node/polyfills/internal/console/constructor.mjs` (#29605) - fix(ext/node): use primordials in `ext/node/polyfills/internal/fs/streams.mjs` (#29643) - fix(ext/node): use primordials in `ext/node/polyfills/internal/process/per_thread.mjs` (#29550) - fix(ext/node): use primordials in `ext/node/polyfills/internal/util/inspect.mjs` (#29691) - fix(ext/node): use primordials in `ext/node/polyfills/internal_binding/stream_wrap.ts` (#29542) - fix(ext/node): validate prime bigint candidate (#29653) - fix(ext/node): validate randomUUID() options (#29656) - fix(ext/node): various `node:sqlite` fixes (#29404) - fix(ext/os): silently ignore invalid utf-8 characters in os vars (#29571) - fix(ext/web): fix property configuration of event phase fields (#29635) - fix(fmt): allow omission of semicolon in certain cases in css template (#29687) - fix(fmt): fix line number in error message when syntax error thrown from external formatter (#29698) - fix(install): bust packument cache on version not found when loading extra info from lockfile (#29679) - fix(install): clean-up lock poll file for a more deterministic `node_modules` folder output (#29623) - fix(lsp): use canonicalized fallback filesystem root (#29566) - fix(node/assert): throw on deepStrictEqual({}, Object.create(null)) (#29428) - fix(otel): set timestamp on opentelemetry log records (#28625) - fix(process,node): roll our own process spawning on windows (#29609) - fix(test): handle snippet containing `Deno.test` in doc test (#29631) - fix(unstable): continue to deserialize patches field from lockfile (#29714) - fix(unstable): rename "patch" property to "links" (#29677) - fix(zlib): don't return a smi from crc32 (#29546) - fix: remove WorkerGlobalScope from global middleware (#29543) - fix: revert back to prefering highest previously resolved version for a req (#29642) - fix: support virtio vsock only on systems on which it is available (remainder) (#29709) - perf(process): make sure we can take process spawning fast path on unix (#29573)