Deno v1.15.0 — Release Notes & Engineering Impact

Source available — automated, not human-reviewed

Component: deno · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

📄 .MD

✨ Features 6 ⚡ Improvements 6 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Deno v1.15.0. Source highlight: feat: add --compat flag to provide built-in Node modules (#12293)

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

✨ New Features & Capabilities (6)

feat: add --compat flag to provide built-in Node modules (#12293)
feat: provide ops details for ops sanitizer failures (#12188)
feat: Show the URL of streaming WASM modules in stack traces (#12268)
feat: Stabilize Deno.kill and Deno.Process.kill (#12375)
feat: stabilize Deno.resolveDns (#12368)
feat: stabilize URLPattern API (#12256)

⚡ Performance & Enhancements (6)

perf(core): use opcall() directly (#12310)
perf(fetch): fast path Uint8Array in extractBody() (#12351)
perf(fetch): optimize fillHeaders() key iteration (#12287)
perf(web): ~400x faster http header trimming (#12277)
perf(web): optimize byteLowerCase() (#12282)
perf(web/Event): move last class field to constructor (#12265)

🔧 Bug Fixes & Patches (6)

fix: Don't panic when a worker is closed in the reactions to a wasm operation (#12270)
fix: worker environment permissions should accept an array (#12250)
fix(core/runtime): sync_ops_cache if nuked Deno ns (#12302)
fix(ext/crypto): decode id-RSASSA-PSS with default params (#12147)
fix(ext/crypto): key generation based on AES key length (#12146)
fix(ext/crypto): missing Aes key typings (#12307)

📄 View Raw Release Notes (Original Developer Log)

### 1.15.0 / 2021.10.12 - feat: add --compat flag to provide built-in Node modules (#12293) - feat: provide ops details for ops sanitizer failures (#12188) - feat: Show the URL of streaming WASM modules in stack traces (#12268) - feat: Stabilize Deno.kill and Deno.Process.kill (#12375) - feat: stabilize Deno.resolveDns (#12368) - feat: stabilize URLPattern API (#12256) - feat: support serializing `WebAssembly.Module` objects (#12140) - feat(cli/uninstall): add uninstall command (#12209) - feat(ext/crypto): decode RSAES-OAEP-params with default values (#12292) - feat(ext/crypto): export spki for RSA (#12114) - feat(ext/crypto): implement AES-CBC encryption & decryption (#12123) - feat(ext/crypto): implement deriveBits for ECDH (p256) (#11873) - feat(ext/crypto): implement deriveKey (#12117) - feat(ext/crypto): implement wrapKey (#12125) - feat(ext/crypto): support importing raw ECDSA keys (#11871) - feat(ext/crypto): support importing/exporting raw AES keys (#12392) - feat(ext/ffi): add support for buffer arguments (#12335) - feat(ext/ffi): Non-blocking FFI (#12274) - feat(ext/net): relevant errors for resolveDns (#12370) - feat(lint): add support for --watch flag (#11983) - feat(runtime): allow passing extensions via Worker options (#12362) - feat(runtime): improve error messages of runtime fs (#11984) - feat(tls): custom in memory CA certificates (#12219) - feat(unstable/test): imperative test steps API (#12190) - feat(web): Implement `DOMException`'s `stack` property (#12294) - fix: Don't panic when a worker is closed in the reactions to a wasm operation (#12270) - fix: worker environment permissions should accept an array (#12250) - fix(core/runtime): sync_ops_cache if nuked Deno ns (#12302) - fix(ext/crypto): decode id-RSASSA-PSS with default params (#12147) - fix(ext/crypto): key generation based on AES key length (#12146) - fix(ext/crypto): missing Aes key typings (#12307) - fix(ext/crypto): use NotSupportedError for importKey() (#12289) - fix(ext/fetch): avoid panic when header is invalid (#12244) - fix(ext/ffi): don't panic in dlopen (#12344) - fix(ext/ffi): formatting dlopen errors on Windows (#12301) - fix(ext/ffi): missing "buffer" type definitions (#12371) - fix(ext/ffi): types for nonblocking FFI (#12345) - fix(ext/http): merge identical if/else branches (#12269) - fix(ext/net): should not panic when listening to unix abstract address (#12300) - fix(ext/web): Format DOMException stack property (#12333) - fix(http): don't expose body on GET/HEAD requests (#12260) - fix(lsp): lint diagnostics respect config file (#12338) - fix(repl): avoid panic when assigned to globalThis (#12273) - fix(runtime): Declare `Window.self` and `DedicatedWorkerGlobalScope.name` with `util.writable()` (#12378) - fix(runtime): don't equate SIGINT to SIGKILL on Windows (#12356) - fix(runtime): Getting `navigator.hardwareConcurrency` on workers shouldn't throw (#12354) - fix(runtime/js/workers): throw errors instead of using an op (#12249) - fix(runtime/testing): format aggregate errors (#12183) - perf(core): use opcall() directly (#12310) - perf(fetch): fast path Uint8Array in extractBody() (#12351) - perf(fetch): optimize fillHeaders() key iteration (#12287) - perf(web): ~400x faster http header trimming (#12277) - perf(web): optimize byteLowerCase() (#12282) - perf(web/Event): move last class field to constructor (#12265) - perf(webidl): fix typo from #12286 (#12336) - perf(webidl): inline ResponseInit converter (#12285) - perf(webidl): optimize createDictionaryConverter() (#12279) - perf(webidl): optimize createRecordConverter() (#12286) - perf(webidl/DOMString): don't wrap string primitives (#12266) Release notes for std version 0.111.0: https://github.com/denoland/deno_std/releases/tag/0.111.0

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