Impact Score: 5/10
Deno v1.37.0 โ Release Notes & Engineering Impact
Source available โ automated, not human-reviewed
Component: deno ยท Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
โก Executive Summary (TL;DR)
Deno v1.37.0. Source highlight: feat: Add "deno jupyter" subcommand (#20337, #20552, #20530, #20537, #20546)
Who Does This Impact? (Role-Based Analysis)
๐ป Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
๐ Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
โ๏ธ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
โจ New Features & Capabilities (6)
- feat: Add "deno jupyter" subcommand (#20337, #20552, #20530, #20537, #20546)
- feat(test): add TAP test reporter (#14390, #20073)
- feat(ext/node): http2.connect() API (#19671)
- feat(ext/web): Add name to `Deno.customInspect` of File objects (#20415)
- feat(lint): `--rules` print all rules (#20256)
- feat(lockfile): add redirects to the lockfile (#20262)
โก Performance & Enhancements (6)
- perf(ext/http): optimize `set_response` for small responses (#20527)
- perf(ext/node): Optimise Buffer string operations (#20158)
- perf(ext/streams): optimize async iterator (#20541)
- perf(node/net): optimize socket reads for 'npm:ws' package (#20449)
- perf: improve async op santizer speed and accuracy (#20501)
- perf: make `deno test` 10x faster (#20550)
๐ง Bug Fixes & Patches (6)
- fix(cli): ensure that an exception in getOwnPropertyDescriptor('constructor')
- fix(cli): for main-module that exists in package.json, use the version defined
- fix(compile): support providing flags as args (#20422)
- fix(evt/kv): Add serde feature to uuid (#20350)
- fix(ext/crypto): remove EdDSA alg key checks and export (#20331)
- fix(ext/http): create a graceful shutdown API (#20387)
๐ View Raw Release Notes (Original Developer Log)
### 1.37.0 / 2023.09.19
- feat: Add "deno jupyter" subcommand (#20337, #20552, #20530, #20537, #20546)
- feat(test): add TAP test reporter (#14390, #20073)
- feat(ext/node): http2.connect() API (#19671)
- feat(ext/web): Add name to `Deno.customInspect` of File objects (#20415)
- feat(lint): `--rules` print all rules (#20256)
- feat(lockfile): add redirects to the lockfile (#20262)
- feat(lsp): WorkspaceSettings::disablePaths (#20475)
- feat(lsp): enable via config file detection (#20334, #20349)
- feat(lsp): include source in auto import completion label (#20523)
- feat(lsp): npm specifier completions (#20121)
- feat(lsp): provide the deno.cache command server-side (#20111)
- feat(lsp): update imports on file rename (#20245)
- feat(test): Add Deno.test.ignore and Deno.test.only (#20365)
- feat(unstable): package manager (#20517)
- feat: TypeScript 5.2 (#20425)
- feat: explicit resource management in TypeScript (#20506)
- feat: lockfile v3 (#20424)
- feat: support import attributes (#20342)
- fix(cli): ensure that an exception in getOwnPropertyDescriptor('constructor')
doesn't break Deno.inspect (#20568)
- fix(cli): for main-module that exists in package.json, use the version defined
in package.json directly (#20328)
- fix(compile): support providing flags as args (#20422)
- fix(evt/kv): Add serde feature to uuid (#20350)
- fix(ext/crypto): remove EdDSA alg key checks and export (#20331)
- fix(ext/http): create a graceful shutdown API (#20387)
- fix(ext/http): ensure aborted bodies throw (#20503)
- fix(ext/kv): add a warning for listenQueue if used with remote KV (#20341)
- fix(ext/kv): same `expireIn` should generate same `expireAt` (#20396)
- fix(ext/node): implement AES GCM cipher (#20368)
- fix(ext/node): remove unnecessary and incorrect type priority_t (#20276)
- fix(ext/node/ops/zlib/brotli): Allow decompressing more than 4096 bytes
(#20301)
- fix(fmt/markdown): improve ignore comment handling (#20421)
- fix(init): skip existing files instead of erroring (#20434)
- fix(lsp): always enable semantic tokens responses (#20440)
- fix(lsp): force correct media type detection from tsc (#20562)
- fix(lsp): include JSON modules in local import completions (#20536)
- fix(lsp): match enable_paths by whole path components (#20470)
- fix(lsp): pass quote preference to tsc (#20547)
- fix(lsp): prefer local auto-import specifiers (#20539)
- fix(lsp): properly handle disabled configuration requests (#20358)
- fix(lsp): recreate npm search cache when cache path changes (#20327)
- fix(lsp): refresh npm completions on each character (#20565)
- fix(lsp): respect configured exclusions for testing APIs (#20427)
- fix(lsp): restore tsc's quick fix ordering (#20545)
- fix(lsp): sort quickfix actions (#17221)
- fix(node): Bump hardcoded version to latest (#20366)
- fix(node/child_process): don't crash on undefined/null value of an env var
(#20378)
- fix(node/http): correctly send `Content-length` header instead of
`Transfer-Encoding: chunked` (#20127)
- fix(npm): properly handle legacy shasum of package (#20557)
- fix(runtime/permissions): Resolve executable specifiers in allowlists and
queries (#14130)
- fix(test): apply filter before checking for "only" (#20389)
- fix(test): share fail fast tracker between threads (#20515)
- fix: `Deno.Command` - improve error message when `cwd` is not a directory
(#20460)
- fix: don't show filtered test suites as running (#20385)
- fix: empty include in config file excludes all (#20404)
- fix: exclude internal JS files from coverage (#20448)
- fix: init v8 platform once on main thread (#20495)
- fix: output traces for op sanitizer in more cases (#20494)
- perf(ext/http): optimize `set_response` for small responses (#20527)
- perf(ext/node): Optimise Buffer string operations (#20158)
- perf(ext/streams): optimize async iterator (#20541)
- perf(node/net): optimize socket reads for 'npm:ws' package (#20449)
- perf: improve async op santizer speed and accuracy (#20501)
- perf: make `deno test` 10x faster (#20550)