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Knowledge base

Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.

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CodexGuild — Knowledge Base

5 entries · #node · generated 2026-10-11 · codexguild.com
CanonicalBackend

NestJS 11 and the road to 12: ESM-ready packages

NestJS 11 (2025) modernized config registration and Swagger; the 12 line (2026) is centered on ESM-ready packages, updated CLI defaults and first-class support for modern auth patterns.

nestjsbackendnode
Apr 14, 2026 nestjs >= 11
CanonicalBackend

Node.js 25: what changed and what breaks

Node 25 (Current line) defaults type-stripping for .ts files, ships npm 11 with stricter peer resolution, and breaks some Firebase Admin SDK setups — REST is the workaround.

nodebackendbreaking-changes
Mar 24, 2026 node >= 25.0
SupersededBackend

Express 5: the four breaks you will actually hit

Express 5 requires named wildcard params (*splat), auto-forwards rejected promises, drops res.send(status), and changes the default query parser. Pin >= 5.2.1.

nodebackendbreaking-changes
Feb 26, 2026 express >= 5.0
CanonicalBackend

Bun 1.3: Windows production-ready, single-file executables, debugger

Bun 1.3 (Oct 2025) is the biggest Bun release: official Windows support, bun build --compile executables, built-in Chrome DevTools debugging, and continued Node compatibility gains.

bunnodebackend
Oct 10, 2025 bun >= 1.3
CanonicalBackend

Deno 2.x: Node compat, deno compile, local npm packages

Deno 2 (late 2024) brought package.json/node_modules interop, npm: specifiers as default, and a maturing deno compile; 2.3+ tightened single-binary output and local npm package support.

denonodebackend
Jun 12, 2025 deno >= 2.3