next 15.6.0-canary.39

v15.6.0-canary.39

on Node.js Yarn

Core Changes

• Update otel test assertions and pages span_name: #84393
• [Breaking] Bump minimum TypeScript version to 5.1.0: #84384
• Upgrade React from d15d7fd7-20250929 to ef889445-20250930: #84383
• [Breaking] Remove deprecated unstable_rootParams: #84373
• [metadata] remove falsy dynamicParams approach: #84405
• fix: next rspack binding NextExternalsPlugin: #84303
• Development: Skip route matching when there is an existing match: #84227
• Revert "auto-enable clientParamParsing and clientSegmentCache w/ cacheComponents": #84419
• Upgrade React from ef889445-20250930 to 548235db-20251001: #84416
• [Breaking] Update default browserslist config: #84401
• Upgrade React from 548235db-20251001 to 1bd1f01f-20251001: #84417
• Allow metadataBase to be a string URL in addition to URL instance: #84297
• Upgrade React from 1bd1f01f-20251001 to 86181134-20251001: #84427
• [mcp] logging file should be reset for each session: #84425

Misc Changes

• Update failing e2e deploy tests: #84395
• Turbopack: Webpack loader this.fs.readFile: #83313
• Improve tests: #84374
• Revamp Next.js boilerplate: #81945
• Add test for twoslash: #84267
• Docs/project structure polish: #84386
• Bump to swc v44: #84420
• Turbopack: don't fail for parse errors in tracing: #84408
• Update Rspack development test manifest: #84365
• Update Rspack production test manifest: #84366

Credits

Huge thanks to @ijjk, @mischnic, @devjiwonchoi, @chloe-yan, @huozhi, @SyMind, @timneutkens, @ztanner, @sireesha-siri, @unstubbable, and @vercel-release-bot for helping!