next 15.6.0-canary.42

v15.6.0-canary.42

on Node.js Yarn

Core Changes

• telemetry track mcp server usage: #84471
• simplify the way we check for turbopack config to ensure we support an empty turbopack object: #84494
• perf: Use synchronous IO when cleaning distDir in next dev and next build: #84472
• Make turbopack the default bundler for custom servers: #84281
• [segment cache]: fix interception route handling: #84497
• Upgrade React from a757cb76-20251002 to 85c427d8-20251003: #84496

Misc Changes

• fix: Missing link in Lazy Loading docs: #84473
• docs: simplify streaming metadata: #84253
• make withRspack idempotent: #84482
• Turbopack: Use strongly consistent reads in random_change unit test: #84505

Credits

Huge thanks to @huozhi, @joao4xz, @icyJoseph, @lukesandberg, @bgw, and @ztanner for helping!