v15.4.0-canary.17

Core Changes

• Upgrade loader-utils v2 to latest patch: #78707
• [Link] Add prefetch="auto" option: #78689
• [build-sourcemaps] Ensure errors during prerender can be sourcemapped: #78709
• Upgrade React from 5dc00d6b-20250428 to 408d055a-20250430: #78715
• build: Fix minifier options for webpack builds: #78717
• refactor(next-swc): Do not amend minifier options from Rust code: #78719
• Change stylistic ESLint TypeScript defaults: #78679
• fix: replace original request body after middleware execution: #77662

Misc Changes

• test: migrate svgo webpack test: #78704
• fix(turbopack): Provide full path to SWC Wasm plugins: #78637
• Revert "[next-lint] test: remove eslint config snapshot testing": #77824
• Turbopack: initially shard SST files: #78652
• Turbopack: reduce max coverage for compaction: #78649
• chore(turbopack): Bump rustc-hash from 2.1.0 to 2.1.1: #78721
• Turbopack: make_task_dirty only needs meta data: #78699
• chore(CI): Line-wrap afterBuild blocks in build_and_test.yml: #78718
• chore(CI): Re-run pnpm install after pnpm build in build_reusable.yml: #78720

Credits

Huge thanks to @huozhi, @kdy1, @acdlite, @devjiwonchoi, @eps1lon, @sokra, @bgw, @ijjk, and @kevva for helping!