v15.4.0-canary.92

Core Changes

• [devtools] Fix Turbopack indicator: #80753
• Downgrade React from 79d9aed7-20250620 to 197d6a04-20250424: #80762
• devtools: couple restart dev server UI with persistent cache flag: #80751
• [devtools] panel ui responsiveness: #80732

Misc Changes

• fix(turbopack): Do not run inject_helpers pass multiple times: #80755
• fix: fixed merge driver output, does not expect debugging messages to output on stdout: #80736

Credits

Huge thanks to @eps1lon, @kdy1, @wyattjoh, @ztanner, and @devjiwonchoi for helping!

v15.4.0-canary.91

Core Changes

• perf(next-swc): Remove needless JSON conversion: #80671

Credits

Huge thanks to @kdy1 for helping!

v15.4.0-canary.90

Core Changes

• chore(swc-wasm): Fix and clean up various issues with swc-wasm tests: #80471
• Add onBuildComplete adapter hook: #80446
• [ppr] RDC for RSCs: #79638
• docs: add csp and content disposition type: #80735
• omit searchParam data from FlightRouterState before transport: #80734
• feat(turbopack): Print a warning about performance when starting with an invalidated cache: #80631

Misc Changes

• [turbopack] Reduce indirection in turbo-tasks dispatching: #80695
• [turbopack] Reorganize the fields in LocalTaskType to avoid an allocation: #80738

Credits

Huge thanks to @bgw, @lukesandberg, @ijjk, @wyattjoh, @sommeeeer, and @ztanner for helping!

v15.4.0-canary.89

Core Changes

• fix: rspack code analyzer should only handle javascript module: #80711
• [devtools] port call stack: #80550
• [devtools] port runtime error handling to hook: #80567
• Upgrade React from 79d9aed7-20250620 to 06e89951-20250620: #80730

Misc Changes

• add git merge driver for errors.json: #80722
• Update Rspack development test manifest: #80705
• Update Rspack production test manifest: #80704
• Update Turbopack development test manifest: #80707
• Update Turbopack production test manifest: #80706
• Turbopack: Allow distdir in project directory, outside of the application: #80683

Credits

Huge thanks to @lubieowoce, @SyMind, @devjiwonchoi, and @timneutkens for helping!

v15.4.0-canary.88

Core Changes

• overwrite redirect SSG meta.status to 200 for RSC requests: #80391
• [devtools] panel ui header: #80509
• [development-server] Display pid of already-running process that is using port: #80069
• [devtools] panel ui footer: #80515
• Fix Next DevTools Storybook in recent Node.js versions: #80713
• [devtools] set up panel ui tab infra: #80535
• [devtools] port devtools scale to dispatcher: #80537
• [devtools] panel ui settings tab: #80538
• Upgrade React from 197d6a04-20250424 to 79d9aed7-20250620: #79477

Misc Changes

• refactor(turbopack): Refactor turbo-tasks-fs to take &self instead: #80633
• [test] Reduce flakiness of instrumentation-order: #80712
• [test] Add repro for SSR bug when large chunks are deferred in Flight: #80661

Credits

Huge thanks to @gaojude, @devjiwonchoi, @msabramo, @kdy1, and @eps1lon for helping!

v15.4.0-canary.87

Core Changes

• [devtools] port overlay backdrop out of overlay: #80460
• Revert "(E2E) Log which config file is used for next start": #80666
• fix(turbopack): Fix static immutability analysis: #80646
• [devtools] add panel ui placeholder under feature flag: #80354
• [devtools] add dialog behavior to panel ui: #80355
• Add --debug-prerender option for next build: #80667
• [devtools] port devtools-indicator position to dispatcher: #80536
• fix: mark the shared cache controls as external so it's memory is shared: #80588
• [devtools] apply draggable to panel ui: #80517
• Apply normalizers for init URL used for handlers: #80694

Misc Changes

• Update Rspack development test manifest: #80644
• Prevent typescript errors in IDE for newly generated tests (part 2): #80664
• Update Turbopack development test manifest: #80679
• Show string values for configured experimental features: #80686
• fix: server actions should fetch from the router canonicalUrl: #80690
• test: improve action test reliability: #80587
• [turbopack] Simplify the implementations of TaskOutput::try_from_raw_vc: #80689

Credits

Huge thanks to @devjiwonchoi, @gaojude, @kdy1, @unstubbable, @ztanner, @wyattjoh, @ijjk, and @lukesandberg for helping!

v15.4.0-canary.86

Core Changes

• feat: rspack use swc to warn for edge runtime: #80485
• Avoid timeout error when transformed params are passed to "use cache": #80463
• Respond with 404 for unknown server actions: #80613
• [segment explorer] single row layout segment: #80576
• Fix: Rules of Hooks violation in AppRouter: #80623
• fix: Add Chrome-ligthouse to htmlLimitedBots: #80656
• Turn on clientSegmentCache during PPR CI runs: #80581

Misc Changes

• [turbopack] Merge identical match cases: #80630
• perf(turbopack): Load is_immutable flag dynamically: #80506
• chore(turbo-tasks): Remove unused deprecated methods from manager: #80594
• chore(turbopack): Dedupe rustls dependencies by updating reqwest: #80632
• Add test cases without generateStaticParams to fallback-shells suite: #80462
• feat(turbopack): externalType support global: #80542
• Docs: Remove reference to deleted experimental turbotrace feature: #80572
• Docs: Update code snippets in linking and navigating guide: #80652
• Update Turbopack development test manifest: #80647

Credits

Huge thanks to @lukesandberg, @kdy1, @bgw, @SyMind, @unstubbable, @fireairforce, @KkOoSsTtAa, @huozhi, @acdlite, and @icyJoseph for helping!

v15.3.4

Note

This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• [metadata] render streaming metadata on the top level (#80566)
• [fix] clone the config module to avoid mutation (#80573)

Credits

Huge thanks to @huozhi for helping!

v15.4.0-canary.85

Core Changes

• fix: Rspack dev gets stuck after removing a page: #80555
• Ensure custom relative distDir resolves properly: #80569
• fix: mark file system incremental cache as external so it's memory is shared: #80586
• [fix] clone the config module to avoid mutation: #80573
• Improve Incremental Cache Locking Algorithm: #80497
• [devtools] add feature flag for new panel ui: #80251
• [devtools] fork devtools-indicator: #80456
• [devtools] fork next-logo: #80457
• guarantee cache busting param correctness: #80381
• Normalize filepaths when parsing patterns from js values: #80511

Misc Changes

• perf(turbopack): Introduce runtime analysis for immutable tasks: #80422
• perf(turbopack): Do not allocate vectors if we are not going to use it: #80504
• test: fix failures caused by format discrepancies between rspack and other bundlers: #80314
• perf(turbopack): Detect more immutable tasks: #80423
• docs: streaming metadata, dynamic pages and generateMetadata: #80453
• Turbopack: correct export usage in EcmascriptModulePartReference: #80526
• Turbopack: make another callback return a result: #80608
• Remove turbo_tasks::function from AssetContext::layer: #80592
• build(turbopack): Update swc_core to v27.0.6: #80626
• Update Rspack production test manifest: #80598
• Update Turbopack production test manifest: #80600
• Update Turbopack development test manifest: #80599
• Update Rspack development test manifest: #80597
• Turbopack: resolve sourceMap.file: #80625
• perf(turbopack): Mark async fns without await as non-async: #80628

Credits

Huge thanks to @kdy1, @ScriptedAlchemy, @SyMind, @icyJoseph, @mischnic, @ijjk, @wyattjoh, @huozhi, @devjiwonchoi, @lukesandberg, and @gaojude for helping!

v15.4.0-canary.84

Misc Changes

• docs: fix typo: #80549
• Fix small grammar error in searchParams section: #80548
• docs: fix a typo in static-exports.mdx: #80541
• docs: fix typos: #80503
• docs: fix typo: #80500
• docs: fix typo: #80501
• Docs IA 2.0: Delete routing section, add BFF guide, polish getting started: #80365
• Turbopack Build: Refactor browserslist CSS test to not use .next folder: #80571
• Explain how to use searchParams prop: #80579
• Update Turbopack development test manifest: #80563
• [turbopack] Simplify Request::parse(Pattern) the recursive portion doesn't need to be async: #80510
• Update Rspack development test manifest: #80560
• Update Rspack production test manifest: #80561
• Update Turbopack production test manifest: #80562

Credits

Huge thanks to @sajadtorkamani, @bobziroll, @lumirlumir, @delbaoliveira, @timneutkens, @gaearon, and @lukesandberg for helping!