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feat: migrate Router and Start compilation to Yuku - #8504

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Sheraff wants to merge 162 commits into

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codex/yuku-evaluation

Open

feat: migrate Router and Start compilation to Yuku#8504
Sheraff wants to merge 162 commits into
mainfrom
codex/yuku-evaluation

Commits on Sep 27, 2026
- test: add native compiler migration evaluation harness
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- test: record final compiler migration measurements
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  7870d28
- feat: migrate Router and Start compilation to Yuku
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  22be2cc
- test: verify JSX bindings across Yuku compiler outputs
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  20ef7aa
- feat: upgrade native compiler to Yuku 0.12 and validate migration
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  8a1b9e5
- ci: allow Yuku 0.12 native packages through release age policy
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  edd6c4f
- test: cover native compiler import boundaries and syntax diagnostics
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  d99f54f
- fix: preserve compiler import boundaries and bundler contracts
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  0c33be3
- docs: record Yuku CI fixes and final validation
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  859aaed
- test: preserve compiler contracts across stack rebase
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  34a1947
Commits on Oct 6, 2026
- feat: upgrade Yuku to 0.17 and use its WebAssembly core in WebContainers
  
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- chore: remove Yuku evaluation benchmarks and results
  
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- fix: ignore signature parameters when indexing declarations
  
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- chore: require Node.js 22.12 for the compiler packages
  
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  2f83502
- fix(router-utils): resolve the WASM core from import.meta first
  
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  655a9d5
- chore(router-utils): silence no-unnecessary-condition on the CJS import.meta fallback
  
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- fix(router-utils): keep side effects that only reference themselves
  
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- test(router-plugin): cover self-referencing side effects in split routes
  
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- fix(router-plugin): emit valid split chunks for re-exports and partial exports
  
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  bfda3fb
- fix(router-plugin): only treat module-scope factory calls as route definitions
  
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  474e36f
- fix(router-plugin): hoist React Refresh components before a renamed export
  
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  9c72a5e
- fix(start-plugin-core): restore Hydrate cleanup, directives, and JSX text semantics
  
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- fix(start-plugin-core): only extract module-level server functions
  
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  494d87c
- fix(start-plugin-core): accept direct-call kinds that were not text-detected
  
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  91bdae0
- test(start-plugin-core): fail the build for server functions not assigned to a variable
  
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  70188c0
- fix(router-plugin): do not share route-option dependencies through `Route`
  
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  c9c01ec
- fix(router-utils, router-plugin): keep block-scoped `var` out of shared and imported bindings
  
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  7517bed
- fix(router-plugin): declare exports alongside private state a split chunk owns
  
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- fix(router-plugin): export only the last of duplicate split keys
  
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- fix(start-plugin-core): keep nested returns and self-closing Hydrate boundaries valid
  
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  15d685c
- fix(router-generator): read route calls through parentheses
  
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  30ec838
- fix(start-plugin-core): count every JS line terminator in compiler diagnostics
  
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- test(start-plugin-core): cover server-fn cases that main miscompiles
  
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- test(router-plugin): cover code-splitting cases that main miscompiles
  
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- test: cover Hydrate and code-splitting cases that main miscompiles
  
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- test: cover React Compiler fixture shapes that main miscompiles
  
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- fix(router-utils): parse JavaScript files without TypeScript syntax
  
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- fix(router-utils): remove only declarations whose runtime uses were erased
  
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- fix(router-utils): drop the destructuring elements of erased bindings
  
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  e5d1591
- fix(router-plugin): always import exported variables into split chunks
  
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- fix(router-plugin): never route ambient declarations through the shared module
  
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  1fbf818
- fix(router-plugin): keep file-level pragmas at the top of every split module
  
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- fix(start-plugin-core): keep file-level JSX pragmas leading compiler output
  
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- test(start-plugin-core): cover JSX pragmas below inserted imports that main miscompiles
  
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- refactor(router-utils): share one file-pragma rule between the compilers
  
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- test(start-plugin-core): cover directive-compiler cases that main miscompiles
  
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- fix(router-utils): keep solid-refresh pragmas leading compiler output
  
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- test: cover dead-code and RSC transform cases that main miscompiles
  
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- fix(router-utils): remove unused `var` declarators nested in statements
  
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Commits on Oct 7, 2026
- Merge branch 'main' into codex/yuku-evaluation
  
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Commits on Oct 8, 2026
- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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  97da9a8
- chore: upgrade Yuku to 0.18.0
  
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- test(router-plugin): reject duplicate type and value re-exports like TypeScript
  
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- test(router-plugin): drop the duplicate type and value re-export case
  
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- test(start-plugin-core): share compile-error and directive prologue helpers
  
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- fix(start-plugin-core): reject createServerFn declared below module level
  
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- fix(start-plugin-core): compile a createServerOnlyFn passed to a server fn handler
  
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- test(start-plugin-core): fold ported Start compiler suites into topic suites
  
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- test(start-plugin-core): fold ported Hydrate suites into topic suites
  
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- test(start-plugin-core): fold the JSX pragma suites into one
  
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- test(start-plugin-core): move Hydrate pipeline cases into hydrate-split-modules
  
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- test(start-plugin-core): format the folded suites and drop PR-history wording
  
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- test(router-plugin): cover shared enums, namespaces, ambient consts and export * at runtime
  
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- fix(router-plugin): split the handler of object-form loaders
  
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- fix(router-utils): drop imports only types reference from modules without such references
  
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- test(router-plugin): drop code-splitter fixtures that snapshot duplicated module state
  
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- test(router-plugin): replace redundant compiler fixtures with behaviour tests
  
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- test(router-plugin): fold the ported compiler scenarios into the topic suites
  
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- test(router-plugin): assert route analysis reuse through the emitted outputs
  
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- test(router-utils): assert declaration ownership through cleaned-up output
  
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- test(router-generator): reach the single route call guard with valid code
  
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- test(router-plugin): satisfy lint in the regression helpers and snapshot suite
  
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- docs(router-plugin): describe split-module export imports without PR history
  
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- fix(router-utils): keep the classic JSX factories named by @jsx and @jsxFrag pragmas wherever JSX remains
  
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- fix(router-plugin): add route HMR for the exported Route, not the first route the module creates
  
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- fix(start-plugin-core): Hydrate chunks import the parent module's Route instead of creating it again
  
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- fix(router-utils): parse a .ts module as TypeScript when a directory of its path contains #
  
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- fix(start-plugin-core): accept a server fn assigned through an optional call chain
  
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- fix(router-utils): fall back to Yuku's WebAssembly core when the native binding cannot load
  
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- fix(router-utils): keep leading legal comments and the annotations of unwrapped export declarations
  
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- chore(router): keep the Node.js >=20.19 floor of the router compiler packages
  
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- chore: satisfy lint and type checks of the compiler regression fixes
  
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- feat(router-plugin): warn when a route file creates its route inside a function
  
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- docs(changeset): state the createServerFn placement build error and the route factory warning
  
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Commits on Oct 9, 2026
- refactor: standardize Yuku compiler helpers and terminology
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Commits on Oct 10, 2026
- chore: upgrade Yuku to 0.18.1
  
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- test: regenerate compiler snapshots with formatted Yuku output
  
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- docs(router-plugin): describe source maps through generateModule
  
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- chore: pin Yuku through the workspace catalog and match the Node.js range to require(esm)
  
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- fix: locate the unassigned createServerFn error and document behaviour changes
  
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- fix(router-plugin): keep module-level writes to an enum or namespace that moves into a split chunk
  
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- docs(changeset): limit the object-form loader split to inline objects
  
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- test(router-utils): cover the WebAssembly fallback when the native binding cannot load
  
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- fix(router-plugin): keep the tsrShared import the route analysis cache uses
  
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- fix(router-utils): never hand an empty source to Yuku
  
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Commits on Oct 11, 2026
- chore: upgrade Yuku to 0.19.0
  
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- refactor: use Yuku's isWrapper, nameOf and literal guards
  
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- refactor(router-generator): find the Route export with Yuku's export records
  
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- refactor(start-plugin-core): read import protection exports from Yuku's records
  
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- refactor: walk ancestors with Yuku instead of manual parent loops
  
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- refactor(start-plugin-core): drop expression guards on callees and member objects
  
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- Merge remote-tracking branch 'origin/main' into codex/yuku-evaluation
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- perf(router-plugin,start-plugin-core): avoid eager ancestor arrays in the route and Hydrate compilers
  
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- perf(router-utils): memoise the declaration graph per module
  
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- refactor(router-utils): remove the unused roots option of removeUnusedBindings
  
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- refactor(router-utils): simplify the binding liveness helpers
  
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- refactor(router-utils): drop dead source map reshaping in generateModule
  
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- refactor(router-utils): stop exporting helpers no package uses
  
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- refactor(router-utils): unwrap any node in unwrapExpression
  
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- refactor(start-plugin-core): climb wrapper parents directly in import protection
  
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- refactor(router-plugin): check codeSplitGroupings items with is.StringLiteral
  
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- refactor(start-plugin-core): read the Hydrate import from the module records
  
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- refactor(start-plugin-core): build the Hydrate boundary id literal with b.Literal
  
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- refactor(react-start-rsc): build the RSC CSS fragment with builders
  
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- refactor(start-plugin-core): use the module info ingestModule returns
  
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- refactor(start-plugin-core): inline generateResultFromAst
  
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- refactor(start-plugin-core): keep the extracted bindings map instead of copying it
  
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- perf(start-plugin-core): check for a module-level initializer only when a direct call needs it
  
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- perf(start-plugin-core): index only the parents of the Start output tree
  
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- perf(router-plugin): read each output program once for unique identifiers
  
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- revert: memoising the declaration graph per module
  
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- refactor(router-plugin): analyze each route transform once instead of caching analyses
  
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- refactor(start-plugin-core): retain Hydrate source code, not its analysis
  
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- refactor(router-utils): compute JSX factories and initially unused bindings per cleanup
  
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- refactor(router-plugin): reserve unique names in a set each output owns
  
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- refactor(router-plugin): give reference compiler plugins the route's declaration graph
  
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- docs(changeset): note the type-only Route export and import protection mock changes
  
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- refactor(router-utils): collect referenced names in the removal walk
  
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Commits on Oct 14, 2026
- Merge branch 'main' into codex/yuku-evaluation
  
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  e7faaba
- chore: drop the Yuku 0.19.0 release-age exclusion
  
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  8f02f6a
Commits on Oct 15, 2026

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