next.js

00067f40 - Use keyed cells for used_exports and export_circuit_breakers in BindingUsageInfo (#91306)

Use keyed cells for used_exports and export_circuit_breakers in BindingUsageInfo (#91306) ## What? Apply the `cell = "keyed"` pattern to `used_exports` (`FxHashMap`) and `export_circuit_breakers` (`FxHashSet`) in `BindingUsageInfo`, matching the existing pattern already used for `unused_references`. ## Why? Previously, `used_exports` and `export_circuit_breakers` were stored as plain inline collections within `BindingUsageInfo`. Any change to any module's export usage would invalidate **all** callers of `used_exports()`, even those querying unrelated modules. This causes unnecessary recomputation during incremental rebuilds. With keyed cells, lookups like `self.used_exports.get(&module)` and `self.export_circuit_breakers.contains_key(&module)` only invalidate callers that queried the specific module whose export usage changed, providing per-module invalidation granularity. ## How? 1. **New keyed transparent value types** — `UsedExportsMap` and `ExportCircuitBreakers` wrappers with `#[turbo_tasks::value(transparent, cell = "keyed")]`. 2. **Fields changed to `ResolvedVc`** — `used_exports` and `export_circuit_breakers` fields are now `ResolvedVc<UsedExportsMap>` and `ResolvedVc<ExportCircuitBreakers>` instead of inline `FxHashMap`/`FxHashSet`. 3. **`used_exports()` becomes a `#[turbo_tasks::function]`** — Moved into a `#[turbo_tasks::value_impl]` block so it's a tracked task function. Callers (`BrowserChunkingContext`, `NodeJsChunkingContext`) no longer need `.await?` — they call it directly and get a `Vc<ModuleExportUsage>`. 4. **Per-key lookups** — `contains_key(&module).await?` and `get(&module).await?` leverage the keyed cell pattern for fine-grained invalidation. ### Files changed - `turbopack/crates/turbopack-core/src/module_graph/binding_usage_info.rs` — Core changes: new keyed types, field type changes, `used_exports()` as tracked function - `turbopack/crates/turbopack-browser/src/chunking_context.rs` — Simplified call site (no `.await?`) - `turbopack/crates/turbopack-nodejs/src/chunking_context.rs` — Simplified call site (no `.await?`) --------- Co-authored-by: Tobias Koppers <sokra@users.noreply.github.com> Co-authored-by: Claude <noreply@anthropic.com>