perf(regular_expression): track regex flags via bitflags#22427
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Boshen
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May 14, 2026
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@claude[agent] try use bit flags
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Done in 9cb5589. Replaced manual bit manipulation with the |
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leaysgur
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## Summary Replace the `FxHashSet<u32>` used to detect duplicate flags in `FlagsParser` with a typed `bitflags!` set over `u8`. Avoids the per-regex hash-set allocation in flag parsing.
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camc314
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### 🐛 Bug Fixes - 0f26de6 ecmascript: Resolve identifier value type via tracked constants (#22234) (Alexander Lichter) - c27a8cf minifier: Normalize `{ x: x }` shorthand so adjacent-if merge is idempotent (#22401) (Dunqing) - e431a0e parser: Break extends clause loop on fatal error (#22517) (Boshen) - e9ec7c6 minifier: Fold optional chains by base nullishness (#22236) (Alexander Lichter) - e6090e7 transformer: Keep enum IIFE when a non-inlinable value reference remains (#22501) (Dunqing) - 931b7d6 transformer: Inline const enum members through type-cast wrappers (#22500) (Dunqing) - b9615b2 codegen: Preserve string quotes in require() calls during minification (#22475) (zennnnnnn11) - c73c159 transformer/async-to-generator: Reparent parameter initializer scopes (#22507) (camc314) - ecfd3ca transformer/async-to-generator: Move only parameter bindings (#22503) (camc314) - 3ce3431 transformer/explicit-resource-managment: Preserve shadowed for-head block (#22451) (camc314) ### ⚡ Performance - ce92c6c semantic: `#[inline]` `Scoping::get_binding` (#22414) (Dunqing) - 98be95c regular_expression: Track regex flags via bitflags (#22427) (Boshen) - dbbc059 jsdoc: Skip should_attach_jsdoc when no remaining comments (#22409) (Boshen) - 217d7d8 minifier: Index `SymbolValues` by `SymbolId` (#22441) (Dunqing) - d782b78 minifier: Use BitSet for LiveUsageCollector live references (#22425) (Boshen)
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Summary
Replace the
FxHashSet<u32>used to detect duplicate flags inFlagsParserwith a typedbitflags!set overu8. Avoids the per-regex hash-set allocation in flag parsing.