perf(transformer/react-refresh): reserve capacity in hook key string #8016
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CodSpeed Performance ReportMerging #8016 will not alter performanceComparing Summary
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I'm actually not sure if this is a perf improvement or not. The +2% on cal.com benchmark might just be noise. I'll push a couple of dummy commits to run CodSpeed again. |
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Have run benchmarks 4 times, and it does show a consistent perf improvement, but much less than 2%. |
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Dunqing
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## [0.43.0] - 2024-12-21 - de4c772 traverse: [**BREAKING**] Rename `Ancestor::is_via_*` methods to `is_parent_of_*` (#8031) (overlookmotel) - ed75e42 semantic: [**BREAKING**] Make SymbolTable fields `pub(crate)` instead of `pub` (#7999) (Boshen) ### Features - 75b775c allocator: `Vec<u8>::into_string` (#8017) (overlookmotel) - 8547e02 ast: Implement `allocator_api2` for `Allocator` (#8043) (Boshen) - 63a95e4 ast: Add `AstBulder::move_property_key` (#7998) (overlookmotel) - 897a1a8 transformer/class-properties: Exit faster from super replacement visitor (#8028) (overlookmotel) - 3ea4109 transformer/class-properties: Transform super update expressions within static prop initializer (#7997) (Dunqing) - cc57db3 transformer/class-properties: Transform super assignment expressions within static prop initializer (#7991) (Dunqing) - 6b6444b traverse: Record current block scope (#8007) (overlookmotel) ### Bug Fixes - 043252d transformer/class-properties: Replace `this` and class name in static blocks (#8035) (overlookmotel) - 273795d transformer/class-properties: Run other transforms on static properties, static blocks, and computed keys (#7982) (overlookmotel) ### Performance - c0dd3f8 ast: `move_expression` and `move_statement` produce dummy with no span (#7995) (overlookmotel) - 862838f codegen: Remove useless to_owned (#8014) (Dunqing) - 2736657 semantic: Allocate `UnresolvedReferences` in allocator (#8046) (Boshen) - 2e8872c semantic: Allocate child scope in allocator (#8045) (Boshen) - 414e828 semantic: Allocate symbol data in Allocator (#8012) (Boshen) - 7aebed0 semantic: Allocate `Bindings` in allocator (#8021) (Boshen) - 0f9308f transformer/react-refresh: Reduce allocations (#8018) (overlookmotel) - 0deb9e6 transformer/react-refresh: Reserve capacity in hook key string (#8016) (overlookmotel) - 7b70347 transformer/react-refresh: Avoid allocating string in each hook call (#8013) (Dunqing) ### Documentation - df5c341 ast: Improve docs for `AstBuilder::move_*` methods (#7994) (overlookmotel) ### Refactor - f1adf9f semantic: `ScopeTree::rename_binding` remove old binding first (#8020) (overlookmotel) - 02f968d semantic: Change `Bindings` to a plain `FxHashMap` (#8019) (Boshen) - e7476a1 semantic: Remove `serialize` (#8015) (Boshen) - 1cf7b83 semantic: Simplify handling namespace stack (#7987) (Dunqing) - 48cb52b semantic: Remove resetting `current_reference_flags` in visit functions (#7986) (Dunqing) - 3250a47 semantic: Remove unused current_symbol_flags (#7985) (Dunqing) - efe96ec semantic: Use `Stack` for function stack node ids (#7984) (Dunqing) - ac097e9 transformer/class-properties: Rename file (#8036) (overlookmotel) - 059a5dd transformer/class-properties: Do not pass `ScopeId` into `insert_instance_inits` (#8001) (overlookmotel) - 0a38eea transformer/class-properties: Use `temp_var_name_base` to generate temp var names for `super` transform (#8004) (overlookmotel) - d1b7181 transformer/class-properties: Rename var (#8006) (overlookmotel) - 5a23d72 transformer/class-properties: Remove outdated comment (#8000) (overlookmotel) - b3a5f3e transformer/class-properties: Mark `transform_assignment_expression_if_super_member_assignment_target` as inline (#7993) (Dunqing) ### Testing - bcb33c0 semantic: Add a test for catch parameters reference (#7988) (Dunqing) Co-authored-by: Boshen <[email protected]>
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Follow-on after #8013. Reserve sufficient capacity in
Stringused to store hook key, before pushing to it.Also refactor so code for constructing key is only included once.