perf: drop throwaway Vec in wrapped esm init stmt#9878
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IWANABETHATGUY
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`wrapped_esm_init_stmt_for_import_record` collected the owned `FxIndexSet` returned by `collect_wrapped_esm_init_modules_for_import_record` into an intermediate `Vec` (with a redundant `is_empty` guard) before iterating it exactly once. The returned set is owned, so the `&self` borrow ends at the call and the `filter_map` (`&mut self`) can chain directly off `into_iter()`.
Drop the throwaway `Vec` and the `is_empty` guard (already covered by the `match init_exprs.len() { 0 => None, .. }` dispatch), removing one heap allocation per wrapped-ESM import record on the finalize path. No behavior change.
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## [1.1.3] - 2026-06-24 ### 🐛 Bug Fixes - `defer_drop` crashes the browser main thread (#9942) by @shulaoda - camel-case: correct camel case for nested values (#9933) by @kb019 - cli: display --help options in camelCase (#9941) by @IWANABETHATGUY - preserve used re-exports under preserveModules (#9122) (#9934) by @IWANABETHATGUY - watch: make close reentrant in event callbacks (#9904) by @hyf0 - git for windows treats symlink files as regular files (#9915) by @AliceLanniste - dev: cancel pending full reload on build error (#9903) by @h-a-n-a - chunking: pass plugin meta to codeSplitting groups name function (#9267) by @Kyujenius - dev: serve assets emitted during HMR/lazy compile (vite#22596) (#9815) by @h-a-n-a - release: dry-run step no longer publishes binding packages (#9866) by @Boshen ### 🚜 Refactor - rolldown_common: model ModuleId as a classified Path/Virtual/Bare enum (#9927) by @Boshen - remove unused LegacyModuleIdx (#9872) by @shulaoda - remove unused StmtInfos::get_namespace_stmt_info (#9870) by @shulaoda - remove unused Module::as_external_mut (#9871) by @shulaoda - remove unused EcmaAst::is_body_empty (#9869) by @shulaoda - drop dead is_css_module handling in resolve_dependencies (#9867) by @shulaoda - drop redundant with_commonjs on cjs source type (#9868) by @shulaoda ### 📚 Documentation - clarify on drafting PRs (#9952) by @h-a-n-a - update contribution guidelines (#9944) by @fubhy - note Rust crates don't follow semver in AGENTS.md (#9905) by @IWANABETHATGUY - add feedback form (#9159) by @TheAlexLichter ### ⚡ Performance - utils: avoid allocation in default_sanitize_file_name for clean names (#9928) by @Boshen - binding: box once-per-build futures before spawn_future (#9864) by @Boshen - utils: avoid wasted allocation in legitimize_identifier_name (#9926) by @Boshen - rolldown: fuse the canonical-name dedup and insert in the renamer (#9900) by @Boshen - rolldown: probe the name map once in ConflictResolver::resolve (#9899) by @Boshen - cut two heap allocations from wrapped ESM init finalize (#9901) by @Boshen - rolldown_plugin_vite_reporter: hoist invariant out_dir prefix out of reporter loop (#9873) by @shulaoda - drop throwaway Vec in wrapped esm init stmt (#9878) by @shulaoda - borrow owner_filename in build-import-analysis AddDeps (#9874) by @shulaoda ### 🧪 Testing - cover preserveModules named export via namespace re-export (#6010) (#9937) by @IWANABETHATGUY ### ⚙️ Miscellaneous Tasks - deps: update napi to v3.9.4 (#9954) by @shulaoda - reduce noise from CODEOWNERS for trival changes (#9953) by @h-a-n-a - deps: update mimalloc-safe to 0.1.64 (#9950) by @shulaoda - deps: update rollup submodule for tests to v4.62.2 (#9931) by @rolldown-guard[bot] - deps: test mimalloc-safe upstream-mimalloc switch in CI (#9930) by @shulaoda - rolldown_plugin_vite_build_import_analysis: remove unused v2 code path (#9917) by @shulaoda - rolldown_plugin_vite_manifest: remove unused is_enable_v2 code path (#9916) by @shulaoda - rolldown_plugin_vite_asset_import_meta_url: remove unexposed native vite plugin (#9896) by @shulaoda - rolldown_plugin_vite_asset: remove unexposed native vite plugin (#9895) by @shulaoda - rolldown_plugin_vite_css_post: remove unexposed native vite plugin (#9894) by @shulaoda - rolldown_plugin_vite_css: remove unexposed native vite plugin (#9893) by @shulaoda - rolldown_plugin_vite_html_inline_proxy: remove unexposed native vite plugin (#9892) by @shulaoda - rolldown_plugin_vite_html: remove unexposed native vite plugin (#9891) by @shulaoda - deps: update github actions (#9909) by @renovate[bot] - deps: update rust crate oxc_sourcemap to v8.0.2 (#9910) by @renovate[bot] - deps: update npm packages (#9912) by @renovate[bot] - deps: update github actions to v7 (#9913) by @renovate[bot] - deps: update rolldown-plugin-dts to ^0.26.0 (#9897) by @renovate[bot] - remove rolldown_filter_analyzer crate (#9865) by @Boshen ### ❤️ New Contributors * @fubhy made their first contribution in [#9944](#9944) Co-authored-by: shulaoda <165626830+shulaoda@users.noreply.github.com>
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wrapped_esm_init_stmt_for_import_recordcollected the ownedFxIndexSetreturned bycollect_wrapped_esm_init_modules_for_import_recordinto an intermediateVec(with a redundantis_emptyguard) before iterating it exactly once. The returned set is owned, so the&selfborrow ends at the call and thefilter_map(&mut self) can chain directly offinto_iter().Drop the throwaway
Vecand theis_emptyguard (already covered by thematch init_exprs.len() { 0 => None, .. }dispatch), removing one heap allocation per wrapped-ESM import record on the finalize path. No behavior change.