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fix(tla): should not await non-tla-related modules#7768

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01-06-fix_tla_should_only_await_tla-related_modules
Jan 6, 2026
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fix(tla): should not await non-tla-related modules#7768
graphite-app[bot] merged 1 commit intomainfrom
01-06-fix_tla_should_only_await_tla-related_modules

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@hyf0 hyf0 commented Jan 6, 2026

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@hyf0 hyf0 marked this pull request as ready for review January 6, 2026 09:06
Copilot AI review requested due to automatic review settings January 6, 2026 09:06
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hyf0 commented Jan 6, 2026


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Pull request overview

This PR fixes a bug where the bundler was incorrectly awaiting all module init calls when the parent module had top-level await (TLA) dependencies, rather than only awaiting the init calls for modules that actually have TLA themselves.

Key changes:

  • Fixed the TLA detection logic to check if the importee module has TLA dependencies instead of the current module
  • Added a comprehensive test case demonstrating the fix with both TLA and non-TLA module chains

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated no comments.

Show a summary per file
File Description
crates/rolldown/src/module_finalizers/mod.rs Fixed bug: changed from checking current module's TLA status to checking importee's TLA status when deciding whether to await init calls
crates/rolldown/tests/rolldown/topics/tla/on_demand_await_call/* Added new test case with mixed TLA and non-TLA module dependencies to verify the fix
crates/rolldown/tests/rolldown/topics/tla/inline_dynamic_import/artifacts.snap Updated snapshot showing removal of unnecessary await for module without TLA
crates/rolldown/tests/rolldown/function/experimental/strict_execution_order/top_level_await_syntax_minify/artifacts.snap Updated snapshot reflecting the fix in minified output
crates/rolldown/tests/snapshots/integration_rolldown__filename_with_hash.snap Updated hash values due to changed output

The fix is correct and well-tested. No issues found.


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@hyf0 hyf0 changed the title fix(tla): should only await tla-related modules fix(tla): should not await non-tla-related modules Jan 6, 2026
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github-actions bot commented Jan 6, 2026

Benchmarks Rust

  • target: main(a83a301)
  • pr: 01-06-fix_tla_should_only_await_tla-related_modules(c014ed5)
group                                                        pr                                     target
-----                                                        --                                     ------
bundle/bundle@multi-duplicated-top-level-symbol              1.03     68.1±1.90ms        ? ?/sec    1.00     66.0±4.44ms        ? ?/sec
bundle/bundle@multi-duplicated-top-level-symbol-sourcemap    1.03     74.5±1.83ms        ? ?/sec    1.00     72.6±2.86ms        ? ?/sec
bundle/bundle@rome_ts                                        1.01    109.4±4.36ms        ? ?/sec    1.00    107.8±2.81ms        ? ?/sec
bundle/bundle@rome_ts-sourcemap                              1.02    119.7±2.48ms        ? ?/sec    1.00    117.5±2.25ms        ? ?/sec
bundle/bundle@threejs                                        1.02     40.6±2.03ms        ? ?/sec    1.00     39.9±0.80ms        ? ?/sec
bundle/bundle@threejs-sourcemap                              1.00     44.9±0.97ms        ? ?/sec    1.01     45.4±1.15ms        ? ?/sec
bundle/bundle@threejs10x                                     1.03    396.3±6.84ms        ? ?/sec    1.00    386.4±5.97ms        ? ?/sec
bundle/bundle@threejs10x-sourcemap                           1.01    455.3±6.33ms        ? ?/sec    1.00    450.1±7.63ms        ? ?/sec
scan/scan@rome_ts                                            1.02     85.8±2.03ms        ? ?/sec    1.00     84.1±1.55ms        ? ?/sec
scan/scan@threejs                                            1.03     29.4±1.73ms        ? ?/sec    1.00     28.5±1.73ms        ? ?/sec
scan/scan@threejs10x                                         1.02    297.7±5.57ms        ? ?/sec    1.00    291.8±6.08ms        ? ?/sec

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hyf0 commented Jan 6, 2026

Merge activity

@graphite-app graphite-app bot force-pushed the 01-06-fix_tla_should_only_await_tla-related_modules branch from c014ed5 to 679b127 Compare January 6, 2026 12:58
@graphite-app graphite-app bot merged commit 679b127 into main Jan 6, 2026
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@graphite-app graphite-app bot deleted the 01-06-fix_tla_should_only_await_tla-related_modules branch January 6, 2026 13:08
This was referenced Jan 7, 2026
shulaoda added a commit that referenced this pull request Jan 7, 2026
## [1.0.0-beta.59] - 2026-01-07

⚡ Inline Dynamic Imports for Statically Imported Modules

- When a module is already statically imported, dynamic imports to that same module are now inlined instead of creating a separate chunk

### 🚀 Features

- plugin_timings: add 3s threshold and doc link to warning message (#7741) by @shulaoda
- improve treeshaking logic to handle empty parameter list in dynamic import .then() callbacks (#7781) by @Copilot
- dev/lazy: don't include already executed modules (#7745) by @hyf0
- dev/lazy: support dynamic `import(..)` (#7726) by @hyf0
- inline dynamic imports that imports statically imported modules (#7742) by @IWANABETHATGUY
- option: add experimental option to control chunk optimization (#7738) by @IWANABETHATGUY

### 🐛 Bug Fixes

- inline dynamic entry to user defined entry with esm wrap kind (#7783) by @IWANABETHATGUY
- use canonical namespace reference for property access (#7777) by @IWANABETHATGUY
- dynamic entry merged into common chunk with cjs and esm wrap kind (#7771) by @IWANABETHATGUY
- tla: should not await non-tla-related modules (#7768) by @hyf0
- dynamic entry captured by common chunk with CJS format (#7757) by @IWANABETHATGUY
- module_loader: mark emitted chunks as user-defined entry when already loaded (#7765) by @shulaoda
- normalize preserveModulesRoot path (#7737) by @IWANABETHATGUY
- linker: resolve race condition in side effects computation for export-star (#7728) by @camc314

### 🚜 Refactor

- plugin_timings: filter out plugins with duration < 1s from timing warnings (#7785) by @shulaoda
- module_loader: remove unnecessary collect before extend (#7769) by @shulaoda
- rename _id suffixes to _idx for oxc_index types (#7767) by @IWANABETHATGUY
- remove duplicate `preserve_entry_signatures` from `AddEntryModuleMsg` (#7762) by @shulaoda
- module_loader: pass `user_defined_entries` by reference (#7756) by @shulaoda
- dev/lazy: get proxy entry's `ResolvedId` correctly (#7746) by @hyf0
- simplify try_rewrite_import_expression control flow (#7753) by @IWANABETHATGUY
- module_loader: remove unnecessary dynamic import handling for runtime module (#7754) by @shulaoda
- inline __toDynamicImportESM  (#7747) by @IWANABETHATGUY
- use From impl for ModuleLoaderOutput conversion (#7732) by @shulaoda
- remove duplicate fields from `ModuleLoader` (#7731) by @shulaoda
- tweak `resolve_user_defined_entries` (#7727) by @shulaoda

### 📚 Documentation

- add rolldown-string reference to native MagicString compatibility section (#7778) by @Copilot
- improve comments for export star side effects handling (#7730) by @IWANABETHATGUY

### 🧪 Testing

- use assertion instead of console.log for some testcase (#7744) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- tweak some `output.dynamicImportInCjs` related rollup test results (#7776) by @sapphi-red
- mark esbuild/dce/dce_of_symbol_ctor_call as passed (#7775) by @sapphi-red
- deps: update oxc apps (#7772) by @renovate[bot]
- vite-tests: allow running on PRs with `test: vite-tests` label (#7770) by @shulaoda
- deps: update oxc apps (#7760) by @renovate[bot]
- deps: update rollup submodule for tests to v4.55.1 (#7763) by @sapphi-red
- deps: update test262 submodule for tests (#7764) by @sapphi-red
- deps: update oxc to v0.107.0 (#7758) by @camc314
- deps: update taiki-e/install-action action to v2.65.13 (#7751) by @renovate[bot]
- deps: update rust crates (#7750) by @renovate[bot]
- deps: update npm packages (#7749) by @renovate[bot]
- deps: update github-actions (#7748) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.10.1 (#7729) by @renovate[bot]
- deps: update crate-ci/typos action to v1.41.0 (#7725) by @renovate[bot]

Co-authored-by: shulaoda <[email protected]>
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