Improved
v1.0.0-beta.59
[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
- REPL: before and after
Before:
import { foo } from './foo.js'
console.log(foo)
import('./foo.js').then(mod => console.log(mod.foo))
Previously, import('./foo.js') would create a separate async chunk.
After:
var foo_exports = /* @__PURE__ */ __exportAll({ foo: () => foo });
const foo = "foo";
console.log(foo);
Promise.resolve().then(() => foo_exports).then((mod) => console.log(mod.foo));
The dynamic import is inlined since foo.js is already statically imported.
🚀 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_signaturesfromAddEntryModuleMsg(#7762) by @shulaoda - module_loader: pass
user_defined_entriesby reference (#7756) by @shulaoda - dev/lazy: get proxy entry's
ResolvedIdcorrectly (#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.dynamicImportInCjsrelated 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-testslabel (#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 165626830+shulaoda@users.noreply.github.com