rolldown/rolldown v1.0.0-beta.55 on GitHub

[1.0.0-beta.55] - 2025-12-17

✨ Post-Minification Banner & Footer

New postBanner and postFooter options allow adding content to chunks after minification, ensuring your comments won't be stripped by the minifier:

export default {
  output: {
    minify: true,
    postBanner: '/* My Library v1.0.0 */', // Always preserved
  },
};

add validation errors for incompatible inlineDynamicImports options (#7539) by @Copilot
rolldown_plugin_vite_reporter: truncate long importer lists in ineffective dynamic import warnings (#7528) by @Copilot
export memfs from rolldown/experimental for browser builds (#7490) by @Copilot
implement postBanner and postFooter (#7487) by @sevenc-nanashi
port getLogFilter helper from Rollup for advanced log filtering (#6890) by @taearls
dev: initialize rolldown_plugin_lazy_compilation (#7488) by @hyf0
enable experimental.transform_hires_sourcemap: 'boundary' by default (#7478) by @sapphi-red
apply merge CJS namespace optimizations more generally (#7475) by @sapphi-red

avoid panic on invalid values for output.exports, output.format, output.hash_characters (#7542) by @sapphi-red
handle __proto__ export for module namespace correctly (#7534) by @sapphi-red
handle __proto__ export correctly (#7533) by @sapphi-red
rolldown_plugin_vite_resolve: acquire resolver lock before package json resolution (#7524) by @sapphi-red
disable syntax transform optimization for minify: 'dce-only' (#7520) by @sapphi-red
arrow function expression keep names (#7519) by @IWANABETHATGUY
skip symbols that are imported from other module when deconflicting module symbols (#7510) by @IWANABETHATGUY
preserve class names in assignment expressions with keepNames option (#7491) by @IWANABETHATGUY
accessor with decorators should be kept (#7499) by @Copilot
rolldown_plugin_vite_reporter: support Infinity for chunk_limit (#7497) by @shulaoda
change filename template validation errors from UNHANDLEABLE_ERROR to INVALID_OPTION (#7472) by @Copilot
no entry found for key error when merging CJS namespace exports (#7474) by @sapphi-red
generate output with syntax error when wrapped esm module using tla syntax (#7468) by @IWANABETHATGUY

add tests for static string postBanner and postFooter (#7516) by @Copilot
disable pluginTimings in Rust integration tests to avoid snapshot noise (#7485) by @shulaoda
port Rollup JSX tests to crates/rolldown/tests/rollup (#7480) by @sapphi-red
re-triage some esbuild JSX preserve tests (#7479) by @sapphi-red
disable pluginTimings by default to avoid snapshot noise (#7471) by @shulaoda

mark feature that will not be supported as ignored in rollup test status (#7535) by @sapphi-red
support banner/footer/intro/outro for config variants (#7532) by @sapphi-red
dce/dce_of_decorators esbuild test is now passing (#7531) by @sapphi-red
deps: update github-actions (major) (#7495) by @renovate[bot]
deps: update npm packages (#7493) by @renovate[bot]
add a check to verify failedReasons are updated (#7521) by @sapphi-red
deps: update test262 submodule for tests (#7523) by @sapphi-red
deps: update taiki-e/install-action action to v2.63.2 (#7496) by @renovate[bot]
deps: update oxc apps (#7511) by @renovate[bot]
deps: update oxc to v0.103.0 (#7513) by @camc314
fix format in .github/instructions/bug-investigation.instructions.md (#7506) by @sapphi-red
add instructions for REPL decoding (#7502) by @sapphi-red
deps: update github-actions (#7492) by @renovate[bot]
deps: cargo-shear v1.9.0 (#7483) by @Boshen
deps: update dependency oxlint-tsgolint to v0.9.0 (#7484) by @renovate[bot]
deps: update dependency oxlint-tsgolint to v0.8.6 (#7470) by @renovate[bot]
add syntax validation for test output chunks that are not executed (#7466) by @IWANABETHATGUY
deps: update dependency rust to v1.92.0 (#7467) by @renovate[bot]
deps: update test262 submodule for tests (#7457) by @sapphi-red