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npm · #792 most downloaded on npm
Next-generation ES module bundler
Last release 4 days ago
24 Sep 2026
Ships fairly regularly
a new release about every 2 weeks
Nearly every release is documented
notes for 59 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
11 years old
948 releases · first in 2015
Approximate source position instead of ignoring it when using a low-resolution source map in a transform hook
2022-03-04
soft-deprecate output.namespaceToStringTag in favor of output.generatedCode.symbols
2022-03-02
output.generatedCode.symbols to control the usage of Symbols in Rollup-generated code (#4378)output.namespaceToStringTag in favor of output.generatedCode.symbols (#4378)./ and ../ as external dependencies (#4419)One column per quarter.
provide information about cached import resolutions in shouldTransformCachedModule
2022-02-22
shouldTransformCachedModule (#4414)Do not swallow other errors when unfinished hook actions are detected
2022-02-18
Ensure consistent order between manual chunks to fix hashing issues
2022-02-10
Make chunk file and variable names more deterministic when emitting chunks
2022-02-07
Soft-deprecate ModuleInfo.hasModuleSideEffects in favour of ModuleInfo.moduleSideEffects
2022-02-02
moduleSideEffects at any time during the build (#4379)ModuleInfo.hasModuleSideEffects in favour of ModuleInfo.moduleSideEffects (#4379)Only warn for conflicting names in namespace reexports if it actually causes problems
2022-01-25
Note if a module has a default export in ModuleInfo to allow writing better proxy modules
2022-01-22
this.load (#4358)Add complete import resolution objects to ModuleInfo for use in this.load
2022-01-21
this.load (#4354)perf: true (#4357)Allow inspecting cached modules and forcing them to be transformed again via shouldTransformCachedModule
2022-01-14
meta from the resolveId hook (#4347)Report a helpful error if rollup exits due to an empty event loop when using this.load
2022-01-04
this.load (#4320)--watch is missing (#4335)Mark additional string prototype methods as side-effect-free and correct typings of existing ones
2021-12-24
Only resolve this.load once the code of the module is available
Support ergonomic brand checks for private fields
Produce correct output when dynamic import paths contain quotes
2021-11-30
Make sure virtual files have proper file extensions when preserving modules
2021-11-22
Add this.load context function to load, transform and parse modules without adding them to the graph
2021-11-11
this.load context function to load, transform and parse modules without adding them to the graph (#4234)Support static class initialization blocks
2021-11-01
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Fix an issue with the CommonJS plugin when module.exports is falsy
2021-10-25
Add a flag to more reliably identify entry points in the resolveId hook
2021-10-01
resolveId hook (#4230)Using preferConst will now show a warning with strictDeprecations: true
2021-09-22
generatedCode option to allow Rollup to use es2015 features for smaller output and more efficient helpers (#4215)preferConst will now show a warning with strictDeprecations: true (#4215)Object.assign in generated code to ensure ES5 compatibility without the need for polyfills (#4215)shimMissingExports for exports that are only used internally (#4215)Make sure moduleInfo contains complete information about imported ids in the moduleParsed hook
2021-08-23
ModuleInfo.importedIds will return null if resolvedIds[source] is undefined (@FoxDaxian and @lukastaegert)Check if after simplification, an object pattern would become an expression statement or arrow function return value
2021-08-10
Fix rendering of SystemJS export declarations initialized with a simplifiable expression
2021-08-08
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