Reproduction link or steps
https://repl.rolldown.rs/#eNptkt1ugzAMhV/Fyk1bqaO7ZtrV3mFXXDQNpngLDkpMf4R49zmwdqtUBAIfx584JxlNY8rRENd4Kb5S/mZT/tVb47T0KDCo1BBj/WnjWxUrzg9e+hAFcv9k/YBz41dsBnZCgSFiQllvYMxNWBbC+yMQdjvY/1f2cERJQOyzAJZr5fTeOi3OJC3sT4FqeN1vF+rzS6nnllwLlMAHPmIEaS2DhcD44lobrRMVqUYWaghjpk1qG00pccBpa2Lwvg5nLlzgho6F3FN60lnyom5OYITFz8fchgmaGDpY3cZWmuEtLF1oBz+/7wPrMRsj7gcpYUEWHYotZmmbzUmL0JDHBAk9qpUaDtdZPQwimr3eaNW/2EOG6Ujo86akXIVBZvYIHTE11xKyZZg0gU3FRr331n3bI+pJCGp4cf2gLX7nH61MjT3qFrIjTJVRbiZlkJJO+RhZwSRm+gGSI9el
What is expected?
An almost intact version of the source with just mangled names and removed whitespace would be shorter:
let e,t;function n(){t=e}export{n as reset,t as value};What is actually happening?
However, Rolldown inlined the variable and replaces it with undefined/void 0 which is 5 characters longer:
let e;function t(){e=void 0}export{t as reset,e as value};System Info
System:
OS: Windows 10 10.0.19045
CPU: (16) x64 AMD Ryzen 7 5800X 8-Core Processor
Memory: 41.89 GB / 63.91 GB
Binaries:
Node: 24.5.0 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.22 - C:\Program Files (x86)\Yarn\bin\yarn.CMD
npm: 11.5.1 - C:\Program Files\nodejs\npm.CMD
pnpm: 11.5.3 - C:\Program Files\nodejs\pnpm.CMD
Deno: 2.5.4 - C:\Users\user\.deno\bin\deno.EXE
Browsers:
Chrome: 149.0.7827.201
Edge: Chromium (150.0.4078.48)
Firefox: 152.0 - C:\Program Files\Mozilla Firefox\firefox.exe
Internet Explorer: 11.0.19041.5794
npmPackages:
rolldown: ^1.1.4 => 1.1.4Any additional comments?
While this is not critical, it would make sense to at least introduce an option to control that behavior.
Reproduction link or steps
https://repl.rolldown.rs/#eNptkt1ugzAMhV/Fyk1bqaO7ZtrV3mFXXDQNpngLDkpMf4R49zmwdqtUBAIfx584JxlNY8rRENd4Kb5S/mZT/tVb47T0KDCo1BBj/WnjWxUrzg9e+hAFcv9k/YBz41dsBnZCgSFiQllvYMxNWBbC+yMQdjvY/1f2cERJQOyzAJZr5fTeOi3OJC3sT4FqeN1vF+rzS6nnllwLlMAHPmIEaS2DhcD44lobrRMVqUYWaghjpk1qG00pccBpa2Lwvg5nLlzgho6F3FN60lnyom5OYITFz8fchgmaGDpY3cZWmuEtLF1oBz+/7wPrMRsj7gcpYUEWHYotZmmbzUmL0JDHBAk9qpUaDtdZPQwimr3eaNW/2EOG6Ujo86akXIVBZvYIHTE11xKyZZg0gU3FRr331n3bI+pJCGp4cf2gLX7nH61MjT3qFrIjTJVRbiZlkJJO+RhZwSRm+gGSI9el
What is expected?
An almost intact version of the source with just mangled names and removed whitespace would be shorter:
What is actually happening?
However, Rolldown inlined the variable and replaces it with
undefined/void 0which is 5 characters longer:System Info
System: OS: Windows 10 10.0.19045 CPU: (16) x64 AMD Ryzen 7 5800X 8-Core Processor Memory: 41.89 GB / 63.91 GB Binaries: Node: 24.5.0 - C:\Program Files\nodejs\node.EXE Yarn: 1.22.22 - C:\Program Files (x86)\Yarn\bin\yarn.CMD npm: 11.5.1 - C:\Program Files\nodejs\npm.CMD pnpm: 11.5.3 - C:\Program Files\nodejs\pnpm.CMD Deno: 2.5.4 - C:\Users\user\.deno\bin\deno.EXE Browsers: Chrome: 149.0.7827.201 Edge: Chromium (150.0.4078.48) Firefox: 152.0 - C:\Program Files\Mozilla Firefox\firefox.exe Internet Explorer: 11.0.19041.5794 npmPackages: rolldown: ^1.1.4 => 1.1.4Any additional comments?
While this is not critical, it would make sense to at least introduce an option to control that behavior.