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feat: add legacy inconsistent cjs interop#464
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sapphi-red merged 2 commits intorolldown-vitefrom Oct 27, 2025
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Description
Adds
legacy.inconsistentCjsInterop: trueoption to opt-in to the previous inconsistent behavior.In normal Vite, Vite had inconsistent CJS interop behavior. This was due to the different behavior of esbuild and the Rollup commonjs plugin. rolldown-vite uses Rolldown for both the dependency optimization in dev and the production build, which aligns the behavior to esbuild.
See https://rolldown.rs/in-depth/bundling-cjs#ambiguous-default-import-from-cjs-modules for more details about how rolldown handles it.
requires rolldown/rolldown#6687
refs #444
fixes #457
fixes #458