Rollup Version

4.11.0

Operating System (or Browser)

any

Node Version (if applicable)

No response

Link To Reproduction

https://rollupjs.org/repl/?version=4.11.0&shareable=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

Expected Behaviour

Rollup bundles successfully. See 4.10.0 reproduction that demonstrates expected behavior: https://rollupjs.org/repl/?version=4.10.0&shareable=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

Actual Behaviour

Rollup fails with:
RollupError: Cannot reassign a variable declared with const /main.js (5:0) 3: // from an ES2015 module 4: export const foo = 1; 5: foo = 2

• This is a breaking change that was merged as a non-breaking change in this PR: Add const reassign rule #5388
• This was an unannounced breaking change and there were no release notes
• Please rollback this breaking change as it is preventing upgrade to this or any subsequent rollup version