he/him 
if you could remove or "fix" one thing from JavaScript without any kind of ecosystem repercussions, what would it be?
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Theoretically could you add a mode to enable this in Rome? But then...I guess it’s not JavaScript anymore :/
No chance of supporting non-standard syntax (I would consider Flow and TypeScript to be "standards")
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Respect
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Except for "let" to "mut" and "===" to "==", every could be implemented as linting rules maybe? (considering that there is a proposal for immutable data structures)
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