Once upon a time, there was a fascinating proposal on this subject: - https://github.com/sebmarkbage/ecmascript-undefined-propagation
Rather than introduce new syntax, Sebastian's proposal was to automatically propagate `undefined` values: if we're about to throw a dot-property-access-on-undefined error, we just return `undefined` instead. I could find much discussion about this here, but I did find lots of discussions about approaches involving alternative syntax.
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