repl: add function signature hints#64608
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When the user types `functionName(`, display the function's parameter list as a dimmed hint below the input line. Uses the V8 Inspector protocol with throwOnSideEffect for safety. Refs: nodejs#48164 Signed-off-by: hemanth <hemanth.hm@gmail.com>
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Split from #64443 per review feedback to use idiomatic single-feature PRs.
When the user types
functionName(, the REPL displays the function's parameter list as a dimmed hint below the input line. Uses the V8 Inspector protocol withthrowOnSideEffect: truefor safety.Requires
previewto be enabled and the inspector to be available.Refs: #48164