repl: add function signature hints#64610
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@hemanth every time a PR is opened and closed it pings maintainers. May I suggest verifying the branch is correct before opening a PR? |
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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| * **Keywords** (`const`, `let`, `function`, `if`, `return`, etc.): Magenta | ||
| * **Strings** (single-quoted, double-quoted, and template literals): Green | ||
| * **Numbers**: Yellow | ||
| * **Boolean literals** (`true`, `false`), `null`, `undefined`, `NaN`, | ||
| `Infinity`: Yellow | ||
| * **Regular expressions**: Red | ||
| * **Comments** (line and block): Gray |
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| * **Keywords** (`const`, `let`, `function`, `if`, `return`, etc.): Magenta | |
| * **Strings** (single-quoted, double-quoted, and template literals): Green | |
| * **Numbers**: Yellow | |
| * **Boolean literals** (`true`, `false`), `null`, `undefined`, `NaN`, | |
| `Infinity`: Yellow | |
| * **Regular expressions**: Red | |
| * **Comments** (line and block): Gray | |
| * Keywords (`const`, `let`, `function`, `if`, `return`, etc.): Magenta | |
| * Strings (single-quoted, double-quoted, and template literals): Green | |
| * Numbers: Yellow | |
| * Boolean literals (`true`, `false`), `null`, `undefined`, `NaN`, | |
| `Infinity`: Yellow | |
| * Regular expressions: Red | |
| * Comments (line and block): Gray |
jasnell
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Jul 20, 2026
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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