no-underscore-dangle to check function params

What rule do you want to change? no-underscore-dangle

Does this change cause the rule to produce more or fewer warnings? More warnings

How will the change be implemented? (New option, new default behavior, etc.)? The updated rule will check if param Identifiers of FunctionDeclarations and ArrowFunctionExpressions have dangling underscores.

I suggest that underscore dangle in these situations is disallowed by default and can be configured using the same pattern as "allowAfterThis" and "allowAfterSuper".

Please provide some example code that this change will affect:

const test = (_arg) => { };
function myfunc(_arg) { };

What does the rule currently do for this code? No error thrown.

What will the rule do after it’s changed? Throw an error because the function params have dangling underscores.

Are you willing to submit a pull request to implement this change? Yes

[kaicataldo]

I’ll champion this. We still need support from two other team members before we can mark this as accepted.

[anikethsaha]

Marking this as accepted as there are 3 +1 from team members.

I think allowFunctionParams might be a good approach and name which will be true by default as mentioned above