Show parameter quickinfo at the position of arguments

Search Terms

quickinfo,parameter

Suggestion

If you call an function with many many arguments (and maybe with same type).
It's easy to lost your mind: Where I am? What i am doing? Which parameter I'm passing?
It's helpful if show the parameter info when hover into one arguments.

Examples

declare function foo(
    p1: string,
    p2: string,
    p3: string,
    p4: string,
    p5: string
): void;

declare const a: string[]

foo(
    a[0],
    a[1], // ???
    a[2],
    a[3],
    a[4]
)

Checklist

My suggestion meets these guidelines:

• This wouldn't be a breaking change in existing TypeScript/JavaScript code
• This wouldn't change the runtime behavior of existing JavaScript code
• This could be implemented without emitting different JS based on the types of the expressions
• This isn't a runtime feature (e.g. library functionality, non-ECMAScript syntax with JavaScript output, etc.)
• This feature would agree with the rest of TypeScript's Design Goals.

The issue names no files, tests, or entry points. Start by tracing TypeScript language-service quickinfo and signature-help behavior at call arguments; done means hovering an argument identifies its corresponding parameter without changing runtime output.