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Incorrect parameter hint is highlighted when arguments contain spread syntax  #48260

Description

Bug Report

🔎 Search Terms

parameter hints spread

🕗 Version & Regression Information

  • This is the behavior in every version I tried, and I reviewed the FAQ for entries about spread

⏯ Playground Link

Playground link with relevant code

💻 Code

functionmyFn(a1: number,a2: number,a3: number){}constfirstTwoArgs=[1,2]asconst;// Put your caret here and press ctrl/cmd + shift + space// ||// \/myFn(...firstTwoArgs,);

🙁 Actual behavior

a2 is highlighted:
image

🙂 Expected behavior

a3 is highlighted

Related issues

This is not to be confused with #47327, which is about inlay hints rather than parameter hints. Though possibly the same fix might apply here as well.

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    BugA bug in TypeScriptDomain: LS: Signature HelpInformation in editor tooltips when invoking a function callHelp WantedYou can do this

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