Member mistakenly attached to expando function

[dragomirtitian]

🔎 Search Terms

expando functions members shadowed

🕗 Version & Regression Information

• This is the behavior in every version I tried

⏯ Playground Link

Playground Link

💻 Code

function X() { }
if(Math.random()) {
    const X: { test?: any } = {}
    X.test = 1
}

🙁 Actual behavior

test appears in declarations as a member of X, even though the function X is shadowed by a local variable

🙂 Expected behavior

test should not appear on X as it does not belong to it.

Additional information about the issue

Found while trying to detect expando functions in isolated declarations