Spreading array to object not typing correctly

[tcK1]

Bug Report

🔎 Search Terms

Spread, Spreading, Array, Object, Destruct, Destructuring

🕗 Version & Regression Information

• This is the behavior in every version I tried, and I reviewed the FAQ for entries about Spreading an array to an Object.

⏯ Playground Link

Playground Link

💻 Code

const a = [1, 2, 3];
const b = { ...a };
b.pop();

🙁 Actual behavior

TS did not show that .pop() did not exist in the new variable. The new variable type has "all the properties" from the array, including the prototype functions. I guess that's why it failed to show that the function doesn't exist.

Example of the code failing:

🙂 Expected behavior

It should show values from the Object prototype and not from Array.

[MartinJohns]

Duplicate of #52060 / #9726.

[tcK1]

Thanks, @MartinJohns!