Array expression can't be directly spread into rest-only signature with const modifier

[Andarist]

Bug Report

🔎 Search Terms

array spread rest const

🕗 Version & Regression Information

• This is only relevant for 5.0+ since it involves const modifier

⏯ Playground Link

Playground link with relevant code

💻 Code

declare function foo<const T extends readonly unknown[]>(...args: T): T;
foo(...[1, 'bar']); // should be OK
foo(true, ...[1, 'bar']); // OK

declare function foo2<T extends readonly unknown[]>(...args: T): T;
foo2(...[1, 'bar']); // OK
foo2(true, ...[1, 'bar']); // OK

declare function foo3<T extends unknown[]>(...args: T): T;
foo3(...[1, 'bar']); // OK
foo3(true, ...[1, 'bar']); // OK

🙁 Actual behavior

the first call is not allowed

🙂 Expected behavior

the first call should be allowed since the rest of the calls are allowed