Disallow Set and Map to have unknown generics in Typescript?

I noticed I forgot to add a generic for a Set in code I wrote a long time ago. It’s typed as Set<unknown>. Surprisingly, this allows me to use all the Set methods without errors. With arrays, if I type it as unknown[], it’ll throw errors. E.g.:

const set = new Set();
set.has(1);

const map = new Map();
map.has(1);

const arr = []; // Variable 'arr' implicitly has type 'any[]' in some locations where its type cannot be determined.
arr.includes(1); // Variable 'arr' implicitly has an 'any[]' type.

How can I make Set and Map also throw errors if their types are unknown?