JuniorTheoryCommon

Which type does TypeScript infer for `sizes`?

TypeScript

const sizes = ["S", "M"] as const;

readonly ["S", "M"]

Expecting as const only to add readonly: it also keeps each literal type, so the elements stay "S" and "M", not string.
Expecting an array of the union "M" | "S": as const also fixes the length and the order, so the result is a tuple.

Which type does TypeScript infer for sizes?