JuniorTheoryCommon

Which type does the name `Size` stand for?

TypeScript

const sizes = ["S", "M"] as const;
type Size = (typeof sizes)[number];

"M" | "S"

Expecting the tuple readonly ["S", "M"]: that is typeof sizes itself, and [number] takes the type of any one element, which gives the union "M" | "S".
Expecting string: thanks to as const the elements keep their literal types, so the element type is "M" | "S", not string.

JuniorTheoryCommon

TypeScript

const sizes = ["S", "M"] as const;
type Size = (typeof sizes)[number];

"M" | "S"

Expecting the tuple readonly ["S", "M"]: that is typeof sizes itself, and [number] takes the type of any one element, which gives the union "M" | "S".
Expecting string: thanks to as const the elements keep their literal types, so the element type is "M" | "S", not string.

Which type does the name Size stand for?