ladybird/Libraries/LibWeb/CSS/CSSNumericArray.idl

// https://drafts.css-houdini.org/css-typed-om-1/#cssnumericarray
[Exposed=(Window, Worker, PaintWorklet, LayoutWorklet)]
interface CSSNumericArray {
    iterable<CSSNumericValue>;
    readonly attribute unsigned long length;
    getter CSSNumericValue (unsigned long index);
};