How to use

foldl

function

in

Array

const composeList = (scope: Document, entries: Entry[]): Option<Element> => {
 const cast: Segment[] = Arr.foldl(entries, (cast, entry) => {
  return entry.depth > cast.length ? writeDeep(scope, cast, entry) : writeShallow(scope, cast, entry);
 }, []);

 return Arr.head(cast).map((segment) => segment.list);
}