Function makeMap

src/Map.js:681–689

(size, root, ownerID, hash)

}

function makeMap(size, root, ownerID, hash) {
  const map = Object.create(MapPrototype);
  map.size = size;
  map._root = root;
  map.__ownerID = ownerID;
  map.__hash = hash;
  map.__altered = false;
  return map;
}

let EMPTY_MAP;
export function emptyMap() {