Function updateNode

src/Map.js:733–760

(
  node,
  ownerID,
  shift,
  keyHash,
  key,
  value,
  didChangeSize,
  didAlter
)

}

function updateNode(
  node,
  ownerID,
  shift,
  keyHash,
  key,
  value,
  didChangeSize,
  didAlter
) {
  if (!node) {
    if (value === NOT_SET) {
      return node;
    }
    SetRef(didAlter);
    SetRef(didChangeSize);
    return new ValueNode(ownerID, keyHash, [key, value]);
  }
  return node.update(
    ownerID,
    shift,
    keyHash,
    key,
    value,
    didChangeSize,
    didAlter
  );
}

function isLeafNode(node) {
  return (