Function modifyLayout

src/core/layout.ts:134–150

(
  layout: Layout,
  layoutItem: LayoutItem
)

 * @returns New layout with the item replaced
 */
export function modifyLayout(
  layout: Layout,
  layoutItem: LayoutItem
): LayoutItem[] {
  const newLayout: LayoutItem[] = new Array(layout.length);
  for (let i = 0; i < layout.length; i++) {
    const item = layout[i];
    if (item !== undefined) {
      if (layoutItem.i === item.i) {
        newLayout[i] = layoutItem;
      } else {
        newLayout[i] = item;
      }
    }
  }
  return newLayout;
}

/**
 * Apply a transformation to a layout item.