import { Layout } from '../core';
/**
 * A layout similar to overlay_layout except only one child pane is visible at a time.
 * That child pane has its size set to the size of the parent pane. The other children panes
 * are made invisible until they are the active pane.
 *
 * The layoutArg for each child is a boolean, true if it should be the active pane. One is chosen
 * arbitrarily if multiple panes have true layoutArg.
 */
export declare function newCardLayout(): Layout;