import CwElement from '../../internal/cw-element.js';
import type { CSSResultGroup, PropertyValues } from 'lit';
/**
 * @summary Spaces its children vertically with one consistent gap.
 * @documentation https://cordwainer.dev/components/stack
 * @status experimental
 * @since 1.6
 *
 * @slot - The stack's items, laid out top to bottom in source order.
 *
 * @csspart base - The component's base wrapper, which lays out the slotted items.
 */
export default class CwStack extends CwElement {
    static styles: CSSResultGroup;
    /** The space between items, as a spacing token name. Items' own margins are kept, and add to it. */
    gap: '3x-small' | '2x-small' | 'x-small' | 'small' | 'medium' | 'large' | 'x-large' | '2x-large' | '3x-large' | '4x-large';
    /**
     * How items are aligned horizontally. `stretch` makes every item as wide as the stack; the others size each item to
     * its content and place it at the start, center or end.
     */
    align: 'stretch' | 'start' | 'center' | 'end';
    private resolvedGap;
    private resolvedAlign;
    willUpdate(changedProperties: PropertyValues<this>): void;
    render(): import("lit-html").TemplateResult<1>;
}