import { BootstrapElement } from '@bootstrap-wc/core';
/**
 * `<bs-collapse>` — Bootstrap collapse (height-animated show/hide).
 *
 * @fires bs-show - before opening.
 * @fires bs-shown - after open animation.
 * @fires bs-hide - before closing.
 * @fires bs-hidden - after close animation.
 */
export declare class BsCollapse extends BootstrapElement {
    open: boolean;
    horizontal: boolean;
    private _inner;
    private _busy;
    updated(changed: Map<string, unknown>): void;
    /** Toggle open state. */
    toggle(): void;
    /** Show (open). */
    show(): void;
    /** Hide (close). */
    hide(): void;
    private _animate;
    render(): import("lit-html").TemplateResult<1>;
}
declare global {
    interface HTMLElementTagNameMap {
        'bs-collapse': BsCollapse;
    }
}
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