/** Represents collapsible. */
declare class Collapsible {
    /** Small delay that is used to trigger CSS animations. */
    private static readonly DELAY_TIMEOUT;
    /** Button element. */
    private buttonElement;
    /** Collapsible element. */
    private collapsibleElement;
    /** Open/close animation speed in miliseconds. */
    private animationSpeed;
    /** CSS easing function for open/close animation. */
    private animationEasingFunction;
    /** Function that is called when collapsible is opened/closed. */
    private onToggle;
    /** Indicates whether collapsible is currently opened. */
    private opened;
    /** Indicates whether collapsible is currently being animated. */
    private isAnimating;
    /** Timeout id of animation timeout function. */
    private animationTimeoutId;
    /** Tiemout id of delay timeout function, that is used to trigger animations. */
    private delayTimeoutId;
    /**
     * Creates new collapsible.
     * @param buttonElement Button element.
     * @param collapsibleElement Collapsible element.
     * @param animationSpeed Open/close animation speed in miliseconds.
     * @param animationEasingFunction CSS easing function for open/close animation.
     * @param onToggle Function to be called when collapsible is opened/closed.
     */
    constructor(buttonElement: HTMLButtonElement, collapsibleElement: HTMLElement, animationSpeed: number, animationEasingFunction: string, onToggle: () => void);
    /**
     * Opens collapsible.
     * @param animate Determines whether animation should be used.
     */
    open(animate?: boolean): void;
    /**
     * Closes collapsible.
     * @param animate Determines whether animation should be used.
     */
    close(animate?: boolean): void;
    /**
     * Checks whether collapsible is opened.
     * @returns Indicates whether collapsible is opened.
     */
    isOpened(): boolean;
    /**
     * Called when button is clicked.
     */
    private onButtonClick;
    /**
     * Clears timeout functions.
     */
    private clearTimeouts;
    /**
     * Returns height of collapsible element. (After calling this method, "max-height" property is removed and must be reassigned if necessary.)
     * @returns Height of collapsible element.
     */
    private getCollapsibleElementHeight;
}
export default Collapsible;