import { ParsedValue } from '../utils/units.js';
/**
 * The state of a panel.
 * @internal
 */
export type Panel = {
    /** The minimum width the panel should have. */
    minWidth?: number;
    /** The preferred width the panel should have when initializing the panels. */
    preferredWidth?: string | number;
    /** Whether the panel is resizable. */
    resizable: boolean;
    /**
     * The order of the panel. This is needed to be able to sort the panels
     * and correctly handle conditionally rendered panels.
     */
    order: number;
    /**
     * Whether the panel is dismissed to the left or right.
     * This is used to distribute space accordingly when adding / dismissing a panel.
     */
    dismissible?: DismissOptions;
    /**
     * Callback triggered after resizing is finished with the new panel sizes of
     * all existing panels and the newly applied panel width (in px).
     */
    onResize?: (sizes: PanelSizes, width: number) => void;
};
/**
 * An object containing all the currently rendered panels and their state.
 * @internal
 */
export type Panels = Record<string, Panel>;
/**
 * The state of a resize handle.
 * @internal
 */
export type ResizeHandle = {
    order: number;
};
/**
 * Array of panels, including their unique name.
 * @internal
 */
export type PanelChildren = Array<Panel & {
    name: string;
}>;
/**
 * Array of resize handles, including their unique name.
 * @internal
 */
export type ResizeHandles = Array<ResizeHandle & {
    name: string;
}>;
/**
 * Array of supported units to specify the size of a panel.
 * @public
 */
export declare const panelSizeUnits: readonly ["px", "fr", "%", "vw", "rem"];
/**
 * The supported units to specify the size of a panel.
 * @public
 */
export type PanelSizeUnit = (typeof panelSizeUnits)[number];
/**
 * The size of a panel.
 * @public
 */
export type PanelSize = number | `${number}${PanelSizeUnit}`;
/**
 * An object of panel keys and the panel's current size in fractions or pixels if they're not resizable.
 * @internal
 */
export type PanelSizesWithUnit = Record<string, ParsedValue>;
/**
 * An object of panel keys and the panel's current size in all available units.
 * @internal
 */
export type PanelSizes = Record<string, {
    [key in 'px' | '%']: number;
}>;
/**
 * Possible options for dismissing a panel.
 * @internal
 */
export type DismissOptions = true | false | 'left' | 'right';