/**
 * Merge user options with defaults. Throws if container missing.
 * @param {JsMindRuntimeOptions} options
 * @returns {JsMindRuntimeOptions}
 */
export function merge_option(options: JsMindRuntimeOptions): JsMindRuntimeOptions;
export type JsMindRuntimeOptions = {
    container: string | HTMLElement;
    editable?: boolean;
    theme?: (string | null);
    mode?: ("full" | "side");
    support_html?: boolean;
    log_level?: "debug" | "info" | "warn" | "error" | "disable";
    view?: {
        engine?: "canvas" | "svg";
        enable_device_pixel_ratio?: boolean;
        hmargin?: number;
        vmargin?: number;
        line_width?: number;
        line_color?: string;
        line_style?: "curved" | "straight";
        custom_line_render?: (this: object, arg: {
            ctx: CanvasRenderingContext2D | SVGPathElement;
            start_point: {
                x: number;
                y: number;
            };
            end_point: {
                x: number;
                y: number;
            };
        }) => void;
        draggable?: boolean;
        hide_scrollbars_when_draggable?: boolean;
        node_overflow?: "hidden" | "wrap" | "visible";
        zoom?: {
            min?: number;
            max?: number;
            step?: number;
            mask_key?: number;
        };
        custom_node_render?: (null | ((jm: import("./jsmind.js").default, ele: HTMLElement, node: import("./jsmind.node.js").Node) => void));
        expander_style?: "char" | "number";
    };
    layout?: {
        hspace?: number;
        vspace?: number;
        pspace?: number;
        cousin_space?: number;
    };
    default_event_handle?: {
        enable_mousedown_handle?: boolean;
        enable_click_handle?: boolean;
        enable_dblclick_handle?: boolean;
        enable_mousewheel_handle?: boolean;
    };
    shortcut?: {
        enable?: boolean;
        handles?: Record<string, (jm: import("./jsmind.js").default, e: KeyboardEvent) => void>;
        mapping?: Record<string, number | number[]>;
        id_generator?: () => string;
    };
    plugin?: Record<string, object>;
};