export type PickerItem = {
    label: string;
    value: any;
};
type Listener = (columns: PickerItem[][]) => void;
declare class PickerServiceImpl {
    private seq;
    private pending;
    private columns;
    private listeners;
    private selection;
    private selectionListeners;
    private genId;
    private tryOpenModalWithReady;
    getSelection(id: string): number[] | undefined;
    updateSelection(id: string, indices: number[]): void;
    subscribeSelection(id: string, fn: (indices: number[]) => void): () => void;
    openPicker(options: {
        columns: PickerItem[][];
        initialIndices?: number[];
        title?: string;
        cancelLabel?: string;
        confirmLabel?: string;
        direction?: 'bottom' | 'top' | 'left' | 'right' | 'fade' | 'none' | 'ios';
    }): Promise<any[]>;
    openPickerControlled(options: {
        columns: PickerItem[][];
        initialIndices?: number[];
        title?: string;
        cancelLabel?: string;
        confirmLabel?: string;
        direction?: 'bottom' | 'top' | 'left' | 'right' | 'fade' | 'none' | 'ios';
    }): {
        id: string;
        result: Promise<any[]>;
        updateColumns: (cols: PickerItem[][]) => void;
        updateSelection: (indices: number[]) => void;
        close: () => void;
    };
    getColumns(id: string): PickerItem[][] | undefined;
    subscribe(id: string, fn: Listener): () => void;
    update(id: string, cols: PickerItem[][]): void;
    resolve(id: string, values: any[]): void;
    reject(id: string, reason?: any): void;
}
export declare const PickerService: PickerServiceImpl;
export declare const openPicker: (options: {
    columns: PickerItem[][];
    initialIndices?: number[];
    title?: string;
    cancelLabel?: string;
    confirmLabel?: string;
    direction?: "bottom" | "top" | "left" | "right" | "fade" | "none" | "ios";
}) => Promise<any[]>;
export declare const openPickerControlled: (options: {
    columns: PickerItem[][];
    initialIndices?: number[];
    title?: string;
    cancelLabel?: string;
    confirmLabel?: string;
    direction?: "bottom" | "top" | "left" | "right" | "fade" | "none" | "ios";
}) => {
    id: string;
    result: Promise<any[]>;
    updateColumns: (cols: PickerItem[][]) => void;
    updateSelection: (indices: number[]) => void;
    close: () => void;
};
export {};
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