import { type PropType, type StyleValue } from 'vue';
export interface PickerOptionKeys {
    label?: string;
    value?: string;
    children?: string;
}
export interface PickerOptionObject {
    [key: PropertyKey]: any;
}
export type PickerOption = PickerOptionObject | string | number;
export interface PickerProps {
    rootStyle?: StyleValue;
    rootClass?: string;
    columns?: PickerOption[] | PickerOption[][];
    optionKeys?: PickerOptionKeys;
    modelValue?: any;
    immediateChange?: boolean;
}
export declare const pickerProps: {
    rootStyle: PropType<StyleValue>;
    rootClass: StringConstructor;
    columns: {
        type: PropType<NonNullable<PickerOption[] | PickerOption[][] | undefined>>;
        default: () => never[];
    };
    optionKeys: PropType<PickerOptionKeys | undefined>;
    modelValue: null;
    immediateChange: {
        type: BooleanConstructor;
        default: boolean;
    };
};
export interface PickerEmits {
    (e: 'update:model-value', value: any, selectedOptions: PickerOption[], indexes: number[]): void;
}
export declare const defaultOptionKeys: {
    label: string;
    value: string;
    children: string;
};
export declare function getColumnsType(columns: PickerOption[] | PickerOption[][], optionKeys: Required<PickerOptionKeys>): "single" | "multi" | "cascader";
export declare function getValueOrLabelByOption(option: PickerOption, valueOrLabelKey: string): string | number;
export declare function getValuesByOptions(options: PickerOption[], valueKey: string): (string | number)[];
export declare function getOptionsByIndexes(indexes: number[], columns: PickerOption[] | PickerOption[][], optionKeys: Required<PickerOptionKeys>): PickerOption[];
export declare function getCascaderValidIndexes(indexes: number[], columns: PickerOption[] | PickerOption[][], optionKeys: Required<PickerOptionKeys>): number[];
export declare function getMaySingleValueByOptions(options: PickerOption[], optionKeys: Required<PickerOptionKeys>, columns: PickerOption[] | PickerOption[][]): string | number | (string | number)[];
export declare function getIndexesByValue(value: any[], columns: PickerOption[] | PickerOption[][], optionKeys: Required<PickerOptionKeys>): number[];
export declare function getInitialValue(columns: PickerOption[] | PickerOption[][], optionKeys: Required<PickerOptionKeys>): string | number | (string | number)[];