export interface ResolveDatePickerValueFormatOptions {
    valueFormat?: string;
    format?: string;
    showTime?: boolean;
}
/**
 * 推导 DatePicker / RangePicker 落库格式。
 * 优先级：显式 valueFormat > format > showTime 兜底 datetime > 纯日期默认。
 */
export declare function resolveDatePickerValueFormat(opts: ResolveDatePickerValueFormatOptions): string;
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