import type { ExtractPropTypes } from 'vue';
import type OptionGroup from './option-group.vue';
export declare const optionGroupProps: {
    readonly label: {
        readonly type: import("vue").PropType<string>;
        readonly required: true;
        readonly validator: ((val: unknown) => boolean) | undefined;
        __vsPropKey: true;
    };
};
export declare type OptionGroupProps = ExtractPropTypes<typeof optionGroupProps>;
export declare type OptionGroupInstance = InstanceType<typeof OptionGroup>;