import { PropType } from 'vue';
import { RadioOption } from './ZRadioGroup.vue';
/**
 * ZRadioGroupButton — button group variant of ZRadioGroup.
 * Shares the same props interface as ZRadioGroup, with variant defaulting to 'button'.
 * Supports string[] options and v1-compat value/onChange props.
 */
export declare const ZRadioGroupButton: import('vue').DefineComponent<import('vue').ExtractPropTypes<{
    modelValue: StringConstructor;
    /** v1 compat: alias for modelValue */
    value: StringConstructor;
    options: {
        type: PropType<(RadioOption | string)[]>;
        required: true;
    };
    disabled: BooleanConstructor;
    size: {
        type: PropType<"sm" | "default" | "small">;
        default: string;
    };
    /** v1 compat: called when selection changes */
    onChange: PropType<(value: string) => void>;
}>, () => import("vue/jsx-runtime").JSX.Element, {}, {}, {}, import('vue').ComponentOptionsMixin, import('vue').ComponentOptionsMixin, {
    'update:modelValue': (v: string) => true;
    /** v1 compat: alias for update:modelValue */
    onChange: (v: string) => true;
}, string, import('vue').PublicProps, Readonly<import('vue').ExtractPropTypes<{
    modelValue: StringConstructor;
    /** v1 compat: alias for modelValue */
    value: StringConstructor;
    options: {
        type: PropType<(RadioOption | string)[]>;
        required: true;
    };
    disabled: BooleanConstructor;
    size: {
        type: PropType<"sm" | "default" | "small">;
        default: string;
    };
    /** v1 compat: called when selection changes */
    onChange: PropType<(value: string) => void>;
}>> & Readonly<{
    onOnChange?: ((v: string) => any) | undefined;
    "onUpdate:modelValue"?: ((v: string) => any) | undefined;
}>, {
    size: "small" | "default" | "sm";
    disabled: boolean;
}, {}, {}, {}, string, import('vue').ComponentProvideOptions, true, {}, any>;
export default ZRadioGroupButton;