import { Ref, ToRefs } from 'vue';
import { Nullable } from '../../../../shared/dist/esm/index';
type GenericSelectValueType<T> = T | T[] | undefined;
/**
 * Common setup for FormSelectBase wrapping selector components
 */
export declare function useFormSelectChildInternals<T>(params: {
    props: ToRefs<{
        modelValue?: GenericSelectValueType<T>;
        multiple?: boolean;
    }>;
    emit: {
        (e: 'update:modelValue', val: GenericSelectValueType<T>): void;
    };
    /**
     * @see {useWrappingContainerHiddenCount()}
     */
    dynamicVisibility?: {
        elementToWatchForChanges: Ref<Nullable<HTMLElement>>;
        itemContainer: Ref<Nullable<HTMLElement>>;
    };
}): {
    selectedValue: import('vue').WritableComputedRef<GenericSelectValueType<T>, GenericSelectValueType<T>>;
    hiddenSelectedItemCount: Ref<number, number>;
    isArrayValue: (v: GenericSelectValueType<T>) => v is T[];
    isMultiItemArrayValue: (v: GenericSelectValueType<T>) => v is T[];
    firstItem: (v: NonNullable<GenericSelectValueType<T>>) => T;
};
export {};