import type { TreeProps, TypeTreeState } from '../interface';
import type { Styles } from '../../common';
export declare function formatCSSUnit(unit: string | number): string | number;
export default function useTreeStyles(props: TreeProps, state: TypeTreeState): {
    treeClasses: import("@vue/composition-api").ComputedRef<string[]>;
    treeContentStyles: import("@vue/composition-api").ComputedRef<Styles>;
    scrollStyles: import("@vue/composition-api").ComputedRef<Styles>;
    cursorStyles: import("@vue/composition-api").ComputedRef<Styles>;
};
