import type { Component, ComponentPublicInstance, ComputedRef, PropType, Ref, VNode, VNodeTypes } from 'vue';
export declare type DirectionType = 'left' | 'right' | 'top' | 'bottom';
export declare type PaddingCSSProperties = 'padding-left' | 'padding-right' | 'padding-top' | 'padding-bottom';
export declare const DIRECTION_LEFT = "left";
export declare const DIRECTION_RIGHT = "right";
export declare const DIRECTION_TOP = "top";
export declare const DIRECTION_BOTTOM = "bottom";
export declare const allDirections: DirectionType[];
export declare const resizeBoxProps: {
    readonly width: {
        readonly type: PropType<number>;
        readonly required: false;
        readonly validator: ((val: unknown) => boolean) | undefined;
        __epPropKey: true;
    };
    readonly height: {
        readonly type: PropType<number>;
        readonly required: false;
        readonly validator: ((val: unknown) => boolean) | undefined;
        __epPropKey: true;
    };
    readonly component: import("@inte-cloud/lit-element/es/utils").EpPropFinalized<StringConstructor, unknown, unknown, "div", boolean>;
    readonly directions: import("@inte-cloud/lit-element/es/utils").EpPropFinalized<(new (...args: any[]) => ("top" | "bottom" | "left" | "right")[]) | (() => ("top" | "bottom" | "left" | "right")[]) | ((new (...args: any[]) => ("top" | "bottom" | "left" | "right")[]) | (() => ("top" | "bottom" | "left" | "right")[]))[], unknown, unknown, () => string[], boolean>;
};
export declare function useState<T>(defaultValue?: T): [Ref<T>, (newValue: T) => void];
export declare function useMergeState<T, E = T | undefined>(defaultValue: T, props: {
    value: E;
}): [ComputedRef<T>, (val: E) => void, Ref<T>];
export declare const isComponentInstance: (value: any) => value is ComponentPublicInstance<{}, {}, {}, {}, {}, {}, {}, {}, false, import("vue").ComponentOptionsBase<any, any, any, any, any, any, any, any, any, {}>>;
export declare const isComponent: (vn: VNode, type?: VNodeTypes) => type is Component<any, any, any, import("vue").ComputedOptions, import("vue").MethodOptions>;
export declare enum ShapeFlags {
    ELEMENT = 1,
    FUNCTIONAL_COMPONENT = 2,
    STATEFUL_COMPONENT = 4,
    COMPONENT = 6,
    TEXT_CHILDREN = 8,
    ARRAY_CHILDREN = 16,
    SLOTS_CHILDREN = 32,
    TELEPORT = 64,
    SUSPENSE = 128,
    COMPONENT_SHOULD_KEEP_ALIVE = 256,
    COMPONENT_KEPT_ALIVE = 512
}
export declare const isArrayChildren: (vn: VNode, children: VNode['children']) => children is VNode<import("vue").RendererNode, import("vue").RendererElement, {
    [key: string]: any;
}>[];
export declare const isSlotsChildren: (vn: VNode, children: VNode['children']) => children is Readonly<{
    [name: string]: import("vue").Slot | undefined;
}>;
export declare const getFirstComponent: (children: VNode[] | undefined) => VNode | undefined;