/** Two char of 't' 'b' 'c' 'l' 'r'. Example: 'lt' */
export declare type AlignPoint = string;
export interface AlignType {
    /**
     * move point of source node to align with point of target node.
     * Such as ['tr','cc'], align top right point of source node with center point of target node.
     * Point can be 't'(top), 'b'(bottom), 'c'(center), 'l'(left), 'r'(right) */
    points?: AlignPoint[];
    /**
     * offset source node by offset[0] in x and offset[1] in y.
     * If offset contains percentage string value, it is relative to sourceNode region.
     */
    offset?: number[];
    /**
     * offset target node by offset[0] in x and offset[1] in y.
     * If targetOffset contains percentage string value, it is relative to targetNode region.
     */
    targetOffset?: number[];
    /**
     * If adjustX field is true, will adjust source node in x direction if source node is invisible.
     * If adjustY field is true, will adjust source node in y direction if source node is invisible.
     */
    overflow?: {
        adjustX?: boolean | number;
        adjustY?: boolean | number;
    };
    /**
     * Whether use css right instead of left to position
     */
    useCssRight?: boolean;
    /**
     * Whether use css bottom instead of top to position
     */
    useCssBottom?: boolean;
    /**
     * Whether use css transform instead of left/top/right/bottom to position if browser supports.
     * Defaults to false.
     */
    useCssTransform?: boolean;
}
export interface AlignResult {
    points: AlignPoint[];
    offset: number[];
    targetOffset: number[];
    overflow: {
        adjustX: boolean | number;
        adjustY: boolean | number;
    };
}
export interface TargetPoint {
    clientX?: number;
    clientY?: number;
    pageX?: number;
    pageY?: number;
}
export declare type TargetType = (() => HTMLElement) | TargetPoint;