declare namespace LeaderLine {
  export type Element = HTMLElement | SVGElement;
  export type PlugType = 'disc' | 'square' | 'arrow1' | 'arrow2' | 'arrow3' | 'hand' | 'crosshair' | 'behind';
  export type PathType = 'straight' | 'arc' | 'fluid' | 'magnet' | 'grid';
  export type SocketType = 'top' | 'right' | 'bottom' | 'left' | 'auto';
  export type ShowEffectName = 'none' | 'fade' | 'draw';
  export type AreaAnchorShape = 'rect' | 'circle' | 'polygon';

  export interface LabelFontOptions {
    fontFamily?: any;
    fontStyle?: any;
    fontVariant?: any;
    fontWeight?: any;
    fontStretch?: any;
    fontSize?: any;
    fontSizeAdjust?: any;
    kerning?: any;
    letterSpacing?: any;
    wordSpacing?: any;
    textDecoration?: any;
  }

  export interface Options {
    end?: Element | AnchorAttachment;
    start?: Element | AnchorAttachment;

    size?: number;
    color?: string;
    path?: PathType;
    startSocket?: SocketType;
    endSocket?: SocketType;
    startSocketGravity?: number | string | Array<string | number>;
    endSocketGravity?: number | string | Array<string | number>;

    startPlug?: PlugType;
    endPlug?: PlugType;
    startPlugColor?: string;
    endPlugColor?: string;

    startPlugSize?: number;
    endPlugSize?: number;
    outline?: boolean;
    outlineColor?: string;
    outlineSize?: number;

    startPlugOutline?: boolean;
    endPlugOutline?: boolean;

    startPlugOutlineColor?: string;
    endPlugOutlineColor?: string;

    startPlugOutlineSize?: number;
    endPlugOutlineSize?: number;

    startLabel?: string | LeaderLine.LabelAttachment;
    middleLabel?: string | LeaderLine.LabelAttachment;
    endLabel?: string | LeaderLine.LabelAttachment;

    dash?: boolean | DashOptions;
    gradient?: boolean | GradientOptions;
    dropShadow?: boolean | DropShadowOptions;

    show?: boolean;
    hide?: boolean;
  }

  export interface DashOptions {
    len?: number | string;
    gap?: number | string;

    animation?: boolean | AnimationOptions;
  }

  export interface GradientOptions {
    startColor?: string;
    endColor?: string;
  }

  export interface DropShadowOptions {
    dx?: number;
    dy?: number;
    blur?: number;
    color?: string;
    opacity?: number;
  }

  export interface AnimationOptions {
    timing?: 'ease' | 'linear' | 'ease-in' | 'ease-out' | 'ease-in-out' | Array<number>;
    duration?: number;
  }

  export interface PointAnchorOptions {
    x?: string | number;
    y?: string | number;
    element?: Element;
  }

  export interface AreaAnchorOptions {
    x?: number | string;
    y?: number | string;
    shape?: AreaAnchorShape;
    width?: number | string;
    radius?: number;
    height?: number | string;
    element?: Element;
    points?: Array<[number|string, number|string]>;
    color?: string;
    fillColor?: string;
    size?: number;
    dash?: boolean | LeaderLine.DashOptions;
  }

  export interface MouseHoverAnchorOptions {
    element?: Element;
    showEffectName?: ShowEffectName,
    animOptions?: AnimationOptions,
    style?: { [key: string]: any };
    hoverStyle?: { [key: string]: any };
    onSwitch?: (event: MouseEvent) => any;
  }

  export interface CaptionLabelOptions extends LabelFontOptions {
    text?: string;
    offset?: Array<number>;
    lineOffset?: number;
    color?: string;
    outlineColor?: string;
  }

  export interface PathLabelOptions extends LabelFontOptions {
    text?: string;
    lineOffset?: number;
    color?: string;
    outlineColor?: string;
  }

  export class LabelAttachment { }

  export class AnchorAttachment { }

}

declare class LeaderLine {
  end: Element | LeaderLine.AnchorAttachment;
  start: Element | LeaderLine.AnchorAttachment;
  size: number;
  color: string;
  startSocketGravity: string;
  endSocketGravity: string;
  startPlugColor: string;
  endPlugColor: string;
  startPlugSize: number;
  endPlugSize: number;
  outline: boolean;
  outlineColor: string;
  outlineSize: number;
  startPlugOutline: boolean;
  endPlugOutline: boolean
  startPlugOutlineColor: string;
  endPlugOutlineColor: string;
  startPlugOutlineSize: number;
  endPlugOutlineSize: number;
  path: LeaderLine.PathType;
  startSocket: LeaderLine.SocketType;
  endSocket: LeaderLine.SocketType;
  startPlug: LeaderLine.PlugType;
  endPlug: LeaderLine.PlugType;
  dash: boolean | LeaderLine.DashOptions;
  gradient: boolean | LeaderLine.GradientOptions;
  dropShadow: boolean;
  startLabel: string | LeaderLine.LabelAttachment;
  endLabel: string | LeaderLine.LabelAttachment;
  middleLabel: string | LeaderLine.LabelAttachment;

  constructor(options: LeaderLine.Options);
  constructor(start: Element | LeaderLine.AnchorAttachment, end: Element | LeaderLine.AnchorAttachment, options?: LeaderLine.Options);

  static pointAnchor(options: LeaderLine.PointAnchorOptions): LeaderLine.AnchorAttachment;
  static pointAnchor(element: LeaderLine.Element, options?: LeaderLine.PointAnchorOptions): LeaderLine.AnchorAttachment;

  static areaAnchor(options: LeaderLine.AreaAnchorOptions): LeaderLine.AnchorAttachment;
  static areaAnchor(element: LeaderLine.Element, options?: LeaderLine.AreaAnchorOptions): LeaderLine.AnchorAttachment;
  static areaAnchor(element: LeaderLine.Element, shape?: LeaderLine.AreaAnchorShape, options?: LeaderLine.AreaAnchorOptions): LeaderLine.AnchorAttachment;

  static mouseHoverAnchor(options: LeaderLine.MouseHoverAnchorOptions): LeaderLine.AnchorAttachment;
  static mouseHoverAnchor(element: LeaderLine.Element, showEffectName?: LeaderLine.ShowEffectName, options?: LeaderLine.MouseHoverAnchorOptions): LeaderLine.AnchorAttachment;

  static captionLabel(options: any): LeaderLine.LabelAttachment;
  static captionLabel(text?: string, options?: any): LeaderLine.LabelAttachment;

  static pathLabel(options: LeaderLine.PathLabelOptions): LeaderLine.LabelAttachment;
  static pathLabel(text: string, options?: LeaderLine.PathLabelOptions): LeaderLine.LabelAttachment;

  hide(showEffectName?: LeaderLine.ShowEffectName, animOptions?: LeaderLine.AnimationOptions): void;
  show(showEffectName?: LeaderLine.ShowEffectName, animOptions?: LeaderLine.AnimationOptions): void;
  remove(): void;
  position(): void;
  setOptions(options: LeaderLine.Options): void;

}