// Type definitions for @svgdotjs version 3.x
// Project: @svgdotjs/svg.js

// trick to keep reference to Array build-in type
declare class BuiltInArray<T> extends Array<T> {}

// trick to have nice attribute list for CSS
declare type CSSStyleName = Exclude<
  keyof CSSStyleDeclaration,
  'parentRule' | 'length'
>

// create our own style declaration that includes css vars
interface CSSStyleDeclarationWithVars extends CSSStyleDeclaration {
  [key: `--${string}`]: string
}

declare module '@svgdotjs/svg.js' {
  function SVG(): Svg
  /**
   * @param selectorOrHtml pass in a css selector or an html/svg string
   * @param isHTML only used if first argument is an html string. Will treat the svg/html as html and not svg
   */
  function SVG(selectorOrHtml: QuerySelector, isHTML?: boolean): Element
  function SVG<T>(el: T): SVGTypeMapping<T>
  function SVG(domElement: HTMLElement): Element

  function eid(name: string): string
  function get(id: string): Element

  function create(name: string): any
  function extend(parent: object, obj: object): void
  function invent(config: object): any
  function adopt(node: HTMLElement): Element
  function prepare(element: HTMLElement): void
  function getClass(name: string): Element

  function on(
    el: Node | Window,
    events: string,
    cb: EventListener,
    binbind?: any,
    options?: AddEventListenerOptions
  ): void
  function on(
    el: Node | Window,
    events: Event[],
    cb: EventListener,
    binbind?: any,
    options?: AddEventListenerOptions
  ): void

  function off(
    el: Node | Window,
    events?: string,
    cb?: EventListener | number,
    options?: AddEventListenerOptions
  ): void
  function off(
    el: Node | Window,
    events?: Event[],
    cb?: EventListener | number,
    options?: AddEventListenerOptions
  ): void

  function dispatch(
    node: Node | Window,
    event: Event,
    data?: object,
    options?: object
  ): Event

  function find(query: QuerySelector): List<Element>
  function findOne(query: QuerySelector): Element | null

  function getWindow(): Window
  function registerWindow(win: Window, doc: Document): void
  function restoreWindow(): void
  function saveWindow(): void
  function withWindow(
    win: Window,
    fn: (win: Window, doc: Document) => void
  ): void

  let utils: {
    map(array: any[], block: Function): any
    filter(array: any[], block: Function): any
    radians(d: number): number
    degrees(r: number): number
    camelCase(s: string): string
    unCamelCase(s: string): string
    capitalize(s: string): string
    // proportionalSize
    // getOrigin
  }

  let defaults: {
    attrs: {
      'fill-opacity': number
      'stroke-opacity': number
      'stroke-width': number
      'stroke-linejoin': string
      'stroke-linecap': string
      fill: string
      stroke: string
      opacity: number
      x: number
      y: number
      cx: number
      cy: number
      width: number
      height: number
      r: number
      rx: number
      ry: number
      offset: number
      'stop-opacity': number
      'stop-color': string
      'font-size': number
      'font-family': string
      'text-anchor': string
    }
    timeline: {
      duration: number
      ease: string
      delay: number
    }
  }

  // let easing: {
  //     '-'(pos: number): number;
  //     '<>'(pos: number): number;
  //     '>'(pos: number): number;
  //     '<'(pos: number): number;
  //     bezier(x1: number, y1: number, x2: number, y2: number): (t: number) => number;
  //     steps(steps: number, stepPosition?: "jump-start"|"jump-end"|"jump-none"|"jump-both"|"start"|"end"): (t: number, beforeFlag?: boolean) => number;
  // }

  let regex: {
    delimiter: RegExp
    dots: RegExp
    hex: RegExp
    hyphen: RegExp
    isBlank: RegExp
    isHex: RegExp
    isImage: RegExp
    isNumber: RegExp
    isPathLetter: RegExp
    isRgb: RegExp
    numberAndUnit: RegExp
    numbersWithDots: RegExp
    pathLetters: RegExp
    reference: RegExp
    rgb: RegExp
    transforms: RegExp
    whitespace: RegExp
  }

  let namespaces: {
    ns: string
    xmlns: string
    xlink: string
    svgjs: string
  }

  interface LinkedHTMLElement extends HTMLElement {
    instance: Element
  }

  // ************ Standard object/option/properties declaration ************

  type AttrNumberValue = number | 'auto'

  /**
   * The SVG core attributes are all the common attributes that can be specified on any SVG element.
   * More information see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/Core
   */
  interface CoreAttr {
    id?: string
    lang?: string
    tabindex?: number
    'xml:lang'?: string
  }

  /**
   * The SVG styling attributes are all the attributes that can be specified on any SVG element to apply CSS styling effects.
   * More information see https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/Styling
   */
  interface StylingAttr {
    /**
     * a valid HTML class name
     */
    class?: string
    /**
     * SVG css style string format. It all can be find here https://www.w3.org/TR/SVG/styling.html#StyleAttribute
     */
    style?: string
  }

  /**
   * A global attribute that can be use with any svg element
   */
  interface GlobalAttr extends CoreAttr, StylingAttr {}

  // TODO: implement SVG Presentation Attributes. See https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/Presentation

  interface PathBaseAttr {
    pathLength?: number
  }

  interface RadiusAxisAttr {
    rx?: AttrNumberValue
    ry?: AttrNumberValue
  }

  /**
   * SVG Rectangle attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/rect
   */
  interface RectAttr extends RadiusAxisAttr, PathBaseAttr, GlobalAttr {
    x?: number
    y?: number
    width: AttrNumberValue
    height: AttrNumberValue
  }

  /**
   * SVG Line attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/line
   */
  interface LineAttr extends PathBaseAttr, GlobalAttr {
    x1?: number
    y1?: number
    x2?: number
    y2?: number
  }

  /**
   * SVG Circle attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/circle
   */
  interface CircleAttr extends PathBaseAttr, GlobalAttr {
    cx?: number | string
    cy?: number | string
    r?: number | string
  }

  /**
   * SVG Ellipse attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/ellipse
   */
  interface EllipseAttr extends PathBaseAttr, GlobalAttr {
    cx?: number | string
    cy?: number | string
    rx?: number | string
    ry?: number | string
  }

  /**
   * SVG Path attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/path
   */
  interface PathAttr extends PathBaseAttr, GlobalAttr {
    d?: string
  }

  /**
   * SVG Path attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/polygon
   * or https://developer.mozilla.org/en-US/docs/Web/SVG/Element/polyline
   */
  interface PolyAttr extends PathBaseAttr, GlobalAttr {
    points?: string
  }

  /**
   * SVG Text attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/text
   */
  interface TextAttr extends GlobalAttr {
    x?: number | string
    y?: number | string
    dx?: number | string
    dy?: number | string
    lengthAdjust?: 'spacing' | 'spacingAndGlyphs'
    textLength?: number | string
    // see https://developer.mozilla.org/en-US/docs/Web/API/SVGNumberList
    // or https://developer.mozilla.org/en-US/docs/Web/SVG/Content_type#List-of-Ts
    // TODO: tbd
    // rotate?: string
  }

  /**
   * SVG TextPath attribute, more information see https://developer.mozilla.org/en-US/docs/Web/SVG/Element/textPath
   */
  interface TextPathAttr extends GlobalAttr {
    href?: string
    lengthAdjust?: 'spacing' | 'spacingAndGlyphs'
    method?: 'align' | 'stretch'
    side?: 'left' | 'right'
    spacing?: 'auto' | 'exact'
    startOffset?: number | string
    textLength?: number | string
    // See https://developer.mozilla.org/en-US/docs/Web/SVG/Element/textPath
    // TODO: tbd as there is no reference to see the detail of how it would look like
    // path?: string
  }

  /**
   * A generic Dom Box object.
   * Notice: DOMRect is still in experiment state and document is not complete (Draft)
   * See https://developer.mozilla.org/en-US/docs/Web/API/DOMRect
   */
  interface DOMRect {
    x?: number
    y?: number
    width?: number
    height?: number
    top?: number
    right?: number
    bottom?: number
    left?: number
  }

  // ************ SVG.JS generic Conditional Types declaration ************

  type SVGTypeMapping<T> = T extends HTMLElement
    ? Dom
    : T extends SVGSVGElement
    ? Svg
    : T extends SVGRectElement
    ? Rect
    : T extends SVGCircleElement
    ? Circle
    : T extends SVGPathElement
    ? Path
    : T extends SVGTextElement
    ? Text
    : T extends SVGTextPathElement
    ? TextPath
    : T extends SVGGElement
    ? G
    : T extends SVGLineElement
    ? Line
    : T extends SVGPolylineElement
    ? Polyline
    : T extends SVGPolygonElement
    ? Polygon
    : T extends SVGGradientElement
    ? Gradient
    : T extends SVGImageElement
    ? Image
    : T extends SVGEllipseElement
    ? Ellipse
    : T extends SVGMaskElement
    ? Mask
    : T extends SVGMarkerElement
    ? Marker
    : T extends SVGClipPathElement
    ? ClipPath
    : T extends SVGTSpanElement
    ? Tspan
    : T extends SVGSymbolElement
    ? Symbol
    : T extends SVGUseElement
    ? Use
    : Element

  // element type as string
  type SvgType = 'svg'
  type ClipPathType = 'clipPath'
  type TextType = 'text'
  type GType = 'g'
  type AType = 'a'

  type ParentElement = SvgType | GType | AType

  type AttrTypeMapping<T> = T extends Rect ? RectAttr : GlobalAttr

  type ElementAlias =
    | Dom
    | Svg
    | Rect
    | Line
    | Polygon
    | Polyline
    | Ellipse
    | ClipPath
    | Use
    | Text
    | Path
    | TextPath
    | Circle
    | G
    | Gradient
    | Image
    | Element

  type ElementTypeAlias =
    | typeof Dom
    | typeof Svg
    | typeof Rect
    | typeof Line
    | typeof Polygon
    | typeof Polyline
    | typeof Ellipse
    | typeof ClipPath
    | typeof Use
    | typeof Text
    | typeof Path
    | typeof TextPath
    | typeof Circle
    | typeof G
    | typeof Gradient
    | typeof Image
    | typeof Element

  type AttributeReference =
    | 'href'
    | 'marker-start'
    | 'marker-mid'
    | 'marker-end'
    | 'mask'
    | 'clip-path'
    | 'filter'
    | 'fill'

  // ************* SVG.JS Type Declaration *************
  // ********** Locate in directory src/types **********

  // SVGArray.js
  // Notice: below class is defined the name as `Array` rather than `SVGArray`.
  // The purpose of giving the name as `Array` is to allow it to be aligned with SVG.JS export type
  // as SVG.JS export it as `Array` (to be precise `SVG.Array`) so reading through JS documentation
  // should be more straightforward.
  /**
   * Type alias to native array.
   *
   * **Caution**: If argument is a string, generic type must be a number or array of number and
   * the string is format as a concatenate of number separate by comma.
   * This is expensive to build runtime type check for such as case so please use it carefully.
   */
  type ArrayAlias<T> = BuiltInArray<T> | T[] | string

  class Array<T> extends BuiltInArray<T> {
    constructor(array?: ArrayAlias<T>)

    /**
     * Return array of generic T however it's flatten array by 1 level as it using `apply` function.
     * For example: if T is a `number[]` which is the number of 2 dimension `Array<number[]>` the result will be `number[]`
     */
    toArray(): any[]
    /**
     * return a concatenated string of each element separated by space
     */
    toString(): string
    valueOf(): T[]
    clone(): Array<T>
    toSet(): Set<T>
    parse(a?: ArrayAlias<T>): T[]
    to(a: any): Morphable
  }

  // point.js
  class Point {
    x: number
    y: number
    constructor()
    constructor(position: CoordinateXY)
    constructor(point: Point)
    constructor(x: number, y?: number)
    clone(): Point
    transform(matrix: Matrix): this
    transformO(matrix: Matrix): this
    toArray(): ArrayXY
  }

  // pointArray.js
  class PointArray extends Array<ArrayXY> {
    constructor()
    constructor(array?: ArrayAlias<ArrayXY> | number[])

    toLine(): LineAttr
    transform(m: Matrix | MatrixLike): PointArray
    move(x: number, y: number): this
    size(width: number, height: number): this
    bbox(): Box
    to(a: any): Morphable
    toString(): string
  }

  // SVGNumber.js
  type NumberUnit = [number, string]

  class Number {
    constructor()
    constructor(value: Number)
    constructor(value: string)
    constructor(value: number, unit?: any)
    constructor(n: NumberUnit)

    value: number
    unit: any

    toString(): string
    toJSON(): object // same as toString
    toArray(): NumberUnit
    valueOf(): number
    plus(number: NumberAlias): Number
    minus(number: NumberAlias): Number
    times(number: NumberAlias): Number
    divide(number: NumberAlias): Number
    convert(unit: string): Number
    to(a: any): Morphable
  }

  type NumberAlias = Number | number | string

  // PathArray.js

  type LineCommand =
    | ['M' | 'm' | 'L' | 'l', number, number]
    | ['H' | 'h' | 'V' | 'v', number]
    | ['Z' | 'z']

  type CurveCommand =
    // Bezier Curves
    | ['C' | 'c', number, number, number, number, number, number]
    | ['S' | 's' | 'Q' | 'q', number, number, number, number]
    | ['T' | 't', number, number]
    // Arcs
    | ['A' | 'a', number, number, number, number, number, number, number]

  type PathCommand = LineCommand | CurveCommand

  type PathArrayAlias = PathArray | PathCommand[] | (string | number)[] | string

  class PathArray extends Array<PathCommand> {
    constructor()
    constructor(d: ArrayAlias<PathCommand> | PathArrayAlias)

    move(x: number, y: number): this
    size(width: number, height: number): this
    equalCommands(other: PathArray): boolean
    morph(pa: PathArray): this
    parse(array?: ArrayAlias<PathCommand> | PathArrayAlias): PathCommand[]
    bbox(): Box
    to(a: any): Morphable
  }

  // Matrix.js
  interface TransformData {
    origin?: number[]
    scaleX?: number
    scaleY?: number
    shear?: number
    rotate?: number
    translateX?: number
    translateY?: number
    originX?: number
    originY?: number
  }

  interface MatrixLike {
    a?: number
    b?: number
    c?: number
    d?: number
    e?: number
    f?: number
  }

  interface MatrixExtract extends TransformData, MatrixLike {}

  type FlipType = 'both' | 'x' | 'y' | boolean
  type ArrayXY = [number, number]
  type CoordinateXY = ArrayXY | { x: number; y: number }

  interface MatrixTransformParam {
    rotate?: number
    flip?: FlipType
    skew?: ArrayXY | number
    skewX?: number
    skewY?: number
    scale?: ArrayXY | number
    scaleX?: number
    scaleY?: number
    shear?: number
    theta?: number
    origin?: CoordinateXY | string
    around?: CoordinateXY
    ox?: number
    originX?: number
    oy?: number
    originY?: number
    position?: CoordinateXY
    px?: number
    positionX?: number
    py?: number
    positionY?: number
    translate?: CoordinateXY
    tx?: number
    translateX?: number
    ty?: number
    translateY?: number
    relative?: CoordinateXY
    rx?: number
    relativeX?: number
    ry?: number
    relativeY?: number
  }

  type MatrixAlias =
    | MatrixLike
    | TransformData
    | MatrixTransformParam
    | number[]
    | Element
    | string

  class Matrix implements MatrixLike {
    constructor()
    constructor(source: MatrixAlias)
    constructor(
      a: number,
      b: number,
      c: number,
      d: number,
      e: number,
      f: number
    )

    a: number
    b: number
    c: number
    d: number
    e: number
    f: number;

    // *** To Be use by Test Only in restrict mode ***
    [key: string]: any

    clone(): Matrix
    transform(o: MatrixLike | MatrixTransformParam): Matrix
    compose(o: MatrixExtract): Matrix
    decompose(cx?: number, cy?: number): MatrixExtract
    multiply(m: MatrixAlias | Matrix): Matrix
    multiplyO(m: MatrixAlias | Matrix): this
    lmultiply(m: MatrixAlias | Matrix): Matrix
    lmultiplyO(m: MatrixAlias | Matrix): this
    inverse(): Matrix
    inverseO(): this
    translate(x?: number, y?: number): Matrix
    translateO(x?: number, y?: number): this
    scale(x: number, y?: number, cx?: number, cy?: number): Matrix
    scaleO(x: number, y?: number, cx?: number, cy?: number): this
    rotate(r: number, cx?: number, cy?: number): Matrix
    rotateO(r: number, cx?: number, cy?: number): this
    flip(a: NumberAlias, offset?: number): Matrix
    flipO(a: NumberAlias, offset?: number): this
    flip(offset?: number): Matrix
    shear(a: number, cx?: number, cy?: number): Matrix
    shearO(a: number, cx?: number, cy?: number): this
    skew(y?: number, cx?: number, cy?: number): Matrix
    skewO(y?: number, cx?: number, cy?: number): this
    skew(x: number, y?: number, cx?: number, cy?: number): Matrix
    skewX(x: number, cx?: number, cy?: number): Matrix
    skewY(y: number, cx?: number, cy?: number): Matrix
    around(cx?: number, cy?: number, matrix?: Matrix): Matrix
    aroundO(cx?: number, cy?: number, matrix?: Matrix): this
    equals(m: Matrix): boolean
    toString(): string
    toArray(): number[]
    valueOf(): MatrixLike
    to(a: any): Morphable
  }

  type ListEachCallback<T> = (el: T, index: number, list: List<T>) => any

  // List.js
  class List<T> extends BuiltInArray<T> {
    each(fn: ListEachCallback<T>): List<any>
    each(name: string, ...args: any[]): List<any>
    toArray(): T[]
  }

  class Eventobject {
    [key: string]: Eventobject
  }

  // EventTarget.js
  class EventTarget {
    events: Eventobject

    addEventListener(): void
    dispatch(event: Event | string, data?: object): Event
    dispatchEvent(event: Event): boolean
    fire(event: Event | string, data?: object): this
    getEventHolder(): this | Node
    getEventTarget(): this | Node

    on(
      events: string | Event[],
      cb: EventListener,
      binbind?: any,
      options?: AddEventListenerOptions
    ): this
    off(
      events?: string | Event[],
      cb?: EventListener | number,
      options?: AddEventListenerOptions
    ): this

    removeEventListener(): void
  }

  // Color.js
  interface ColorLike {
    r: number
    g: number
    b: number

    x: number
    y: number
    z: number

    h: number
    s: number
    l: number
    a: number
    c: number

    m: number
    k: number

    space: string
  }

  type ColorAlias = string | ColorLike

  class Color implements ColorLike {
    r: number
    g: number
    b: number

    x: number
    y: number
    z: number

    h: number
    s: number
    l: number
    a: number
    c: number

    m: number
    k: number

    space: string
    constructor()
    constructor(color: ColorAlias, space?: string)
    constructor(a: number, b: number, c: number, space?: string)
    constructor(a: number, b: number, c: number, d: number, space?: string)
    constructor(a: number[], space?: string)

    rgb(): Color
    lab(): Color
    xyz(): Color
    lch(): Color
    hsl(): Color
    cmyk(): Color
    toHex(): string
    toString(): string
    toRgb(): string
    toArray(): any[]

    to(a: any): Morphable
    fromArray(a: any): this

    static random(mode: 'sine', time?: number): Color
    static random(mode?: string): Color
  }

  // Box.js
  interface BoxLike {
    height: number
    width: number
    y: number
    x: number
    cx?: number
    cy?: number
    w?: number
    h?: number
    x2?: number
    y2?: number
  }

  class Box implements BoxLike {
    height: number
    width: number
    y: number
    x: number
    cx: number
    cy: number
    w: number
    h: number
    x2: number
    y2: number

    constructor()
    constructor(source: string)
    constructor(source: number[])
    constructor(source: DOMRect)
    constructor(x: number, y: number, width: number, height: number)

    merge(box: BoxLike): Box
    transform(m: Matrix): Box
    addOffset(): this
    toString(): string
    toArray(): number[]
    isNulled(): boolean
    to(v: MorphValueLike): Morphable
  }

  // Morphable.js
  type MorphValueLike =
    | string
    | number
    | objectBag
    | NonMorphable
    | MatrixExtract
    | Array<any>
    | any[]

  class Morphable {
    constructor()
    constructor(st: Stepper)

    from(): MorphValueLike
    from(v: MorphValueLike): this
    to(): MorphValueLike
    to(v: MorphValueLike): this
    type(): any
    type(t: any): this
    stepper(): Stepper
    stepper(st: Stepper): this
    done(): boolean
    at(pos: number): any
  }

  class objectBag {
    constructor()
    constructor(a: object)
    valueOf(): object
    toArray(): object[]

    to(a: object): Morphable
    fromArray(a: any[]): this
  }

  class NonMorphable {
    constructor(a: object)
    valueOf(): object
    toArray(): object[]

    to(a: object): Morphable
    fromArray(a: object): this
  }

  class TransformBag {
    constructor()
    constructor(a: number[])
    constructor(a: TransformData)
    defaults: TransformData
    toArray(): number[]
    to(t: TransformData): Morphable
    fromArray(t: number[]): this
  }

  interface Stepper {
    done(c?: object): boolean
  }

  class Ease implements Stepper {
    constructor()
    constructor(fn: string)
    constructor(fn: Function)

    step(from: number, to: number, pos: number): number
    done(): boolean
  }

  class Controller implements Stepper {
    constructor(fn?: Function)
    step(current: number, target: number, dt: number, c: number): number
    done(c?: object): boolean
  }

  // Queue.js
  interface QueueParam {
    value: any
    next?: any
    prev?: any
  }

  class Queue {
    constructor()

    push(value: any): QueueParam
    shift(): any
    first(): number
    last(): number
    remove(item: QueueParam): void
  }

  // Timeline.js
  interface ScheduledRunnerInfo {
    start: number
    duration: number
    end: number
    runner: Runner
  }

  class Timeline extends EventTarget {
    constructor()
    constructor(fn: Function)

    active(): boolean
    schedule(runner: Runner, delay?: number, when?: string): this
    schedule(): ScheduledRunnerInfo[]
    unschedule(runner: Runner): this
    getEndTime(): number
    updateTime(): this
    persist(dtOrForever?: number | boolean): this
    play(): this
    pause(): this
    stop(): this
    finish(): this
    speed(speed: number): this
    reverse(yes: boolean): this
    seek(dt: number): this
    time(): number
    time(time: number): this
    source(): Function
    source(fn: Function): this
  }

  // Runner.js
  interface TimesParam {
    duration: number
    delay: number
    when: number | string
    swing: boolean
    wait: number
    times: number
  }

  type TimeLike = number | TimesParam | Stepper

  type EasingCallback = (...any: any) => number
  type EasingLiteral = '<>' | '-' | '<' | '>'

  class Runner {
    constructor()
    constructor(options: Function)
    constructor(options: number)
    constructor(options: Controller)

    static sanitise: (
      duration?: TimeLike,
      delay?: number,
      when?: string
    ) => object

    element(): Element
    element(el: Element): this
    timeline(): Timeline
    timeline(timeline: Timeline): this
    animate(duration?: TimeLike, delay?: number, when?: string): this
    schedule(delay: number, when?: string): this
    schedule(timeline: Timeline, delay?: number, when?: string): this
    unschedule(): this
    loop(times?: number, swing?: boolean, wait?: number): this
    loop(times: TimesParam): this
    delay(delay: number): this

    during(fn: Function): this
    queue(
      initFn: Function,
      runFn: Function,
      retargetFn?: boolean | Function,
      isTransform?: boolean
    ): this
    after(fn: EventListener): this
    time(): number
    time(time: number): this
    duration(): number
    loops(): number
    loops(p: number): this
    persist(dtOrForever?: number | boolean): this
    position(): number
    position(p: number): this
    progress(): number
    progress(p: number): this
    step(deta?: number): this
    reset(): this
    finish(): this
    reverse(r?: boolean): this
    ease(fn: EasingCallback): this
    ease(kind: EasingLiteral): this
    active(): boolean
    active(a: boolean): this
    addTransform(m: Matrix): this
    clearTransform(): this
    clearTransformsFromQueue(): void

    // extends prototypes
    attr(a: string | object, v?: string): this
    css(s: string | object, v?: string): this
    styleAttr(type: string, name: string | object, val?: string): this
    zoom(level: NumberAlias, point?: Point): this
    transform(
      transforms: MatrixTransformParam,
      relative?: boolean,
      affine?: boolean
    ): this
    x(x: number): this
    y(y: number): this
    ax(x: number): this
    ay(y: number): this
    dx(dx: number): this
    dy(dy: number): this
    cx(x: number): this
    cy(y: number): this
    dmove(dx: number, dy: number): this
    move(x: number, y: number): this
    amove(x: number, y: number): this
    center(x: number, y: number): this
    size(width: number, height: number): this
    width(width: number): this
    height(height: number): this
    plot(a: object): this
    plot(a: number, b: number, c: number, d: number): this
    leading(value: number): this
    viewbox(x: number, y: number, width: number, height: number): this
    update(offset: number, color: number, opacity: number): this
    update(o: StopProperties): this
    rx(): number
    rx(rx: number): this
    ry(): number
    ry(ry: number): this
    from(x: NumberAlias, y: NumberAlias): this
    to(x: NumberAlias, y: NumberAlias): this

    fill(): string
    fill(fill: FillData): this
    fill(color: string): this
    fill(pattern: Element): this
    fill(image: Image): this
    stroke(): string
    stroke(stroke: StrokeData): this
    stroke(color: string): this
    matrix(): Matrix
    matrix(
      a: number,
      b: number,
      c: number,
      d: number,
      e: number,
      f: number
    ): this
    matrix(mat: MatrixAlias): this
    rotate(degrees: number, cx?: number, cy?: number): this
    skew(skewX?: number, skewY?: number, cx?: number, cy?: number): this
    scale(scaleX?: number, scaleY?: number, cx?: number, cy?: number): this
    translate(x: number, y: number): this
    shear(lam: number, cx: number, cy: number): this
    relative(x: number, y: number): this
    flip(direction?: string, around?: number): this
    flip(around: number): this
    opacity(): number
    opacity(value: number): this
    font(a: string): string
    font(a: string, v: string | number): this
    font(a: object): this
  }

  // Animator.js
  let Animator: {
    nextDraw: any
    frames: Queue
    timeouts: Queue
    immediates: Queue

    timer(): boolean
    frame(fn: Function): object
    timeout(fn: Function, delay?: number): object
    immediate(fn: Function): object
    cancelFrame(o: object): void
    clearTimeout(o: object): void
    cancelImmediate(o: object): void
  }

  /**
   * Just fancy type alias to refer to css query selector.
   */
  type QuerySelector = string

  class Dom extends EventTarget {
    node: HTMLElement | SVGElement
    type: string

    constructor(node?: HTMLElement, attr?: object)
    constructor(att: object)
    add(element: Element, i?: number): this
    addTo(parent: Dom | HTMLElement | string, i?: number): this
    children(): List<Element>
    clear(): this
    clone(deep?: boolean, assignNewIds?: boolean): this
    each(
      block: (index: number, children: Element[]) => void,
      deep?: boolean
    ): this
    element(element: string, inherit?: object): this
    first(): Element
    get(i: number): Element
    getEventHolder(): LinkedHTMLElement
    getEventTarget(): LinkedHTMLElement
    has(element: Element): boolean
    id(): string
    id(id: string): this
    index(element: Element): number
    last(): Element
    matches(selector: string): boolean
    /**
     * Finds the closest ancestor which matches the string or is of passed type. If nothing is passed, the parent is returned
     * @param type can be either string, svg.js object or undefined.
     */
    parent(type?: ElementTypeAlias | QuerySelector): Dom | null
    put(element: Element, i?: number): Element
    /**
     * Put the element into the given parent element and returns the parent element
     * @param parent The parent in which the current element is inserted
     */
    putIn(parent: ElementAlias | Node | QuerySelector): Dom

    remove(): this
    removeElement(element: Element): this
    replace<T extends Dom>(element: T): T
    round(precision?: number, map?: string[]): this
    svg(): string
    svg(a: string, outer: true): Element
    svg(a: string, outer?: false): this
    svg(a: boolean, outer?: boolean): string
    svg(a: null | Function, outer?: boolean): string

    toString(): string
    words(text: string): this
    writeDataToDom(): this

    // prototype extend Attribute in attr.js
    /**
     * Get the attribute object of SVG Element. The return object will be vary based on
     * the instance itself. For example, G element will only return GlobalAttr where Rect
     * will return RectAttr instead.
     */
    attr(): any
    /**
     * Add or update the attribute from the SVG Element. To remove the attribute from the element set value to null
     * @param name name of attribute
     * @param value value of attribute can be string or number or null
     * @param namespace optional string that define namespace
     */
    attr(name: string, value: any, namespace?: string): this
    attr(name: string): any
    attr(obj: object): this
    attr(obj: string[]): object

    // prototype extend Selector in selector.js
    find(query: string): List<Element>
    findOne(query: string): Dom | null

    // prototype method register in data.js
    data(a: string): object | string | number
    data(a: string, v: object, substain?: boolean): this
    data(a: object): this

    // prototype method register in arrange.js
    siblings(): List<Element>
    position(): number
    next(): Element
    prev(): Element
    forward(): this
    backward(): this
    front(): this
    back(): this
    before(el: Element): Element
    after(el: Element): Element
    insertBefore(el: Element): this
    insertAfter(el: Element): this

    // prototype method register in class.js
    classes(): string[]
    hasClass(name: string): boolean
    addClass(name: string): this
    removeClass(name: string): this
    toggleClass(name: string): this

    // prototype method register in css.js
    css(): Partial<CSSStyleDeclarationWithVars>
    css<T extends CSSStyleName>(style: T): CSSStyleDeclarationWithVars[T]
    css<T extends CSSStyleName[]>(
      style: T
    ): Partial<CSSStyleDeclarationWithVars>
    css<T extends CSSStyleName>(
      style: T,
      val: CSSStyleDeclarationWithVars[T]
    ): this
    css(style: Partial<CSSStyleDeclarationWithVars>): this
    show(): this
    hide(): this
    visible(): boolean

    // memory.js
    remember(name: string, value: any): this
    remember(name: string): any
    remember(obj: object): this
    forget(...keys: string[]): this
    forget(): this
    memory(): object

    addEventListener(): void
    dispatch(event: Event | string, data?: object): Event
    dispatchEvent(event: Event): boolean
    fire(event: Event | string, data?: object): this
    getEventHolder(): this | Node
    getEventTarget(): this | Node

    // on(events: string | Event[], cb: EventListener, binbind?: any, options?: AddEventListenerOptions): this;
    // off(events?: string | Event[], cb?: EventListener | number): this;
    removeEventListener(): void
  }

  // clip.js
  class ClipPath extends Container {
    constructor()
    constructor(node?: SVGClipPathElement)
    constructor(attr: object)
    node: SVGClipPathElement

    targets(): List<Element>
    remove(): this
  }

  // container.js
  interface ViewBoxLike {
    x: number
    y: number
    width: number
    height: number
  }

  class Containable {
    circle(size?: NumberAlias): Circle
    clip(): ClipPath
    ellipse(width?: number, height?: number): Ellipse
    foreignObject(width: number, height: number): ForeignObject
    gradient(type: string, block?: (stop: Gradient) => void): Gradient
    group(): G

    image(): Image
    image(href?: string, callback?: (e: Event) => void): Image
    line(points?: PointArrayAlias): Line
    line(x1: number, y1: number, x2: number, y2: number): Line
    link(url: string): A
    marker(
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): Marker
    mask(): Mask
    nested(): Svg
    path(): Path
    path(d: PathArrayAlias): Path
    pattern(
      width?: number,
      height?: number,
      block?: (pattern: Pattern) => void
    ): Pattern
    plain(text: string): Text
    polygon(points?: PointArrayAlias): Polygon
    polyline(points?: PointArrayAlias): Polyline
    rect(width?: NumberAlias, height?: NumberAlias): Rect
    style(): Style
    text(block: (tspan: Tspan) => void): Text
    text(text: string): Text
    use(element: Element | string, file?: string): Use
    viewbox(): Box
    viewbox(viewbox: ViewBoxLike | string): this
    viewbox(x: number, y: number, width: number, height: number): this
    textPath(text: string | Text, path: string | Path): TextPath
    symbol(): Symbol
    zoom(): number
    zoom(level: NumberAlias, point?: Point): this
  }

  type DynamicExtends<T extends {}> = {
    new (...args: any[]): Containable & T
  }

  /**
   * only for declaration purpose. actually cannot be used.
   */
  let ContainableDom: DynamicExtends<Dom>
  class Fragment extends ContainableDom {
    constructor(node?: Node)
  }

  /**
   * only for declaration purpose. actually cannot be used.
   */
  let ContainableElement: DynamicExtends<Element>
  class Container extends ContainableElement {
    constructor()
    flatten(parent: Dom, depth?: number): this
    ungroup(parent: Dom, depth?: number): this
  }

  class Defs extends Container {
    constructor(node?: SVGDefsElement)
    node: SVGDefsElement
    marker(
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): Marker
  }

  class Svg extends Container {
    constructor(svgElement?: SVGSVGElement)
    constructor(id: string)
    node: SVGSVGElement
    namespace(): this
    defs(): Defs
    remove(): this
    isRoot(): boolean
  }

  type EventHandler<T extends Event> = (event: T) => void

  interface Sugar {
    fill(): string
    fill(fill: FillData): this
    fill(color: string): this
    fill(pattern: Element): this
    fill(image: Image): this
    stroke(): string
    stroke(stroke: StrokeData): this
    stroke(color: string): this
    matrix(): Matrix
    matrix(
      a: number,
      b: number,
      c: number,
      d: number,
      e: number,
      f: number
    ): this
    matrix(mat: MatrixAlias): this
    rotate(degrees: number, cx?: number, cy?: number): this
    skew(skewX?: number, skewY?: number, cx?: number, cy?: number): this
    scale(scaleX?: number, scaleY?: number, cx?: number, cy?: number): this
    translate(x: number, y: number): this
    shear(lam: number, cx: number, cy: number): this
    relative(x: number, y: number): this
    flip(direction?: string, around?: number): this
    flip(around: number): this
    opacity(): number
    opacity(value: number): this
    font(a: string): string
    font(a: string, v: string | number): this
    font(a: object): this

    click(cb: EventHandler<MouseEvent>): this
    dblclick(cb: EventHandler<MouseEvent>): this
    mousedown(cb: EventHandler<MouseEvent>): this
    mouseup(cb: EventHandler<MouseEvent>): this
    mouseover(cb: EventHandler<MouseEvent>): this
    mouseout(cb: EventHandler<MouseEvent>): this
    mousemove(cb: EventHandler<MouseEvent>): this
    mouseenter(cb: EventHandler<MouseEvent>): this
    mouseleave(cb: EventHandler<MouseEvent>): this
    touchstart(cb: EventHandler<TouchEvent>): this
    touchmove(cb: EventHandler<TouchEvent>): this
    touchleave(cb: EventHandler<TouchEvent>): this
    touchend(cb: EventHandler<TouchEvent>): this
    touchcancel(cb: EventHandler<TouchEvent>): this
    contextmenu(cb: EventHandler<MouseEvent>): this
    wheel(cb: EventHandler<WheelEvent>): this
    pointerdown(cb: EventHandler<PointerEvent>): this
    pointermove(cb: EventHandler<PointerEvent>): this
    pointerup(cb: EventHandler<PointerEvent>): this
    pointerleave(cb: EventHandler<PointerEvent>): this
    pointercancel(cb: EventHandler<PointerEvent>): this
  }

  // Symbol.js
  class Symbol extends Container {
    constructor(svgElement?: SVGSymbolElement)
    constructor(attr: object)
    node: SVGSymbolElement
  }

  class Element extends Dom implements Sugar {
    constructor(node?: SVGElement)
    constructor(attr: object)
    node: SVGElement
    type: string
    dom: any

    addClass(name: string): this
    after(element: Element): Element
    animate(duration?: TimeLike, delay?: number, when?: string): Runner
    delay(by: number, when?: string): Runner
    attr(): any
    attr(name: string, value: any, namespace?: string): this
    attr(name: string): any
    attr(obj: string[]): object
    attr(obj: object): this
    back(): this
    backward(): this
    bbox(): Box
    before(element: Element): Element
    center(x: number, y: number): this
    classes(): string[]
    clipper(): ClipPath
    clipWith(element: Element): this
    clone(deep?: boolean, assignNewIds?: boolean): this
    ctm(): Matrix
    cx(): number
    cx(x: number): this
    cy(): number
    cy(y: number): this
    data(name: string, value: any, sustain?: boolean): this
    data(name: string): any
    data(val: object): this
    defs(): Defs
    dmove(x: NumberAlias, y: NumberAlias): this
    dx(x: NumberAlias): this
    dy(y: NumberAlias): this
    event(): Event | CustomEvent

    fire(event: Event): this
    fire(event: string, data?: any): this
    forget(...keys: string[]): this
    forget(): this
    forward(): this
    front(): this
    hasClass(name: string): boolean
    height(): NumberAlias
    height(height: NumberAlias): this
    hide(): this
    hide(): this
    id(): string
    id(id: string): this
    inside(x: number, y: number): boolean
    is(cls: any): boolean
    linkTo(url: (link: A) => void): A
    linkTo(url: string): A
    masker(): Mask
    maskWith(element: Element): this
    maskWith(mask: Mask): this
    matches(selector: string): boolean
    matrixify(): Matrix
    memory(): object
    move(x: NumberAlias, y: NumberAlias): this
    native(): LinkedHTMLElement
    next(): Element
    // off(events?: string | Event[], cb?: EventListener | number): this;
    // on(event: string, cb: Function, context?: object): this;
    toRoot(): Svg
    /**
     * By default parents will return a list of elements up until the root svg.
     */
    parents(): List<Element>
    /**
     * List the parent by hierarchy until the given parent type or matcher. If the given value is null
     * then the result is only provided the list up until Svg root element which mean no Dom parent element is included.
     * @param util a parent type
     */
    parents<T extends Dom>(util: QuerySelector | T | null): List<Element>
    /**
     * Get reference svg element based on the given attribute.
     * @param attr a svg attribute
     */
    reference<R extends Dom>(attr: AttributeReference): R | null

    point(): Point
    point(position: CoordinateXY): Point
    point(point: Point): Point
    point(x: number, y: number): Point
    position(): number
    prev(): Element
    rbox(element?: Element): Box
    reference(type: string): Element
    remember(name: string, value: any): this
    remember(name: string): any
    remember(obj: object): this
    remove(): this
    removeClass(name: string): this
    root(): Svg
    screenCTM(): Matrix
    setData(data: object): this
    show(): this
    show(): this
    size(width?: NumberAlias, height?: NumberAlias): this
    stop(jumpToEnd: boolean, clearQueue: boolean): Animation
    stop(
      offset?: NumberAlias | string,
      color?: NumberAlias,
      opacity?: NumberAlias
    ): Stop
    stop(val: {
      offset?: NumberAlias | string
      color?: NumberAlias
      opacity?: NumberAlias
    }): Stop
    timeline(): Timeline
    timeline(tl: Timeline): this
    toggleClass(name: string): this
    toParent(parent: Dom): this
    toParent(parent: Dom, i: number): this
    toSvg(): this
    transform(): MatrixExtract
    transform(t: MatrixAlias, relative?: boolean): this
    unclip(): this
    unmask(): this
    untransform(): this
    visible(): boolean
    width(): NumberAlias
    width(width: NumberAlias): this
    x(): NumberAlias
    x(x: NumberAlias): this
    y(): NumberAlias
    y(y: NumberAlias): this

    fill(): string
    fill(fill: FillData): this
    fill(color: string): this
    fill(pattern: Element): this
    fill(image: Image): this
    stroke(): string
    stroke(stroke: StrokeData): this
    stroke(color: string): this
    matrix(): Matrix
    matrix(
      a: number,
      b: number,
      c: number,
      d: number,
      e: number,
      f: number
    ): this
    matrix(mat: MatrixAlias): this
    rotate(degrees: number, cx?: number, cy?: number): this
    skew(skewX?: number, skewY?: number, cx?: number, cy?: number): this
    scale(scaleX?: number, scaleY?: number, cx?: number, cy?: number): this
    translate(x: number, y: number): this
    shear(lam: number, cx: number, cy: number): this
    relative(x: number, y: number): this
    flip(direction?: string, around?: number): this
    flip(around: number): this
    opacity(): number
    opacity(value: number): this
    font(a: string): string
    font(a: string, v: string | number): this
    font(a: object): this

    click(cb: EventHandler<MouseEvent>): this
    dblclick(cb: EventHandler<MouseEvent>): this
    mousedown(cb: EventHandler<MouseEvent>): this
    mouseup(cb: EventHandler<MouseEvent>): this
    mouseover(cb: EventHandler<MouseEvent>): this
    mouseout(cb: EventHandler<MouseEvent>): this
    mousemove(cb: EventHandler<MouseEvent>): this
    mouseenter(cb: EventHandler<MouseEvent>): this
    mouseleave(cb: EventHandler<MouseEvent>): this
    touchstart(cb: EventHandler<TouchEvent>): this
    touchmove(cb: EventHandler<TouchEvent>): this
    touchleave(cb: EventHandler<TouchEvent>): this
    touchend(cb: EventHandler<TouchEvent>): this
    touchcancel(cb: EventHandler<TouchEvent>): this
    contextmenu(cb: EventHandler<MouseEvent>): this
    wheel(cb: EventHandler<WheelEvent>): this
    pointerdown(cb: EventHandler<PointerEvent>): this
    pointermove(cb: EventHandler<PointerEvent>): this
    pointerup(cb: EventHandler<PointerEvent>): this
    pointerleave(cb: EventHandler<PointerEvent>): this
    pointercancel(cb: EventHandler<PointerEvent>): this
  }

  // ellipse.js
  interface CircleMethods extends Shape {
    rx(rx: number): this
    rx(): this
    ry(ry: number): this
    ry(): this
    radius(x: number, y?: number): this
  }
  class Circle extends Shape implements CircleMethods {
    constructor(node?: SVGCircleElement)
    constructor(attr: CircleAttr)

    node: SVGCircleElement

    rx(rx: number): this
    rx(): this
    ry(ry: number): this
    ry(): this
    radius(x: number, y?: number): this
  }
  class Ellipse extends Shape implements CircleMethods {
    node: SVGEllipseElement
    constructor(attr: EllipseAttr)
    constructor(node?: SVGEllipseElement)

    rx(rx: number): this
    rx(): this
    ry(ry: number): this
    ry(): this
    radius(x: number, y?: number): this
  }

  interface StopProperties {
    color?: ColorAlias
    offset?: number | string
    opacity?: number
  }

  // gradient.js
  class Stop extends Element {
    update(offset?: number, color?: ColorAlias, opacity?: number): this
    update(opts: StopProperties): this
  }
  class Gradient extends Container {
    constructor(node?: SVGGradientElement)
    constructor(attr: object)
    constructor(type: string)
    node: SVGGradientElement

    at(offset?: number, color?: ColorAlias, opacity?: number): Stop
    at(opts: StopProperties): Stop
    url(): string
    toString(): string
    targets(): List<Element>
    bbox(): Box

    // gradiented.js
    from(x: number, y: number): this
    to(x: number, y: number): this

    // TODO: check with main.js
    radius(x: number, y?: number): this
    targets(): List<Element>
    bbox(): Box
    update(block?: (gradient: Gradient) => void): this
  }

  // group.js
  class G extends Container {
    constructor(node?: SVGGElement)
    constructor(attr: object)
    node: SVGGElement
    gbox(): Box
  }

  // hyperlink.js
  class A extends Container {
    constructor(node?: SVGAElement)
    constructor(attr: object)
    node: SVGAElement
    to(url: string): this
    to(): string
    target(target: string): this
    target(): string
  }

  // ForeignObject.js
  class ForeignObject extends Element {
    constructor(node?: SVGForeignObjectElement, attrs?: object)
    constructor(attrs?: object)
    add(element: Dom, i?: number): this
  }

  // image.js
  class Image extends Shape {
    constructor(node?: SVGImageElement)
    constructor(attr: object)
    node: SVGImageElement
    load(url?: string, callback?: (event: Event) => void): this
  }

  // line.js
  type PointArrayAlias = number[] | ArrayXY[] | PointArray | string

  class Line extends Shape {
    constructor(attr: LineAttr)
    constructor(node?: SVGLineElement)

    node: SVGLineElement

    array(): PointArray
    plot(): PointArray
    plot(points?: PointArrayAlias): this
    plot(x1: number, y1: number, x2: number, y2: number): this
    move(x: number, y: number): this
    size(width?: number, height?: number): this
    marker(
      position: string,
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): Marker
    marker(position: string, marker: Marker): Marker
  }

  // marker.js
  // TODO: check register method marker
  class Marker extends Container {
    constructor()

    node: SVGMarkerElement

    ref(x: string | number, y: string | number): this
    update(block: (marker: Marker) => void): this
    toString(): string
    orient(orientation: 'auto' | 'auto-start-reverse' | number | Number): this
    orient(): string
  }
  // mask.js
  class Mask extends Container {
    constructor(node?: SVGMaskElement)
    constructor(attr: object)
    node: SVGMaskElement
    remove(): this
    targets(): List<Element>
  }

  // path.js
  class Path extends Shape {
    constructor(attr: PathAttr)
    constructor(node?: SVGPathElement)

    node: SVGPathElement

    morphArray: PathArray
    array(): PathArray
    plot(): PathArray
    plot(d: PathArrayAlias): this
    marker(
      position: string,
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): this
    marker(position: string, marker: Marker): this

    // sugar.js
    length(): number
    pointAt(length: number): { x: number; y: number }
    text(text: string): TextPath
    text(text: Text): TextPath
    targets(): List<Element>
  }

  // pattern.js
  class Pattern extends Container {
    url(): string
    url(...rest: any[]): never
    update(block: (pattern: Pattern) => void): this
    toString(): string
  }

  // poly.js
  interface poly {
    array(): PointArray
    plot(): PointArray
    plot(p: PointArrayAlias): this
    clear(): this
    move(x: number, y: number): this
    size(width: number, height?: number): this
  }

  // pointed.js
  interface pointed {
    x(): number
    x(x: number): this
    y(): number
    y(y: number): this
    height(): number
    height(h: number): this
    width(): number
    width(w: number): this
  }

  class Polyline extends Shape implements poly, pointed {
    constructor(node?: SVGPolylineElement)
    constructor(attr: PolyAttr)

    node: SVGPolylineElement

    array(): PointArray
    plot(): PointArray
    plot(p: PointArrayAlias): this
    x(): number
    x(x: number): this
    y(): number
    y(y: number): this
    height(): number
    height(h: number): this
    width(): number
    width(w: number): this
    move(x: number, y: number): this
    size(width: number, height?: number): this
    marker(
      position: string,
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): Marker
    marker(position: string, marker: Marker): Marker
  }

  class Polygon extends Shape implements poly, pointed {
    constructor(node?: SVGPolygonElement)
    constructor(attr: PolyAttr)

    node: SVGPolygonElement
    array(): PointArray
    plot(): PointArray
    plot(p: PointArrayAlias): this
    x(): number
    x(x: number): this
    y(): number
    y(y: number): this
    height(): number
    height(h: number): this
    width(): number
    width(w: number): this
    move(x: number, y: number): this
    size(width: number, height?: number): this
    marker(
      position: string,
      width?: number,
      height?: number,
      block?: (marker: Marker) => void
    ): Marker
    marker(position: string, marker: Marker): Marker
  }

  class Rect extends Shape {
    constructor(node?: SVGRectElement)
    constructor(attr: RectAttr)
    node: SVGRectElement
    radius(x: number, y?: number): this
  }

  // shape.js
  class Shape extends Element {}

  // sugar.js
  interface StrokeData {
    color?: string
    width?: number
    opacity?: number
    linecap?: string
    linejoin?: string
    miterlimit?: number
    dasharray?: string
    dashoffset?: number
  }

  interface FillData {
    color?: string
    opacity?: number
    rule?: string
  }

  interface FontData {
    family?: string
    size?: NumberAlias
    anchor?: string
    leading?: NumberAlias
    weight?: string
    style?: string
  }
  // textable.js
  interface Textable {
    plain(text: string): this
    length(): number
  }

  // text.js
  class Text extends Shape implements Textable {
    constructor(node?: SVGElement)
    constructor(attr: TextAttr)

    clone(): this
    text(): string
    text(text: string): this
    text(block: (text: this) => void): this
    leading(): Number
    leading(leading: NumberAlias): this
    rebuild(enabled: boolean): this
    build(enabled: boolean): this
    clear(): this
    plain(text: string): this
    length(): number
    get(i: number): Tspan
    path(): TextPath
    path(d: PathArrayAlias | Path): TextPath
    track(): Element
    ax(): string
    ax(x: string): this
    ay(): string
    ay(y: string): this
    amove(x: number, y: number): this
    textPath(): TextPath

    // main.js, from extend/copy prototypes from Tspan
    tspan(text: string): Tspan
    tspan(block: (tspan: Tspan) => void): this
  }

  class Tspan extends Text implements Textable {
    constructor(node?: SVGElement)
    constructor(attr: TextAttr)
    dx(): number
    dx(x: NumberAlias): this
    dy(): number
    dy(y: NumberAlias): this
    newLine(): this
    tspan(text: string): Tspan
    tspan(block: (tspan: Tspan) => void): this
    length(): number
    text(): string
    text(text: string): this
    text(block: (text: this) => void): this
    plain(text: string): this
  }

  // textpath.js
  class TextPath extends Text {
    constructor()
    constructor(attr: TextPathAttr)

    array(): Array<any>
    plot(): PathArray
    plot(d: string): this
    track(): Path
  }

  // style.js
  class Style extends Element {
    constructor(node: SVGElement, attr?: StylingAttr)
    addText(text: string): this
    font(a: object): this
    font(a: string, v: string | number): this
    font(a: string): string
    rule(selector: string, obj: any): this
  }

  // use.js
  class Use extends Shape {
    use(element: string, file?: string): this
  }

  // viewbox.js
  type ViewBoxAlias = ViewBoxLike | number[] | string | Element

  interface ViewBox {
    x: number
    y: number
    width: number
    height: number
    toString(): string
    at(pos: number): ViewBox
  }
}