taye/interact.js

const domObjects: {
  init: any
  document: Document
  DocumentFragment: typeof DocumentFragment
  SVGElement: typeof SVGElement
  SVGSVGElement: typeof SVGSVGElement
  SVGElementInstance: any
  Element: typeof Element
  HTMLElement: typeof HTMLElement
  Event: typeof Event
  Touch: typeof Touch
  PointerEvent: typeof PointerEvent
} = {
  init,
  document: null,
  DocumentFragment: null,
  SVGElement: null,
  SVGSVGElement: null,
  SVGElementInstance: null,
  Element: null,
  HTMLElement: null,
  Event: null,
  Touch: null,
  PointerEvent: null,
}

function blank() {}

export default domObjects

function init(window: Window) {
  const win = window as any

  domObjects.document = win.document
  domObjects.DocumentFragment = win.DocumentFragment || blank
  domObjects.SVGElement = win.SVGElement || blank
  domObjects.SVGSVGElement = win.SVGSVGElement || blank
  domObjects.SVGElementInstance = win.SVGElementInstance || blank
  domObjects.Element = win.Element || blank
  domObjects.HTMLElement = win.HTMLElement || domObjects.Element

  domObjects.Event = win.Event
  domObjects.Touch = win.Touch || blank
  domObjects.PointerEvent = win.PointerEvent || win.MSPointerEvent
}