message: fix type errors in create.ts
diff: @@ -88,6 +88,7 @@ export function newThingUI (
  _context => {
  const newPaneOptions: NewPaneOptions = Object.assign({
  newBase: newBase,
  + folder: options.folder || undefined,
  workspace: ws
  }, options)
  for (const opt in options) {
  @@ -209,7 +210,7 @@ export function newThingUI (
  const mintingPanes = Object.values(thePanes).filter(pane => pane.mintNew)
  const mintingClassMap = mintingPanes.reduce((classMap, pane) => {
  if (pane.mintClass) {
  - classMap[pane.mintClass] = (classMap[pane.mintClass] || 0) + 1
  + classMap[pane.mintClass.uri] = (classMap[pane.mintClass.uri] || 0) + 1
  }
  return classMap
  }, {})
  @@ -218,7 +219,7 @@ export function newThingUI (
  const icon: any = createContext.div.appendChild(dom.createElement('img'))
  icon.setAttribute('src', pane.icon)
  const noun = pane.mintClass
  - ? mintingClassMap[pane.mintClass] > 1
  + ? mintingClassMap[pane.mintClass.uri] > 1
  ? `${utils.label(pane.mintClass)} (using ${pane.name} pane)`
  : utils.label(pane.mintClass)
  : pane.name + ' @@'
  