message: Fix empty interface
diff: @@ -9,12 +9,10 @@ import {SyncTeXRecordForward} from './locator'
  import {ExternalCommand} from '../utils'
  import {encodePathWithPrefix} from './encodePath'
  -interface Position {}
  -
  interface Client {
  viewer: 'browser' | 'tab'
  websocket: ws
  - position?: Position
  + position?: {}
  }
  export class Viewer {
  