Use window.phet && window.phet.joist && window.phet.joist.elapsedTime in common libs, see https://github.com/phetsims/phet-io/issues/579
Use window.phet && window.phet.joist && window.phet.joist.elapsedTime in common libs, see https://github.com/phetsims/phet-io/issues/579

phetsims/sun,phetsims/sun,phetsims/sun