1. DomName('Range.compareBoundaryPoints')
  2. DocsEditable()
  3. Experimental()
int compareBoundaryPoints(int how, Range sourceRange)

Source 

@DomName('Range.compareBoundaryPoints')
@DocsEditable()
@Experimental() // untriaged
int compareBoundaryPoints(int how, Range sourceRange) => _blink.BlinkRange.instance.compareBoundaryPoints_Callback_2_(unwrap_jso(this), how, unwrap_jso(sourceRange));