message: propTypes, not PropTypes. Fix linter error (trailing whitespace).
diff: @@ -106,7 +106,7 @@ export class BaseGraph extends SafetyFirst {
  }
  }
  -BaseGraph.PropTypes = {
  +BaseGraph.propTypes = {
  query: PropTypes.string.isRequired,
  title: PropTypes.string.isRequired,
  timeSpan: PropTypes.number,
  