michael-s-molina commented on a change in pull request #13409:
URL: https://github.com/apache/superset/pull/13409#discussion_r587351527



##########
File path: superset-frontend/src/components/RefreshLabel/index.tsx
##########
@@ -16,32 +16,38 @@
  * specific language governing permissions and limitations
  * under the License.
  */
-import React from 'react';
-import PropTypes from 'prop-types';
+import React, { MouseEventHandler } from 'react';
+import { useTheme } from '@superset-ui/core';
 import { Tooltip } from 'src/common/components/Tooltip';
+import Icon, { IconProps } from 'src/components/Icon';
 
-import './RefreshLabel.less';
+export interface RefreshLabelProps {
+  onClick: MouseEventHandler<SVGSVGElement>;
+  tooltipContent: string;
+}
 
-const propTypes = {
-  onClick: PropTypes.func,
-  tooltipContent: PropTypes.string.isRequired,
-};
+const RefreshLabel = ({ onClick, tooltipContent }: RefreshLabelProps) => {
+  const theme = useTheme();
 
-class RefreshLabel extends React.PureComponent {
-  render() {
-    return (
-      <Tooltip title={this.props.tooltipContent} id="cache-desc-tooltip">
-        <i
-          aria-label="Icon"
-          role="button"
-          tabIndex={0}
-          className="RefreshLabel fa fa-refresh pointer"
-          onClick={this.props.onClick}
-        />
-      </Tooltip>
-    );
-  }
-}
-RefreshLabel.propTypes = propTypes;
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  const IconWithoutRef = React.forwardRef((props: IconProps, ref: any) => (
+    <Icon {...props} />
+  ));
+
+  return (
+    <Tooltip title={tooltipContent}>
+      <IconWithoutRef
+        role="button"
+        onClick={onClick}
+        name="refresh"
+        css={{

Review comment:
       We don't need to import [`css`](https://emotion.sh/docs/css-prop) when 
using object styles, only when we use string styles. Babel will automatically 
convert this property to a `className`.
   
   I'll disagree with you about string style vs object style. What really makes 
the difference for me when I chose object style is typescript checking and 
autocompletion. You can't do that when using string styles and that is more 
error-prone. Also, for me at least, is more natural coming from React and React 
Native style pattern.




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