superset-frontend/src/components/CachedLabel/TooltipContent.tsx

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import React from 'react';
import moment from 'moment';
import { t } from '@superset-ui/core';

interface Props {
  cachedTimestamp?: string;
}
export const TooltipContent: React.FC<Props> = ({ cachedTimestamp }) => {
  const cachedText = cachedTimestamp ? (
    <span>
      {t('Loaded data cached')}
      <b> {moment.utc(cachedTimestamp).fromNow()}</b>
    </span>
  ) : (
    t('Loaded from cache')
  );

  return (
    <span data-test="tooltip-content">
      {cachedText}. {t('Click to force-refresh')}
    </span>
  );
};