superset-frontend/plugins/plugin-chart-table/src/utils/DateWithFormatter.ts

/**
 * 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 {
  DataRecordValue,
  normalizeTimestamp,
  TimeFormatFunction,
} from '@superset-ui/core';

/**
 * Extended Date object with a custom formatter, and retains the original input
 * when the formatter is simple `String(..)`.
 */
export default class DateWithFormatter extends Date {
  formatter: TimeFormatFunction;

  input: DataRecordValue;

  constructor(
    input: DataRecordValue,
    { formatter = String }: { formatter?: TimeFormatFunction } = {},
  ) {
    let value = input;
    // assuming timestamps without a timezone is in UTC time
    if (typeof value === 'string') {
      value = normalizeTimestamp(value);
    }

    super(value as string);

    this.input = input;
    this.formatter = formatter;
    this.toString = (): string => {
      if (this.formatter === String) {
        return String(this.input);
      }
      return this.formatter ? this.formatter(this) : Date.toString.call(this);
    };
  }
}