ivue-material-plus/src/utils/create-native-locale-formatter.ts

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import Pad from './pad';

export default (
  locale: string,
  options: any,
  { start, length } = { start: 0, length: 0 }
) => {
  // 适配IOS
  const makeIsoString = (dateString: string) => {
    const [year, month, date] = dateString.trim().split(' ')[0].split('-');

    return [year, Pad(month || 1), Pad(date || 1)].join('-');
  };

  try {
    // 初始化 根据语言来格式化日期和时间的对象
    const intlFormatter = new Intl.DateTimeFormat(locale || undefined, options);

    return (dateString: string) => {
      return intlFormatter.format(
        new Date(`${makeIsoString(dateString)}T00:00:00+00:00`)
      );
    };
  } catch (e) {
    return start || length
      ? (dateString: string) => makeIsoString(dateString).substr(start, length)
      : null;
  }
};