修复函数中的 no-param-reassign Eslint 问题

Question

使用下面的代码，我在// eslint-disable-next-line no-param-reassign 禁用该行的许多地方收到 ESlint 错误Assignment to property of function parameter 'recurrence'。我不想使用禁用。如何在不使用 disable 作为合法方式的情况下解决这个问题？谁能帮我这个？谢谢

   onUpdateRecurrence = (recurrence) => {
    const todayDay = moment().format('D');
    const currentMonth = moment().format('M');
    if (recurrence.frequency === 'MONTHLY') {
      if (recurrence.days) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.days;
      }
      if (recurrence.day_of_month) {
        // eslint-disable-next-line no-param-reassign
        recurrence.day_of_month = recurrence.day_of_month;
      } else {
        // eslint-disable-next-line no-param-reassign
        recurrence.day_of_month = `${todayDay}${this.getDaySuffix(todayDay)}`;
      }
      if (recurrence.month) {
        // eslint-disable-next-line no-param-reassign
        recurrence.month = recurrence.month;
      } else {
        // eslint-disable-next-line no-param-reassign
        recurrence.month = currentMonth;
      }
    }
    if (recurrence.frequency === 'WEEKLY') {
      if (recurrence.day_of_month) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.day_of_month;
      }
      if (recurrence.month) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.month;
      }
    }
    if (recurrence.frequency === 'DAILY') {
      if (recurrence.day_of_month) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.day_of_month;
      }
      if (recurrence.month) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.month;
      }
      if (recurrence.days) {
        // eslint-disable-next-line no-param-reassign
        delete recurrence.days;
      }
    }
    return recurrence;
  };

Answer 1

您可以将循环分配给函数内部的const 变量，并在函数内部使用它。

 onUpdateRecurrence = (recurrence) => {
    const recurrenceValue = {...recurrence};

   //Your Code
 }