我做了一个虚拟对象，id是重复的，请检查我是否找到了如何用新的语法做这个，但找不到任何东西。有人能帮忙吗？

/**
 * Import only the mongoose in this class
 * This plugin is for MongoDB and this class decide how the Mongo document should be for the Tour objects
 */
import mongoose from 'mongoose';
import slugify from 'slugify';
/**
 * Config the Tour object what name and the type of attributes
 */
const tourSchema = new mongoose.Schema([
  {
    name: {
      type: String,
      required: [true, 'A tour must have a name'],
      unique: true,
      trim: true,
    },
    slug: String,
    duration: {
      type: Number,
      required: [true, 'A tour must have a duration'],
    },
    maxGroupSize: {
      type: Number,
      required: [true, 'A tour must have a max group size'],
    },
    difficulty: {
      type: String,
      required: [true, 'A tour must have a difficulty'],
    },
    ratingsAverage: {
      type: Number,
      default: 4.5,
    },

    ratingsQuantity: {
      type: Number,
      default: 0,
    },

    price: {
      type: Number,
      required: [true, 'A tour must have a price'],
    },

    priceDiscount: Number,

    summary: {
      type: String,
      trim: true,
      required: [true, 'A tour must have a summary'],
    },
    description: {
      type: String,
      trim: true,
    },
    imageCover: {
      type: String,
      trim: true,
      required: [true, 'A tour must have an cover image'],
    },
    images: [String],

    createAt: {
      type: Date,
      default: Date.now,
      select: false,
    },
    startDates: [Date],
  },
]);
tourSchema.set('toJSON', { getters: true, virtuals: true});
tourSchema.set('toObject', { getters: true, virtuals: true });

tourSchema.virtual('durationWeeks').get(function () {
  return this.duration / 7;
});

// tourSchema.pre('save', function (next) {
//   this.slug = slugify(this.name, { lower: true });
//   next();
// });

// tourSchema.post('save', function(doc,next){
//   console.log(doc);
//   next();
// });

/**
 * Create a mogoose module this puts in the name and type of attributes Tour object should have and what must be writend and what is optional
 */
const Tour = mongoose.model('Tours', tourSchema);
/**
 * Export the Tour constant
 */
export default Tour;

The Object from MongoDB
我看过moongos的文档，并试图找到如何删除重复的，我看过旧的代码，但不工作的“ Mongoose ”：“^6.8.0”。如果有人知道如何删除第二个ID，我将不胜感激。谢谢