const mongoose = require("mongoose");
const { Schema } = mongoose;
const crypto = require("crypto");

const userSchema = new Schema(
  {
    username: {
      type: String,
      trim: true,
      required: true,
      unique: true,
      index: true,
      lowercase: true,
    },
    name: {
      type: String,
      trim: true,
      required: true,
    },
    email: {
      type: String,
      trim: true,
      required: true,
      unique: true,
      lowercase: true,
    },
    hashed_password: {
      type: String,
      required: true,
    },
    salt: String,
    role: {
      type: String,
      default: "user",
    },
    resetPasswordLink: {
      data: String,
      default: "",
    },
  },
  { timestamps: true }
);

// virtual fields
userSchema
  .virtual("password")
  .set(function (password) {
    // create temp variable called _password
    this._password = password;
    // generate salt
    this.salt = this.makeSalt();
    // encrypt password
    this.hashed_password = this.encryptPassword(password);
  })
  .get(function () {
    return this._password;
  });

// methods > authenticate, encryptPassword, makeSalt
userSchema.methods = {
  authenticate: function (plainText) {
    return this.encryptPassword(plainText) == this.hashed_password;
  },
  encryptPassword: function (password) {
    if (!password) return "";
    try {
      return crypto
        .createHmac("sha1", this.salt)
        .update(password)
        .digest("hex");
    } catch (err) {
      return "";
    }
  },
  makeSalt: function () {
    return Math.round(new Date().valueOf() * Math.random()) + "";
  },
};

// export user model
module.exports = mongoose.model("User", userSchema);

它抛出的错误是throw new TypeError（Invalid schema configuration: \ ${瓦尔}不是 + ^
TypeError：无效的架构配置：``不是路径default上的有效类型。有关https://mongoosejs.com/docs/guide.html#definition有效模式类型的列表，请参见www.example.com。
[nodemon]应用程序崩溃-在启动前等待文件更改...
我已经看过了文档上的新架构，但无论如何也找不出哪里出了问题