尝试在打字稿中使用猫鼬和 bcrypt 比较密码

问题描述

我在第 40 行收到以下错误：

    bcrypt.compare(candidatePassword,this.password,function (err,isMatch) {
                                      ~~~~~~~~~~~~~

“函数”类型的参数不可分配给“字符串”类型的参数.ts(2345)

根据 IUser 它应该是字符串，我不知道为什么 ts 意味着它是一个函数。

完整文件：

import { Schema,Document } from 'mongoose';
import bcrypt from 'bcrypt';

const salt: number = 12;

const UserSchema: Schema<IUser> = new Schema({
    email: {
        type: String,required: true,unique: true,},name: {
        type: String,minlength: 3,maxlength: 32,password: {
        type: String,});

// * Hash the password befor it is beeing saved to the database
UserSchema.pre('save',function (next: (err: Error | null) => void) {
    // * Make sure you don't hash the hash
    if (!this.isModified('password')) {
        return next(null);
    }
    bcrypt.hash(this.password,salt,(err: Error,hash: String) => {
        if (err) return next(err);
        this.password = hash;
    });
});

UserSchema.methods.comparePasswords = function (
    candidatePassword: String,next: (err: Error | null,same: Boolean | null) => void,) {
    bcrypt.compare(candidatePassword,isMatch) {
        if (err) {
            return next(err,null);
        }
        next(null,isMatch);
    });
};

export interface IUser extends Document {
    email: String;
    name: String;
    password: String;
}

解决方法

TypeScript 的基本类型有：string、boolean、number 等。参见 Basic Types。但是您正在使用 JavaScript 数据类型的构造函数（String、Boolean 等）。见JavaScript data types and data structures

正确的方法：

import { Schema,Document } from 'mongoose';
import bcrypt from 'bcrypt';

const salt: number = 12;

const UserSchema: Schema<IUser> = new Schema({
  email: {
    type: String,required: true,unique: true,},name: {
    type: String,minlength: 3,maxlength: 32,password: {
    type: String,});

// * Hash the password befor it is beeing saved to the database
UserSchema.pre('save',function (this: IUser,next: (err?: Error | undefined) => void) {
  // * Make sure you don't hash the hash
  if (!this.isModified('password')) {
    return next();
  }
  bcrypt.hash(this.password,salt,(err: Error,hash: string) => {
    if (err) return next(err);
    this.password = hash;
  });
});

UserSchema.methods.comparePasswords = function (
  candidatePassword: string,next: (err: Error | null,same: boolean | null) => void,) {
  bcrypt.compare(candidatePassword,this.password,function (err,isMatch) {
    if (err) {
      return next(err,null);
    }
    next(null,isMatch);
  });
};

export interface IUser extends Document {
  email: string;
  name: string;
  password: string;
  comparePasswords(candidatePassword: string,same: boolean | null) => void): void;
}

包版本：

"mongoose": "^5.7.11"
"@types/mongoose": "^5.5.32"
"typescript": "^3.7.2"