如何解决bcrypt.hash 不是函数 Typescript 和 express 中的错误
我正在使用 Typescript、typeorm、express 和 JWT 创建一个身份验证 API
TypeError: bcrypt.hash is not a function
at User.<anonymous> (file:///home/e-wave/Desktop/junkies/typechat/public/entity/User.js:25:42)
at Generator.next (<anonymous>)
at file:///home/e-wave/Desktop/junkies/typechat/public/entity/User.js:16:71
at new Promise (<anonymous>)
at __awaiter (file:///home/e-wave/Desktop/junkies/typechat/public/entity/User.js:12:12)
at User.hashPassword (file:///home/e-wave/Desktop/junkies/typechat/public/entity/User.js:24:16)
at file:///home/e-wave/Desktop/junkies/typechat/public/controllers/control.js:81:23
at Generator.next (<anonymous>)
at fulfilled (file:///home/e-wave/Desktop/junkies/typechat/public/controllers/control.js:4:58)
当我尝试对 json Web 令牌有效负载进行签名时，当我尝试在登录时比较 bcrypt 哈希值（我分别得到 jwt.sign is not a function 和 bcrypt.compare is not a function）时，会发生同样的事情
import "reflect-Metadata";
import {createConnection} from "typeorm";
import User from "./entity/User.js";
import express from 'express';
import { router } from "./routes/routes.js";
import morgan from 'morgan';
import {config} from "dotenv"
config(
)
createConnection({
type:"postgres",host: process.env.RDS_HOSTNAME,port: 5432,username: process.env.RDS_USERNAME,password: process.env.RDS_PASSWORD,// database: "database-1",entities: [
User
],migrations:["migration/*.js"],cli:{
migrationsDir:"migration"
},synchronize: false,logging: false
}).then(connection => {
// here you can start to work with your entities
const app = express()
const PORT:string|number = process.env.PORT||3000
app.use(express.json())
app.use(morgan('dev'))
app.use('/',router)
app.listen(PORT,():void=> console.log(` Database connected and this app is running on port ${PORT}`))
}).catch(error => console.error(error));
我的 User.ts 文件：
import {Entity,PrimaryGeneratedColumn,Column,CreateDateColumn,UpdateDateColumn,BaseEntity} from "typeorm";
import {isEmail} from "class-validator"
import * as bcrypt from "bcryptjs";
@Entity()
export default class User extends BaseEntity{
@PrimaryGeneratedColumn("uuid")
id: string;
@Column({type:"varchar",unique:true,nullable:false})
email: string;
@Column({nullable:false})
password: string;
@CreateDateColumn()
createdAt:Date
@UpdateDateColumn()
updatedAt:Date
//hash password method before saving to db
async hashPassword() {
this.password = await bcrypt.hash(this.password,10);
return this.password
}
}
我的 control.ts 文件：
import {
Request,Response
} from 'express';
import * as jwt from 'jsonwebtoken';
import {
validate
} from "class-validator"
import User from '../entity/User.js'
import {
getManager,getRepository
} from "typeorm"
import * as bcrypt from "bcryptjs"
//create an expiry date for our jwt token 1 day
const MAXAGE: number = 24 * 60 * 60 * 1000
class MainControllers {
//sign a json web token
static welcome = (req: Request,res: Response) => {
res.send({
"text": "message"
})
}
//render login view
static loginGet = (req: Request,res: Response) => {
res.render('login')
}
//logining with credentials
static loginPost = async(req: Request,res: Response) => {
try {
//login user
let {
email,password
} = req.body
if (!email || !password) return res.status(404).json({
message: "Not found !"
})
let userLoginRepository = getRepository(User)
//find the user attempting to login via the database
const findUser = await userLoginRepository.findOne({
where: {
email
}
})
if (!findUser) return res.json({
code: 404,message: "user not found in our records"
})
//compare passwords
let auth = await bcrypt.compare(password,findUser.password);
if (!auth) return res.status(401).json({
message: "invalid password"
})
//else login the user and create the token valid for one day
const token: string = jwt.sign({
email
},process.env.JWT_SECRET || "",{
expiresIn: process.env.JWT_EXPIRES
})
return res.status(200).json({
message: "login successfully",token
})
} catch (err) {
console.error(err)
res.status(500).send({
message: err.message
})
}
}
//render signup view
static signUpGet = (req: Request,res: Response) => {
res.render('signup')
}
//signing up with credentials
static signUpPost = async(req: Request,res: Response) => {
try {
let {
email,password
} = req.body
const newUser = new User()
newUser.email = email
newUser.password = password
//validate the input fields
let errors = await validate(newUser)
console.log("errors are:",errors)
if (errors.length > 0) return res.status(500).json({
message: errors
})
//generate the token
const token: string = jwt.sign({
email
},{
expiresIn: process.env.JWT_EXPIRES
})
res.cookie('jwtoken',token,{
maxAge: MAXAGE,signed: true,httpOnly: true
})
await newUser.hashPassword()
const dbRepository = getRepository(User)
await dbRepository.save(newUser)
return res.status(201).send({
message: "user created",user: newUser,token: token
})
} catch (err) {
console.error(err);
return res.status(500).send({
message: err.message
});
}
}
}
export default MainControllers;
我的 routes.ts 文件：
import {Router} from 'express';
import MainControllers from '../controllers/control.js';
//import * as cookieParser from "cookie-parser"
import cookieParser from 'cookie-parser';
export const router = Router()
router.use(cookieParser())
router.get('/welcome',MainControllers.welcome);
router.get('/login',MainControllers.loginGet)
router.post('/login',MainControllers.loginPost);
router.get('/signup',MainControllers.signUpGet)
router.post('/signup',MainControllers.signUpPost)
请问我可能做错了什么？
编辑
{
"compilerOptions": {
/* Visit https://aka.ms/tsconfig.json to read more about this file */
/* Basic Options */
// "incremental": true,/* Enable incremental compilation */
"target": "ES2015",/* Specify ECMAScript target version: 'ES3' (default),'ES5','ES2015','ES2016','ES2017','ES2018','ES2019','ES2020','ES2021',or 'ESNEXT'. */
"module": "es2015",/* Specify module code generation: 'none','commonjs','amd','system','umd','es2015','ES2020',or 'ESNext'. */
"lib": ["ES5","ES2015","ES2016","ES2017","ES2018"],/* Specify library files to be included in the compilation. */
// "allowJs": true,/* Allow javascript files to be compiled. */
// "checkJs": true,/* Report errors in .js files. */
// "jsx": "preserve",/* Specify JSX code generation: 'preserve','react-native','react','react-jsx' or 'react-jsxdev'. */
// "declaration": true,/* Generates corresponding '.d.ts' file. */
// "declarationMap": true,/* Generates a sourcemap for each corresponding '.d.ts' file. */
"sourceMap": true,/* Generates corresponding '.map' file. */
// "outFile": "./",/* Concatenate and emit output to single file. */
"outDir": "./public",/* Redirect output structure to the directory. */
"rootDir": "./src",/* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
// "composite": true,/* Enable project compilation */
// "tsBuildInfoFile": "./",/* Specify file to store incremental compilation information */
// "removeComments": true,/* Do not emit comments to output. */
// "noEmit": true,/* Do not emit outputs. */
// "importHelpers": true,/* Import emit helpers from 'tslib'. */
// "downlevelIteration": true,/* Provide full support for iterables in 'for-of',spread,and destructuring when targeting 'ES5' or 'ES3'. */
// "isolatedModules": true,/* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
/* Strict Type-Checking Options */
"strict": true,/* Enable all strict type-checking options. */
// "noImplicitAny": true,/* Raise error on expressions and declarations with an implied 'any' type. */
// "strictnullchecks": true,/* Enable strict null checks. */
// "strictFunctionTypes": true,/* Enable strict checking of function types. */
// "strictBindCallApply": true,/* Enable strict 'bind','call',and 'apply' methods on functions. */
"strictPropertyInitialization": false,/* Enable strict checking of property initialization in classes. */
// "noImplicitThis": true,/* Raise error on 'this' expressions with an implied 'any' type. */
// "alwaysstrict": true,/* Parse in strict mode and emit "use strict" for each source file. */
/* Additional Checks */
// "noUnusedLocals": true,/* Report errors on unused locals. */
// "noUnusedParameters": true,/* Report errors on unused parameters. */
// "noImplicitReturns": true,/* Report error when not all code paths in function return a value. */
// "noFallthroughCasesInSwitch": true,/* Report errors for fallthrough cases in switch statement. */
// "noUncheckedindexedAccess": true,/* Include 'undefined' in index signature results */
// "noImplicitOverride": true,/* Ensure overriding members in derived classes are marked with an 'override' modifier. */
// "nopropertyAccessFromIndexSignature": true,/* Require undeclared properties from index signatures to use element accesses. */
/* Module Resolution Options */
"moduleResolution": "node",/* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
"baseUrl": "./",/* Base directory to resolve non-absolute module names. */
// "paths": {},/* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
// "rootDirs": [],/* List of root folders whose combined content represents the structure of the project at runtime. */
// "typeRoots": [],/* List of folders to include type deFinitions from. */
// "types": [],/* Type declaration files to be included in compilation. */
"allowSyntheticDefaultImports": true,/* Allow default imports from modules with no default export. This does not affect code emit,just typechecking. */
"esModuleInterop": true,/* Enables emit interoperability between Commonjs and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
// "preserveSymlinks": true,/* Do not resolve the real path of symlinks. */
// "allowUmdGlobalAccess": true,/* Allow accessing UMD globals from modules. */
/* Source Map Options */
// "sourceRoot": "",/* Specify the location where debugger should locate TypeScript files instead of source locations. */
// "mapRoot": "",/* Specify the location where debugger should locate map files instead of generated locations. */
// "inlinesourceMap": true,/* Emit a single file with source maps instead of having a separate file. */
// "inlinesources": true,/* Emit the source alongside the sourcemaps within a single file; requires '--inlinesourceMap' or '--sourceMap' to be set. */
/* Experimental Options */
"experimentalDecorators": true,/* Enables experimental support for ES7 decorators. */
"emitDecoratorMetadata": true,/* Enables experimental support for emitting type Metadata for decorators. */
/* Advanced Options */
"skipLibCheck": true,/* Skip type checking of declaration files. */
"forceConsistentCasingInFileNames": true /* disallow inconsistently-cased references to the same file. */
},"include": ["src"]
}这也是我的 package.json 文件（以防我应该安装任何软件包）：
{
"name": "typechat","version": "1.0.0","description": "A chat app built with typescript and mongodb","main": "index.js","author": "E-wave","license": "MIT","type": "module","dependencies": {
"aws-sdk": "^2.931.0","bcryptjs": "^2.4.3","class-validator": "^0.13.1","cookie-parser": "^1.4.5","dotenv": "^10.0.0","express": "^4.17.1","jsonwebtoken": "^8.5.1","pg": "^8.6.0","reflect-Metadata": "^0.1.10","typeorm": "0.2.34"
},"devDependencies": {
"@types/bcryptjs": "^2.4.2","@types/cookie-parser": "^1.4.2","@types/express": "^4.17.12","@types/jsonwebtoken": "^8.5.2","@types/morgan": "^1.9.2","@types/MysqL": "^2.15.18","@types/node": "^8.0.29","morgan": "^1.10.0","ts-node": "3.3.0","typescript": "^4.3.4"
},"scripts": {
"start": "src/index.ts","dev": "tsc && nodemon public/index.js"
}
}解决方法
问题是您在 "module": "es2015" 文件中使用了 tsconfig.json 设置，在 package.json 中使用了 "type": "module"。但是 bcryptjs 是一个 commonjs 模块。因为它不支持 esm 兼容性选项。从 es2015 代码导入时唯一的导出是 default。由于您已经设置了 "allowSytheticDefaultImports": "true"，因此您只需将导入重写为：
...
import bcrypt from 'bcryptjs'
...
bcrypt.hash(...)
或作为
...
import { default as bcrypt } from 'bcryptjs'
...
bcrypt.hash(...)
...
这很可能是因为缺少类型或包。
有些软件包没有开箱即用的打字稿支持，因此需要使用 Definetly Typed repository 安装相应的类型。
因此，在您的情况下，如果您尝试为 bcryptjs 和 jsonwebtoken 安装相应的类型，您的问题可能会得到解决。
$ npm i -D @types/bcryptjs @types/jsonwebtoken
由于这些仅在开发时需要，我们可以使用 -D 标记它们以仅将软件包安装为开发依赖项。
我还建议您查看 NestJS，这是一个用于 NodeJS 的打字稿框架，具有许多不错的功能和方法。
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