typescript - TypeError : Class constructor MixinStrategy cannot be invoked without 'new'

我跟随着jwt示例，例如在https://docs.nestjs.com/techniques/authentication中找到的。我复制并粘贴了示例。在npm安装必要的位和行之后，我得到了这个错误，该错误在我刚刚复制的样本中没有发生。我不知道这意味着什么!有人有想法吗？

TypeError: Class constructor MixinStrategy cannot be invoked without 'new'

   8 | export class JwtStrategy extends PassportStrategy(Strategy) {
   9 |   constructor(private readonly authService: AuthService) {
> 10 |     super({
  11 |       jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
  12 |       secretOrKey: 'secretKey',
  13 |     });

  at new JwtStrategy (data/auth/strategies/jwt.strategy.ts:10:5)
  at resolveConstructorParams (../node_modules/@nestjs/core/injector/injector.js:64:84)
  at Injector.resolveConstructorParams (../node_modules/@nestjs/core/injector/injector.js:86:30)

最佳答案

project缺少@types/passport-jwt类型，因此应另外安装它们:

npm i -D @types/passport-jwt

这导致



错误，因为没有正确键入@nestjs/passport； PassportStrategy return type is any 。

为了解决这个问题，

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
...

应该更改为:

import { ExtractJwt, Strategy } from 'passport-jwt';
import { AbstractStrategy, PassportStrategy } from '@nestjs/passport';
...
const PassportJwtStrategy: new(...args) => AbstractStrategy & Strategy = PassportStrategy(Strategy);

@Injectable()
export class JwtStrategy extends PassportJwtStrategy {
...

关于typescript - TypeError : Class constructor MixinStrategy cannot be invoked without 'new' ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/50654877/