NestJS authGuard 有效

Question

I'm implementing @nestjs/passport ('jwt') and using (exactly like in the instructions) the @UseGuards(AuthGuard()) decorator but i'm getting the following exception:

common_1.Optional is not a function

Does anyone have any idea what could be the problem?

Dependencies:

"@nestjs/common": "^5.0.0",

 "@nestjs/core": "^5.0.0", "@nestjs/cqrs": "^5.1.1", "@nestjs/jwt": "^0.2.0", "@nestjs/mongoose": "^5.1.0", "@nestjs/passport": "^5.1.0", "@nestjs/swagger": "^2.4.4", "@nestjs/typeorm": "^5.2.2", "automapper-ts": "^1.9.0", "config": "^2.0.1", "fastify-formbody": "^2.0.0", "lodash": "^4.17.10", "mongodb": "^3.1.6", "mongoose": "^5.2.9", "mysql": "^2.16.0", "nestjs-rmq": "^0.1.3", "nestjs-typegoose": "^5.0.1", "passport": "^0.4.0", "passport-jwt": "^4.0.0", "reflect-metadata": "^0.1.12", "rxjs": "^6.0.0", "typegoose": "^5.4.0", "typeorm": "^0.2.7", "typescript": "^2.6.2",

Answer 1

The dependencies are out of date. Try running npm update .

Answer 2

Perhaps I badly understand the question, but to use a guard, you can give a guard instance or give the class and let nest create the instance, a guard is **not a function*

@UseGuards(AuthGuard()) should be : @UseGuards(new AuthGuard()) or @UseGuards(AuthGuard)

Answer 3

It looks like you use old dependencies.

install npm g npm-check

RUN npm-check -u

https://www.npmjs.com/package/npm-check

Answer 4

dependencies problem

try this :

$ sudo npm install -g npm-check

$ npm-check -u