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Class: JwtStrategy

JWT authentication strategy for Passport.

Description​

This strategy implements JWT token validation and extraction from requests. It is used by the authentication guards to protect routes that require authentication.

Configuration:

  • Extracts JWT from the Authorization header using the Bearer scheme
  • Validates token expiration
  • Uses JWT_SECRET from environment variables for token verification

Example​

// Protected route using JWT authentication
@UseGuards(JwtAuthGuard)
@Get('profile')
getProfile(@Request() req) {
  return req.user;
}

Extends​

  • any

Constructors​

new JwtStrategy()​

new JwtStrategy(configService): JwtStrategy

Configures the JWT strategy with the necessary options.

Parameters​

configService​

ConfigService

NestJS config service for accessing environment variables

Returns​

JwtStrategy

Overrides​

PassportStrategy(Strategy).constructor

Methods​

validate()​

validate(payload): object

Validates and transforms the JWT payload into a user object.

Parameters​

payload​

any

The decoded JWT payload

Returns​

object

An object containing the user ID extracted from the payload

id​

id: any = payload.sub