async secretOrKeyProvider about jwt HOT 14 CLOSED

import { Module } from '@nestjs/common';
import { JwtModule } from '@nestjs/jwt';
import { JwksClient } from 'jwks-rsa';
import * as jwt from 'jsonwebtoken';

@Module({
  imports: [
    JwtModule.registerAsync({
      async useFactory() {
        const client = new JwksClient({
          cache: true,
          rateLimit: true,
          jwksRequestsPerMinute: 5,
          jwksUri: `https://login.microsoftonline.com/common/discovery/keys`,
        });
        const keys = await client.getSigningKeys();

        return {
          secretOrKeyProvider(requestType, token: string) {
            const decoded = jwt.decode(token, { complete: true });
            return keys
              .find((key) => key.kid === decoded.header.kid)
              .getPublicKey();
          },
          verifyOptions: {
            audience: '(client id)',
            issuer:
              'https://login.microsoftonline.com/(tenant id}/v2.0',
            algorithms: ['RS256'],
          },
        };
      },
    }),
  ],
})
export class AuthModule {}