ThunderIDExpressClient

ThunderIDExpressClient is the Express-aware client class exported by @thunderid/express. It extends ThunderIDNodeClient and adds Express-specific request and configuration access.

Import

const {ThunderIDExpressClient} = require('@thunderid/express');

Overview

In most applications, you do not instantiate this class directly. The thunderID() middleware creates and initializes it for you, then attaches it to req.thunderIDAuth and res.thunderIDAuth.

Express-Specific Members

expressConfig

Returns the initialized ExpressClientConfig value or undefined if the client has not been initialized yet.

Member	Type	Description
expressConfig	ExpressClientConfig | undefined	The Express SDK configuration used to initialize the client

getUserFromRequest(req)

Reads the session ID from req.cookies[SESSION_COOKIE_NAME] and returns the current user for that session.

getUserFromRequest(req: express.Request): Promise<User | undefined>

index.js

app.get('/me', async (req, res) => {
  const user = await req.thunderIDAuth.getUserFromRequest(req);
  res.json(user);
});

Inherited Behavior

Because ThunderIDExpressClient extends ThunderIDNodeClient, inherited Node client methods are also available. This Express SDK section does not provide a full reference for the inherited Node surface.

Notes

• getUserFromRequest(req) depends on req.cookies, so mount cookie-parser before routes that use it
• signIn() and signOut() are also overridden internally to integrate with Express request and response handling, but this page focuses on the public Express-specific additions

Related APIs

• thunderID()
• ExpressClientConfig
• Redirect Flow