Function paymentMiddlewareFromConfig

paymentMiddlewareFromConfig(
    routes: RoutesConfig,
    facilitatorClients?: any,
    schemes?: SchemeRegistration[],
    paywallConfig?: PaywallConfig,
    paywall?: PaywallProvider,
    syncFacilitatorOnStart?: boolean,
): (req: Request, res: Response, next: NextFunction) => Promise<void>
Express payment middleware for t402 protocol (configuration-based).

Use this when you want to quickly set up middleware with simple configuration. This function creates and configures the t402ResourceServer internally.
Parameters
- routes: RoutesConfig
  Route configurations for protected endpoints
- OptionalfacilitatorClients: any
  Optional facilitator client(s) for payment processing
- Optionalschemes: SchemeRegistration[]
  Optional array of scheme registrations for server-side payment processing
- OptionalpaywallConfig: PaywallConfig
  Optional configuration for the built-in paywall UI
- Optionalpaywall: PaywallProvider
  Optional custom paywall provider (overrides default)
- syncFacilitatorOnStart: boolean = true
  Whether to sync with the facilitator on startup (defaults to true)
Returns (req: Request, res: Response, next: NextFunction) => Promise<void>
Express middleware handler
Example
```
import { paymentMiddlewareFromConfig } from "@t402/express";

app.use(paymentMiddlewareFromConfig(
  routes,
  myFacilitatorClient,
  [{ network: "eip155:8453", server: evmSchemeServer }],
  paywallConfig
));
```
- Defined in http/express/src/index.ts:316