Function toInterceptor

packages/express/src/middleware-interceptor.ts:98–115

(
  firstHandler: ExpressRequestHandler,
  ...additionalHandlers: ExpressRequestHandler[]
)

 * @typeParam CTX - Context type
 */
export function toInterceptor<CTX extends Context = InvocationContext>(
  firstHandler: ExpressRequestHandler,
  ...additionalHandlers: ExpressRequestHandler[]
): GenericInterceptor<CTX> {
  if (additionalHandlers.length === 0) {
    const handlerFn = firstHandler;
    return toInterceptorFromExpressMiddleware<CTX>(handlerFn);
  }
  const handlers = [firstHandler, ...additionalHandlers];
  const interceptorList = handlers.map(handler => toInterceptor<CTX>(handler));
  return async (invocationCtx, next) => {
    const middlewareChain = new GenericInterceptorChain(
      invocationCtx,
      interceptorList,
    );
    return middlewareChain.invokeInterceptors(next);
  };
}

function toInterceptorFromExpressMiddleware<
  CTX extends Context = InvocationContext,