import { toEndpointV1 } from "@smithy/core/endpoints";
export const serializerMiddleware = (options, serializer) => (next, context) => async (args) => {
    const endpointConfig = options;
    const endpoint = context.endpointV2
        ? async () => toEndpointV1(context.endpointV2)
        : endpointConfig.endpoint;
    if (!endpoint) {
        throw new Error("No valid endpoint provider available.");
    }
    const request = await serializer(args.input, { ...options, endpoint });
    return next({
        ...args,
        request,
    });
};