@aws-sdk/middleware-serde/dist-es/deserializerMiddleware.js

export const deserializerMiddleware = (options, deserializer) => (next, context) => async (args) => {
    const { response } = await next(args);
    try {
        const parsed = await deserializer(response, options);
        return {
            response,
            output: parsed,
        };
    }
    catch (error) {
        Object.defineProperty(error, "$response", {
            value: response,
        });
        if (!('$metadata' in error)) {
            const hint = `Deserialization error: to see the raw response, inspect the hidden field {error}.$response on this object.`;
            error.message += "\n  " + hint;
        }
        throw error;
    }
};