export function setUpCloudFunctionFactory(factoryConfig: {
  createCloudFunctionCaller: CreateCloudFunctionCaller;
}) {
  return {
    cloudFunction(functionConfig: { path: string }) {
      return {
        implement<T extends AnyFunction>(compute: T): CloudFunctionFor<T> {
          const cloudFunctionCaller =
            factoryConfig.createCloudFunctionCaller<T>(functionConfig);
          return cloudFunctionCaller;
        },
      };
    },
  };
}
export type CreateCloudFunctionCaller = <
  T extends AnyFunction,
>(functionConfig: {
  path: string;
}) => CloudFunctionFor<T>;
export type CloudFunctionFor<T extends AnyFunction> = (
  ...args: Parameters<T>
) => Promise<ReturnType<T> | Error>;
export type AnyFunction = (...args: any[]) => any;