type Dict<T> = Record<string, T>;
type Headers = Dict<string | ReadonlyArray<string>>;

type Payload<T> = { data: T; headers: Headers };
type Abortable = { aborted: boolean };

type Options = {
	boundary?: string;
};

declare const message: (payload: any, headers: Headers) => string;
declare const generate: <T extends unknown>(iterator: AsyncIterableIterator<T> | IterableIterator<T>, boundary: string, write: (chunk: string) => Promise<any> | any, abort?: Abortable) => Promise<void>;

export { Options, Payload, generate, message };