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// === Needed importsimport { InputFileProxy } from "@grammyjs/types";import { Agent } from "https";import { basename } from "path";import { Readable } from "stream";import type { ReadStream } from "fs";import { URL } from "url";
// === Export all API typesexport * from "@grammyjs/types";
// === Export debugexport { debug } from "debug";
// === Export system-specific operations// Turn an AsyncIterable<Uint8Array> into a streamexport const itrToStream = (itr: AsyncIterable<Uint8Array>) =>    Readable.from(itr, { objectMode: false });// Turn a file path into an AsyncIterable<Uint8Array>export { createReadStream as streamFile } from "fs";
// === Base configuration for `fetch` callsexport const baseFetchConfig = {    compress: true,    agent: new Agent({ keepAlive: true }),};
/** Something that looks like a URL. */interface URLLike {    /**     * Identifier of the resouce. Must be in a format that can be parsed by the     * URL constructor.     */    url: string;}// === InputFile handling and File augmenting// Accessor for file data in `InputFile` instancesexport const inputFileData = Symbol("InputFile data");
/** * An `InputFile` wraps a number of different sources for [sending * files](https://grammy.dev/guide/files.html#uploading-your-own-file). * * It corresponds to the `InputFile` type in the [Telegram Bot API * Reference](https://core.telegram.org/bots/api#inputfile). */export class InputFile {    private consumed = false;    private readonly fileData: ConstructorParameters<typeof InputFile>[0];    /**     * Optional name of the constructed `InputFile` instance.     *     * Check out the     * [documenation](https://grammy.dev/guide/files.html#uploading-your-own-file)     * on sending files with `InputFile`.     */    public readonly filename?: string;    /**     * Constructs an `InputFile` that can be used in the API to send files.     *     * @param file A path to a local file or a `Buffer` or a `fs.ReadStream` that specifies the file data     * @param filename Optional name of the file     */    constructor(        file:            | string            | URL            | URLLike            | Uint8Array            | ReadStream            | AsyncIterable<Uint8Array>,        filename?: string,    ) {        this.fileData = file;        if (filename === undefined && typeof file === "string") {            filename = basename(file);        }        this.filename = filename;    }    get [inputFileData]() {        if (this.consumed) {            throw new Error("Cannot reuse InputFile data source!");        }        let data = this.fileData;        if (            typeof data === "object" && ("url" in data || data instanceof URL)        ) {            data = fetchFile(data instanceof URL ? data : data.url);        } else if (            typeof data !== "string" && (!(data instanceof Uint8Array))        ) {            this.consumed = false;        }        return data;    }}
async function* fetchFile(url: string | URL): AsyncIterable<Uint8Array> {    const { body } = await fetch(url);    if (body === null) {        throw new Error(            `Download failed, no response body from '${url}'`,        );    }    for await (const chunk of body) {        if (typeof chunk === "string") {            throw new Error(                `Could not transfer file, received string data instead of bytes from '${url}'`,            );        }        yield chunk;    }}
// === Export InputFile typestype GrammyTypes = InputFileProxy<InputFile>;
/** Wrapper type to bundle all methods of the Telegram API */export type Telegram = GrammyTypes["Telegram"];
/** Utility type providing the argument type for the given method name or `{}` if the method does not take any parameters */export type Opts<M extends keyof GrammyTypes["Telegram"]> =    GrammyTypes["Opts"][M];
/** This object represents the content of a media message to be sent. It should be one of- InputMediaAnimation- InputMediaDocument- InputMediaAudio- InputMediaPhoto- InputMediaVideo */export type InputMedia = GrammyTypes["InputMedia"];/** Represents a photo to be sent. */export type InputMediaPhoto = GrammyTypes["InputMediaPhoto"];/** Represents a video to be sent. */export type InputMediaVideo = GrammyTypes["InputMediaVideo"];/** Represents an animation file (GIF or H.264/MPEG-4 AVC video without sound) to be sent. */export type InputMediaAnimation = GrammyTypes["InputMediaAnimation"];/** Represents an audio file to be treated as music to be sent. */export type InputMediaAudio = GrammyTypes["InputMediaAudio"];/** Represents a general file to be sent. */export type InputMediaDocument = GrammyTypes["InputMediaDocument"];