function createInvoiceLink not exist

[tieudat]

I don't use function createInvoiceLink in TelegramBot => My code: const TelegramBot = require("node-telegram-bot-api");

[danielperez9430]

Your example @tieudat is not a full example... So normal that dont works, you dont create a instance. Only import the api, but you need to use it.

This is basic example:

// Import the library
const TelegramBot = require('node-telegram-bot-api');

// Replace the value below with the Telegram token you receive from @BotFather
const token = 'YOUR_TELEGRAM_BOT_TOKEN';

// Create bot that uses 'polling' to fetch new updates
const bot = new TelegramBot(token);

// Now call the function
const title = 'Invoice link product';
const description = 'Our test invoice link product';
const payload = 'sku-p002';
const providerToken = XXXXX.....; // Token of your payment provider get it form botfather bot config 
const currency = 'EUR';
const prices = [{ label: 'NTBA API', amount: 12000 }, { label: 'tax', amount: 10000 }];
      
bot.createInvoiceLink(title, description, payload, providerToken, currency, prices).then(resp => {
       console.log("Invoice Link", resp)
 });

[FrizenVladyslav]

If you're using TypeScript with @types/node-telegram-bot-api, it appears that the createInvoiceLink method was inadvertently omitted.

The workaround involves extending the TypeScript definitions to include the missing createInvoiceLink function. This can be achieved by creating a declaration file (e.g., telegram-bot-extension.d.ts) in your project. Here's how you can do it:

1. Create a file named telegram-bot-extension.d.ts in your project.
2. Copy and paste the following code into this file:

import TelegramModule from 'node-telegram-bot-api'

declare module 'node-telegram-bot-api' {
  interface LabeledPrice {
    label: string
    amount: number // Amount in the smallest units of the currency
  }
  namespace TelegramBot {
    export default class TelegramBot extends TelegramModule {
      /**
       * Creates a link for an invoice.
       * @param {string} title - Product name, 1-32 characters.
       * @param {string} description - Product description, 1-255 characters.
       * @param {string} payload - Bot-defined invoice payload, 1-128 bytes. This will not be displayed to the user, use for your internal processes.
       * @param {string} provider_token - Payment provider token, obtained via @BotFather. Pass an empty string for payments in Telegram Stars. Optional.
       * @param {string} currency - Three-letter ISO 4217 currency code. Pass “XTR” for payments in Telegram Stars.
       * @param {LabeledPrice[]} prices - Price breakdown, a JSON-serialized list of components. Must contain exactly one item for payments in Telegram Stars.
       * @param {number} [max_tip_amount] - The maximum accepted amount for tips in the smallest units of the currency. Defaults to 0. Optional. Not supported for payments in Telegram Stars.
       * @param {number[]} [suggested_tip_amounts] - A JSON-serialized array of suggested amounts of tips in the smallest units of the currency. At most 4 suggested tip amounts can be specified. Optional.
       * @param {string} [provider_data] - JSON-serialized data about the invoice, which will be shared with the payment provider. Optional.
       * @param {string} [photo_url] - URL of the product photo for the invoice. Optional.
       * @param {number} [photo_size] - Photo size in bytes. Optional.
       * @param {number} [photo_width] - Photo width. Optional.
       * @param {number} [photo_height] - Photo height. Optional.
       * @param {boolean} [need_name] - Pass True if you require the user's full name to complete the order. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [need_phone_number] - Pass True if you require the user's phone number to complete the order. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [need_email] - Pass True if you require the user's email address to complete the order. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [need_shipping_address] - Pass True if you require the user's shipping address to complete the order. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [send_phone_number_to_provider] - Pass True if the user's phone number should be sent to the provider. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [send_email_to_provider] - Pass True if the user's email address should be sent to the provider. Ignored for payments in Telegram Stars. Optional.
       * @param {boolean} [is_flexible] - Pass True if the final price depends on the shipping method. Ignored for payments in Telegram Stars. Optional.
       * @returns {string} The created invoice link.
       */
      createInvoiceLink: (
        title: string,
        description: string,
        payload: string,
        provider_token: string,
        currency: string,
        prices: LabeledPrice[],
        max_tip_amount?: number,
        suggested_tip_amounts?: number[],
        provider_data?: string,
        photo_url?: string,
        photo_size?: number,
        photo_width?: number,
        photo_height?: number,
        need_name?: boolean,
        need_phone_number?: boolean,
        need_email?: boolean,
        need_shipping_address?: boolean,
        send_phone_number_to_provider?: boolean,
        send_email_to_provider?: boolean,
        is_flexible?: boolean
      ) => string // Replace `any` with the actual return type of the method
    }
  }
}

Ensure your project is set up to include .d.ts files. You might need to adjust your tsconfig.json if it's not already set up to do so.

This extension will allow you to use the createInvoiceLink function with TypeScript, providing type safety and IntelliSense support in your IDE.

[ivanproskuryakov]

Workaround

  public async generateInvoiceLink(userId: number): Promise<string> {
    const data = {
      title: 'Meercat Coin',
      description: 'Virtual Purchase',
      payload: `User_${userId}`,
      currency: 'XTR',
      prices: JSON.stringify([{amount: 5, label: '5 Virtual Items'}]),
    };
    const params = new URLSearchParams(data).toString();

    const response = await fetch(
      `https://api.telegram.org/bot${this.parameters.botToken}/createInvoiceLink?${params}`
    );
    const json = await response.json();

    return json.result;
  }