CODE EXAMPLE FOR JAVASCRIPT

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const { Api, TelegramClient } = require("telegram");
const { StringSession } = require("telegram/sessions");

const session = new StringSession(""); // You should put your string session here
const client = new TelegramClient(session, apiId, apiHash, {});

(async function run() {
  await client.connect(); // This assumes you have already authenticated with .start()

  const result = await client.invoke(
    new Api.upload.GetWebFile({
      location: new Api.InputWebFileLocation({
        url: "some string here",
        accessHash: BigInt("-4156887774564"),
      }),
      offset: 43,
      limit: 100,
    })
  );
  console.log(result); // prints the result
})();