@gramio/split

This package can split messages which reach the Telegram limit into multiple parts (messages). This package also split entities so you don't need to do it manually.

Usage

import { splitMessage } from "@gramio/split";

const bot = new Bot(process.env.BOT_TOKEN!).command(
    "start",
    async (context) => {
        const messages = await splitMessage(
            format`${bold("a".repeat(4096 * 2))}`,
            (str) => context.send(str)
            // be worry. if u wants provide an context.send without function wrapper
            // you should use context.send.bind(context) it is required because otherwise it will lose context data
        );

        console.log(messages); // messages is array of second argument results
    }
);

await bot.start();

You can also use it in other frameworks.

import { splitMessage } from "@gramio/split";

const messages = await splitMessage(
    format`${bold("a".repeat(4096 * 2))}`,
    ({ text, entities }) => {
        return someOtherFramework.sendMessage(text, { entities });
    }
);

Configuration

You can also configure maximum text length. By default it's 4096 symbols, but sendPhoto caption has limit 1024 symbols.

const messages = await splitMessage(
    format`${bold("a".repeat(4096))}`,
    ({ text, entities }) => {
        return context.sendPhoto(PHOTO, {
            caption: text,
            caption_entities: entities,
        });
    },
    1024
);

TODO:

• More tests
• Plugin with auto-split
• Split mode by entities
• Auto split action strategies (like sendPhoto caption next splits to sendMessage text)