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Subscribes

The USERNOTICE Twitch command contains a msg-id tag which can be quite useful for reporting about new subscriptions.

twitch.chat.extend('USERNOTICE', function (msg) {
    if (['sub', 'resub'].includes(msg.tags.msgId)) {
        return { command: 'sub' };
    }
    if (['subgift', 'anonsubgift'].includes(msg.tags.msgId)) {
        return { command: 'subgift' };
    }
});

twitch.chat.on('sub', function (msg, channel, message) {
    const displayName = msg.tags.displayName;
    const months = msg.tags.msgParamMonths;

    console.log(`${displayName} has subbed for ${months} months!`);
    console.log(`Saying: "${message}" to ${channel}`);
});

twitch.chat.on('subgift', function (msg, channel, message) {
    const displayName = msg.tags.displayName || 'Anonymous';
    const recipientDisplayName = msg.tags.msgParamRecipientDisplayName;

    console.log(`${displayName} has gifted a sub for ${recipientDisplayName}!`);
    console.log(`Saying: "${message}" to ${channel}`);
});