Output is blank

[mayeaux]

const subsrt = require('subsrt');

const vttContent = `WEBVTT

00:00.000 --> 00:04.000
Welcome to English in a Minute.

00:04.000 --> 00:07.000
Most people enjoy going to parties.

00:07.000 --> 00:25.000
You got to be a...`;

const options = { format: 'srt' };
const srtContent = subsrt.convert(vttContent, options);

console.log('SRT content:', srtContent);