npm install m3u

var writer = require('m3u').writer();

// A comment.
writer.comment('I am a comment');

// An empty line.
writer.write(); // blank line

// A playlist item, usually a path or url.
writer.file('foo.mp3');

console.log(writer.toString());

var writer = require('m3u').extendedWriter();

// Adds a playlist item preceeded by an optional EXTINF tag for the duration.
// and title of the item.
writer.file('bar.mp3');
writer.file('bar.mp3', 23);
writer.file('bar.mp3', 23, 'Artist - Title');

console.log(writer.toString());

var writer = require('m3u').httpLiveStreamingWriter();

// EXT-X-TARGETDURATION: Maximum media file duration.
writer.targetDuration(10);

// EXT-X-MEDIA-SEQUENCE: Sequence number of first file (optional).
// (optional)
writer.mediaSequence(0)

// EXT-X-PROGRAM-DATE-TIME: The date of the program's origin, optional.
// (optional)
writer.programDateTime('2011-04-11T21:24:06Z');

// EXT-X-ALLOW-CACHE: Set if the client is allowed to cache this m3u file.
// (optional)
writer.allowCache(true);
writer.allowCache(false);

// EXT-X-PLAYLIST-TYPE: Provides mutability information about the m3u file.
// (optional)
writer.playlistType('EVENT');
writer.playlistType('VOD');

// EXT-X-ENDLIST: Indicates that no more media files will be added to the m3u file.
// (optional)
writer.endlist();

// EXT-X-VERSION: Indicates the compatibility version of the Playlist file.
// (optional)
writer.version(3);

// Adds a playlist as the next item preceeded by an EXT-X-STREAM-INF tag.
writer.playlist('another.m3u', {
  bandwidth: 3000000, // required
  programId: 1,
  codecs: ['avc1.42001e', 'mp4a.40.34'],
  resolution: '640x480',
});

// EXT-X-DISCONTINUITY: Indicates that the player should expect the next video segment to be a different resolution or have a different audio profile than the last.
writer.discontinuity();

console.log(writer.toString());