How to play an audio file into Tone.Offline buffer output

Question

Question

How do I play a local audio file inside Tone.Offline so that when it finishes and return it's promised buffer it will contain the played audio?

Code

Tone.Offline(({ transport }) => {
    const p = new Tone.Player(src, () => {
        transport.start();
    }).toDestination();
    
    transport.schedule((time) => {
        p.start(time + 5).stop(time + 9); //this never happen!
    });
}, 10).then((buffer) => { // how do I push parts of my audio file onto the buffer?
    const wav = toWav(buffer);
    saveAs(new Blob([wav], { type: "audio/wav" }), "./blibli.wav");
});

Issue

I've noticed the callback part inside transport.schedule never happen, and so I never get to build the final buffer.