[Bug Report]: defaultComposer maybe have bug

[nonzzz]

Background

Description

When i use this project to generator my sponsors meta info. I found when i remove Backers . And set anthor tier monthlyDollars as 1. I got a mistake.

Just like

In my consola

Expcet

I noticed that if I run the example it defaults to a blank which is normal. But there may be cases where the user deletes these isn't it? I think defaultComposer should judge 0 and null(undefined) respectively.
Currently. In defaultComposer logic is const finalSponsors = config.tiers!.filter(i => i.monthlyDollars == null || i.monthlyDollars === 0)