[Solved] How safe is save()?

I want to store an integer using FlashEEPROM. However, only the lowest 8 bits are stored:

> var f = new (require("FlashEEPROM"))();
> f.write(1, 1025);
> f.read(1);
=new Uint8Array([1])

E.toUint8Array() also doesn't help:

E.toUint8Array(1025)
=new Uint8Array([1])