Number with an equivalent value.
If that had been the case, then we wouldn't have needed a
BigNumber class to begin with.
Referring to your actual question - you haven't really explained why you need to perform this conversion.
Your question implies that you don't like the printout, in which case you can fix your code as follows:
let rate = await this.crowdsale.rate();
If you're interested in performing additional calculations, then you can simply use
So technically speaking, there shouldn't be any need convert your