Reusable Signer instance?

[olizilla]

In the constructor a this.datetime is set and it's used to set the value of params.set('X-Amz-Date', this.datetime) which looks like it's something that should match "the datetime the signed url was genearted" from https://docs.aws.amazon.com/general/latest/gr/sigv4-date-handling.html

Is the intention to just create a new signer for every url that needs signing?

[ice-breaker-tg]

Yeah, the datetime should be set on signing not on construction.