Optional config is not optional

[revjtanton]

Version of the library
5.2.0

Describe the bug
While the type declaration shows each element is optional, the GenerateOptions config itself is still required.

To Reproduce
Link to codesandbox.io or a snippet that will showcase the issue. Use this sandbox as base.
I'm not doing all of that. The error comes from writing something like this in TS: this.#signatureImage = await textToImage.generate(this.signature)

Expected behavior
No error

Screenshots
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Additional context
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[bostrom]

This has been fixed in the beta branch and will be published in the next release.