fix: Add missing captcha arg to signup functions

[mriccid]

Changes

• Add options.captcha arg to DBConnection.prototype.signup function
• Add options.captcha arg to WebAuth.prototype.signup function

References

Redirect.prototype.signupAndLogin already has this arg and passes it through to DBConnection.prototype.signup which is how I discovered that this was supported. Seems like the underlying functions and backend supports this arg. I've copied the JSDoc from signupAndLogin to ensure consistency.

Testing

I'm unsure of how to add an automated test to ensure that this works, however I have tested it in a project and passing through options.captcha with a real captcha value worked with an Auth0 tenant with Bot Protection enabled.

Checklist

• I have read the Auth0 general contribution guidelines
• I have read the Auth0 Code of Conduct
• All tests and linters described in the Develop section run without errors

[frederikprijck]

Thanks for the PR.

However, the property you send isn't documented on the corresponding API docs, so we shouldn't add it to the SDK as that could indicate it's not officially supported, or not recommended to be used.

That said, we can always check internally what the idea is behind this and see if this should be documented on the API docs. If that would be the case, we can merge this PR. If not, we will need to close it.

Will get back to this.

[mriccid]

Thanks for the PR.

However, the property you send isn't documented on the corresponding API docs, so we shouldn't add it to the SDK as that could indicate it's not officially supported, or not recommended to be used.

That said, we can always check internally what the idea is behind this and see if this should be documented on the API docs. If that would be the case, we can merge this PR. If not, we will need to close it.

Will get back to this.

That's interesting. Makes sense, let me know @frederikprijck. Thanks for getting back to me.

For what it's worth, there's official documentation that refers to this captcha argument that I found