Notes

todo

Pass in res to parsers so you can get both headers and body? Some openapi things define headers in responses, for example for limit rating. Can/should that be parsed out along with the data with the current methods?
Terminology: fetcher
pass body text and response to error mapper.
Signature for errors passed to error mapper is wrong? It can get other things than that in the sig?
Tests for text/response in error object
Add response object to the result?
Add kitchen sink tests
Helpers for isWrappedError etc?
Clean up where error handling happens
Test for throwing in weird places
Have more custom errors? For parsing?
Docs
Add response text if available to error?
Are there tests missing for headers set when urlsearchparams as body?
Should map be allowed when there is no parser?

Support browser with native fetch, not pull in node stuff?
Interceptors / event handlers?
Add more options to fetchOptions
Should the baseUrl call allow function?
Narrow after calling method and path?
Support array as return value from path? As in ['users', userId,'pages',pageNum] turns into /users/${userId}/pages/${pageNum}
Make CallRecord typed?