In master, we have

typefontWeight= [  |#normal  |#bold  |#100...  |#900]

Unfortunately, this is not correct. We need a string"100", not an int100. But this can not be represented as an enum / polymorphic variant (#"100" just gets reformatted to#100, and as far as I can see it is not currently possible to represent the difference in the AST).

We could use an abstract type + an@obj external make with the@string annotation instead, but this usage of@string is likely to get deprecated in ReScript 11, too.

Any other ideas?