This is somehow related to the character used for the argument of transMu: η

var transMu = function (dictFunctor) {
    return function (η) {
        return function ($22) {
            return roll(Data_Functor.map(dictFunctor)(transMu(dictFunctor)(η))(η(unroll($22))));
        };
    };
};

SyntaxError: Invalid character '\u0183'

Is your change request related to a problem? Please describe.
As described in the documentation section of the Library Guidelines, Contributors libraries are expected to have in their README a short summary of the library's purpose, installation instructions, and a quick start with a minimal usage example.

This library currently doesn't have a quick start in the README.

Describe the solution you'd like
The library needs a quick start section after the installation instructions. machines is one example of a library with a quick start.

At least we could show in brief what you might use the library for, even if it's only one or two tiny examples.

Additional context
See the Governance repository for more information about requirements in the Contributors organization.

E.g., Mu Maybe has the myriad instances over natural numbers, Mu (XNor a) has the free monoid instance, etc. I feel like it should maybe be

instance Alt f => Semigroup (First (Mu f))

(assuming there’s some newtype First) to avoid blessing this instance over other ones that users may be expecting depending on the pattern functor.