Typescript bundling format for dependencies of addons

Open ended question - here is a Typescript dependency that I have included in a few addons. It is very simple. Publishes a umd format dist and that is it. Is there anything else I should be considering when building Typescript libraries for the Ember (and other) ecosystem? Sorry for the lack of specificity but looking to build a source of information / examples to help others.

Ok got a small PR going. Keeps es format when first bundling with typescript and available under pkg.json “module” field.