Normal Description
The ui-extension is, among others, transpiled into a JavaScript module dist/ui-extension.js. This file should only contain the code of ui-extension itself, and not of its dependencies (the Penpal and Emittery libraries). Those dependencies should be included by the final build system. Yet the ui-extension.js file does include the source of Penpal and Emittery, making it self-contained. That should not happen.