Two.js Fails to Load In Node Environments

[jonobr1]

Describe the bug
Originally found here. Since porting the build processes to esbuild, Two.js has been unable to load in commonjs environments.

To Reproduce
Steps to reproduce the behavior:
Try to import Two.js in a Node environment (not ES6) via:

const Two = require('two.js');

Expected behavior
Two.js is loaded. But, the result is actually this:

Uncaught (in promise) TypeError: Two is not a constructor
    at sketch (sketch.js? [sm]:11:1)
    at SketchManager.js:967:20

Environment (please select one):

• Code executes in browser (e.g: using script tag to load library)
• Packaged software (e.g: ES6 imports, react, angular, vue.js)
• Running headless (usually Node.js)

[jonobr1]

Fixed and published to v0.8.10