figure out how to import node_modules libraries into vanilla javascript

[smcalilly]

We can do this in React, but it doesn't currently work when you try to use npm dependencies in vanilla javascript files. My current workaround is to source the dependencies from a cdn via the script tag within the html. But this breaks eslint — the linter treats that dependency as undefined if you use it in a javascript file. Here's an example where eslint fails because of this: https://github.com/datamade/il-nwss-dashboard/runs/7433410692?check_suite_focus=true. You can work that by adding /*global Plot */ to the top of the failing file, which I'd rather not do because that can get messy and out of hand.

[smcalilly]

closing as this will be irrelevant once we incorporate webpack.