The change in this commits are pretty involved but cannot be split
into small commits. The main changes in this commits are:
* Remove declare module * now that we don't need it
* Normalize import paths so typescript is happy
Previously, we were using wrong import paths and so typescript couldn't
really provide full types information for imports. The wrong paths isn't
a bug because it was done to make sure it work when it was imported via a
script tag; we fix this by using require inside the script tag in main.html.
Also, did audit to make sure we correctly use __dirname not that it's
value will be diffrent, it won't be js/ but will be respective to the file
path of the module.
