Removing explicit casts from req.app.settings.providers and using
a function.
Switching from Mocha (which was mostly unused) to Jest.
Moving around type definitions and interfaces in a big way to try
and cleanup some legacy.
For improved type safety, this uses a function to return the
IProviders instance from the Express app, replacing all instances
of using req.app.settings.providers as IProviders, etc.
This may also make everything slightly more testable, eventually.
This significant pull request patches the open source project with a number
of updates from inside Microsoft as part of connecting an automated publishing
process to keep the public version up-to-date and buildable.
We are also removing Microsoft-specific endpoints and APIs when easy enough to
do, and adding a "company-specific" extension model to try as we go about this.
Jeff Wilcox
Abraham Ugbeshe
Jeff Wilcox