refs https://github.com/TryGhost/Toolbox/issues/461
- The 'vary' header with 'Origin' value should only be set when an OPTIONS header is processed. Otherwise we are prone to leaking the vary header modification to further down in the request pipeline
refs https://github.com/TryGhost/Toolbox/issues/461
- The unit test was never using the "OPTIONS" request method, which did not actually trigger the full logic of the "cors" module used under the hood.
- Using the correct request method triggers all the right pathways and tests the state that's closer to the real world - for example the response does get "ended" instead of calling the "next" middleware.
refs https://github.com/TryGhost/Toolbox/issues/461
- Having a 'Origin' in vary header value present on each `OPTIONS` allows to correctly bucket "allowed CORS" and "disallowed CORS" responses in shared caches
refs https://github.com/TryGhost/Toolbox/issues/363
- this middleware is standalone and I suspect we're going to be touching
it further when we work on Ghost's caching in the near future
refs https://github.com/TryGhost/Admin/pull/2252
closes https://github.com/TryGhost/Team/issues/1182
- Admin now copies it's build output to a single env-specific directory rather than splitting html and assets
- `core/built/admin/{development|production}/*`
- updated the admin app's `serveStatic` definition for assets and controller's html serving to reflect the new asset paths
refs https://github.com/TryGhost/Toolbox/issues/354
- this commit turns the Ghost repo into a monorepo so we can bring our
internal packages back in, which makes life easier when working on
Ghost
