This takes another pass over the modern services to remove unused code. I switched the shared code to use a function instead of a class and removed the indirection in the route params which led to skew between the route and examples and wasn't making things any clearer.
This moves a few helpers from `lib/` to `services/`:
build-status.js
build-status.spec.js
color-formatters.js
color-formatters.spec.js
contributor-count.js
licenses.js
licenses.spec.js
php-version.js
php-version.spec.js
text-formatters.js
text-formatters.spec.js
version.js
version.spec.js
And one from `lib/` to `core/`:
unhandled-rejection.spec.js
The diff is long, but the changes are straightforward.
Ref #2832
Close#2334
To avoid merge conflicts, I've deferred removing the aliasing logic in `prepareExamples`. That whole function will be refactored momentarily, and there's also #2339 open.
The term “url” is overloaded in services, to refer to the Shields route and also the API URL. Calling the Shields URL a “route” is on the whole more descriptive, and makes it clearer and more obvious which one of these we’re talking about. It’s a small thing, though seems like an improvement.
We have a few functions called `buildUrl`. I’ve renamed them to `buildRoute` when they refer to routes, and left them as `buildUrl` when they refer to API URLs.
I included a minor style tweak and some formatting cleanup in `TUTORIAL.md`.
* allow service classes to define a static example
* define static example for some services
(apm, appveyor, cdnjs, clojars, gem, librariesio, npm, uptimerobot)
* add/update tests
This allows us to show an example without making an API call to a live service for better performance.
We can now specify 3 fields in the example definition:
* urlPattern for the version with placeholders e.g: /npm/dw/:package.svg
* ExampleUrl/Uri for the concrete example e.g: /npm/dw/localeval.svg
* PreviewUrl/Uri for the static (or live) image we will actually show
