This pull request closes#2551: making sure that the keywords don't already appear in the example's title.
I also added validation that checks that they are at least two characters long, as this is enforced by the homepage when type your search.
This removes `LONG_CACHE` and its descendants, which was a feature that added `?maxAge` to the live preview badges in the frontend. Since they are all static that is no longer needed, as the static badges all have longer cache timeouts regardless.
The static previews don't support the social badges. Adding that lets us remove support for `exampleUrl`. Close#2479.
This includes `style` and `namedLogo` in the service-definition export and updates the frontend to use it. To accomplish this, it passes `namedLogo` through `coalesceBadge`. After logo resolution is moved to `makeBadge` this duplication can be removed, as `logo` will no longer be needed in the result of `coalesceBadge`.
The route helper functions are fairly well isolated from the rest of BaseService, with a few convenient entry points. They are easier to test in isolation.
The way the code was written before, `pathToRegexp` was invoked once for every request, which seems inefficient.
`route` was validated when it was used, though it seems more helpful to validate it up front.
This breaks out `_makeFullUrl`, `_regex`, `_regexFromPath` into new helper functions `makeFullUrl`, `assertValidRoute`, `prepareRoute`, and `namedParamsForMatch`.
It adds validation to route, and updates the services without patterns to include one, in order to pass the new validation rules.
`base.js` is pretty long and `_makeBadgeData` is one of the most complex
functions in it.
It's a pure function so it's easy to test in isolation. This moves the function into its own module and reorganizes the tests in a way that makes it evaluate what it's doing, and easier to test what is and isn't covered.
Ref https://github.com/badges/shields/pull/2796#discussion_r249251008
