[WIP] Use SnackPlayer for API/Component examples

[hramos]

Exploring the possibility of rendering embedded Snack players for each of the examples in the API/Components docs. It works for some components such as ViewPagerAndroid (with warnings), but many other examples fail to load due to the expectation these will be running inside the UIExplorer app.

ViewPagerAndroid

This example works pretty well inside the Snack Player:

Warnings

These can be solved by updating all of our examples to use imports.

...but we will also need to update the examples to export a class by default:

StatusBar

Some examples such as StatusBarExample.js won't load due to the way they export multiple possible examples for use in the UIExplorer app.

AlertIOS

These require()s break the example in Snack:

See also export warnings.

Next Steps

• Should we update all examples so that they both work in the UIExplorer app as well as in the Snack Player? Or should we decouple these examples from the UIExplorer?

[mkonicek]

Thanks for doing this!

[hramos]

With #13606 the new direction is to de-emphasize these as examples. They're part of our testing infrastructure and may not all be fit for instruction.

Let's remove the examples from API/Components all together, and focus on providing more sample code in the full Guides themselves.