Better types in examples

[MoonE]

This adds a lot of types, but also includes some code improvements.

• wms-custom-proj did some unnecessary steps when converting between projections
• The Edit button to edit on codesandbox now uses the 'dev' tag as the version instead of an non-existent version like v10.4.1-dev
• Some examples updated their style on each pointermove event instead of only when the selection changes

[github-actions[bot]]

📦 Preview the website for this branch here: https://deploy-preview-16628--ol-site.netlify.app/.

[tschaub]

I appreciate the work you’ve done here, but fear it may just be undone over time if there is nothing enforcing stricter type checking. I know that I have removed type casts over time when I come across one that isn’t required (or isn’t being enforced).

Is there a setting that you’re working with that complains about the unknown types? Can we incrementally add checks to ensure the work you’ve done isn’t undone?

[MoonE]

This PR here adds types to all cases that were obvious to me. For the reset I'd appreciate some help. But in case there is no solution we can add // ts-ignore.

Then "examples/**/*.js", can be permanently added to tsconfig.json.

[MoonE]

@tschaub I added "examples/**/*.js", " to the tsconfig.json, and explicitly excluded those that do not yet pass.

[jipexu]

Hi Great work, congratulations, but my knowledge doesn't allow me to understand the benefits of variable typing in examples. So, without understanding the benefits of this typing, I only see it as complicating the code and moving away from simple, basic JavaScript, which should remain so for our examples...???