Create Next.js template or example

[kamranayub]

• Formalize this from discussion, into new official repo
• Add to templates and documentation

Here's an example of using Excalibur with Next. Since Excalibur can only execute on the client, it needs to be loaded via useEffect and a dynamic import otherwise Next will attempt to run the module in SSR. Unfortunately, right now we don't check for window existence so it bombs in SSR.

https://codesandbox.io/s/next-excalibur-5b18x?file=/game/game.js

FYI, this is still an issue in 0.24.5 which is exacerbated by HMR: #1431

Working around by clearing the element by tag name/query selector when effect runs.

Originally posted by @kamranayub in #1886 (comment)

[eonarheim]

Should this issue be restructured to gracefully fail if no window is present?

[kamranayub]

Well I think we'd still like a template or example, and then the other issue is failing gracefully with no window

[github-actions]

This issue hasn't had any recent activity lately and is being marked as stale automatically.

[github-actions]

This issue hasn't had any recent activity lately and is being marked as stale automatically.