Docs/Vue.js/Vue CLI: Make it clear in the guide that using babel polyfills kills the performance

[oleq]

A follow-up of ckeditor/ckeditor5-vue#124.

In the discussion in the above issue, I found out that Vue CLI uses lots of (Babel) polyfills when building for production and that:

• increases the bundle size,
• dramatically impacts the already–not–so–perfect performance of the editor.

We need to clearly state in the guide that for the best performance, the build should be created using the --modern flag of Vue CLI.

[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may still be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.

[CKEditorBot]

There has been no activity on this issue for the past year. We've marked it as stale and will close it in 30 days. We understand it may still be relevant, so if you're interested in the solution, leave a comment or reaction under this issue.