Preview Indicator

[piotrzaborow]

Feature request

Is your feature request related to a problem? Please describe.

I love new preview mode available in Next.js, but still there is one problem. No indication whenever user is in this mode. This has to be applied with a custom code, with a hassle of HOC added to all pages.

Describe the solution you'd like

Default preview indicator should come with Next.js and be available in development and production environments. This can be just a simple bar positioned on top with text 'preview mode' and simple button for exiting.

I did some PoC for it with HoC so maybe it can be applicable by default for pages.