feat: message banner (variants)

[nunogois]

• https://linear.app/unleash/issue/2-546/fetch-the-payload-from-a-real-feature-flag
• https://linear.app/unleash/issue/2-547/adapt-ui-to-use-the-feature-flag-information-were-fetching

Tackles the 2 tasks above.

Adapts our FlagResolver logic to support variants, so we can use them for our message banner project but also anything else in the future. Also adapts MessageBanner to the new logic.

• Add support for variants in FlagResolver;
• Adapt MessageBanner to a variants flag;
• Adds sticky support for the MessageBanner;
• Adds our first variants flag to uiConfig and experimental: messageBanner;
• Adds a variant-flag-schema to make it easy to represent the variant output that we specify in uiConfig;
• Adapts experimental to be able to represent default variants while still maintaining type safety;
• Adds helpers to make it easy to use variants in our project, such as getVariantValue and the useVariant hook;
• Adapts and adds new tests in flag-resolver.test.ts;

Notes

• The as PayloadType assertions need 3.20.0 unleash-client-node#454 since it includes fix: specify all payload types and export them unleash-client-node#452 (50ccf60);
• Enterprise needs a PR that will follow soon;

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
unleash-monorepo-frontend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 17, 2023 1:29pm

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
unleash-docs	⬜️ Ignored (Inspect)	Visit Preview		May 17, 2023 1:29pm

[gastonfournier]

LG!