We recently introduced a new Flags SDK that allows using feature flags, in Next.js and SvelteKit, and works with any feature flag provider—or when using no flag provider at all. It's not meant to be a competitor to other feature flag providers. Instead, it’s a tool that sits between your application and the source of your flags, helping you follow best practices for using feature flags and experiments, keeping your website fast.
Follow along below to get started with the Flags SDK, beginning with a simple feature flag to more sophisticated cases, discussing tradeoffs along the way.