Targeting by User

This demo is easiest to understand if you open its source code in a parallel tab.

Source code

This demo shows how to use @happykit/flags for targeting users.

HappyKit allows you to do pass in a user. You can use that user and the provided uesr profile for rules or percentage-based rollouts. The fields supported in the user profile are defined in the README and in the TypeScript types.

Render #2 (Current render)
{ flags: {}, data: null, error: "response-not-ok", fetching: true, settled: true, visitorKey: "lVoWajY8ihWXqC2rGkjII" }
History (1)
Previous return values of the useFlags() hook.
Render #1
{ flags: {}, data: null, error: "response-not-ok", fetching: false, settled: true, visitorKey: "lVoWajY8ihWXqC2rGkjII" }

Note that aside from users, HappyKit also has the concepts of a visitor and traits. These three concepts are all independent of each other.


Performance
No feature flags loaded by the browser so far.