FeatBit JavaScript Client SDK

When to Use This Skill

Use for browser-based JavaScript and TypeScript applications that evaluate feature flags client-side — vanilla JS apps, SPAs, or any non-React framework. For React, use featbit-sdks-react instead.

Why client-side SDK: designed for single-user browser contexts, stores flag data in localStorage, and syncs via WebSocket streaming or HTTP polling. Do not use for Node.js server-side applications — those require featbit-sdks-node.

Source

https://github.com/featbit/featbit-js-client-sdk

Setup Workflow

Copy and track progress:

• Step 1: Install the package
• Step 2: Build the browser client with a user
• Step 3: Wait for readiness and evaluate the first feature flag
• Step 4: If events or user switching are needed, read the specific README section