feature-flag-manager

Feature flags enable controlled rollouts and A/B testing by gating functionality behind flag evaluations. You create flags in LaunchDarkly or a local JSON configuration, then wrap UI components and server actions with flag checks to gradually release features to users or run targeted experiments without redeploying code.

Yes, feature flags apply to both UI components and server actions. The Skill provides hooks and providers to evaluate flags in React, plus integration points for server-side logic, supporting multivariate, percentage-based, and user-targeted flag types across your full stack.

Feature flags support Boolean flags for simple on/off control, percentage-based rollouts for gradual user distribution, user targeting for specific audiences, and multivariate flags for A/B testing multiple variants. LaunchDarkly and JSON-based configurations both provide these evaluation strategies.

Set up involves configuring your flag provider—either connecting to LaunchDarkly or defining flags in JSON—then initializing the flag provider and hooks in your application. The Skill encapsulates provider setup and flag evaluation, handling environment overrides and enabling you to gate components by flag status.

Progressive rollouts use percentage-based flags to gradually increase user exposure over time; canary releases gate new features to a small subset first before wider rollout. Both rely on flag evaluation to control which users see new functionality without code redeployment.

Yes, the Skill supports environment overrides, allowing you to configure flag behavior differently across development, staging, and production environments while using the same flag definitions.