Feature Flags

Feature flags, also known as feature toggles, are a software development technique that allows developers to enable or disable functionality in their application without having to redeploy the code. Feature flags can be used for A/B testing and gradual rollouts, as a personalization feature or simply as a kill switch to quickly turn off certain features that cause bugs in production.

interface IFeatureFlag {
  key: string
  is_persist: boolean
  value: string | boolean
  payload: string
}

const tracker = new Tracker({
	projectKey: 'your. project key',
	// the rest of your tracker options
	flags: {
		onFlagsLoad: (flags: IFeatureFlag[]) => {
			// handle active flags
		},
	}
})

• tracker.clearPersistFlags() - Removes persistent Feature Flags from browser’s sessionStorage.
• tracker.reloadFlags(): Promise<void> - Reloads all flags (can be useful if user session had any change of metadata, userId or any other information that could be required for certain flag conditions).
• tracker.getFeatureFlag(flagKey: string): Returns a IFeatureFlag by key if eixsts.
• tracker.getAllFeatureFlags(): Returns all flags (IFeatureFlag[]) that are active right now.
• tracker.isFlagEnabled(flagKey: string): Returns true if flag with this key does exist and is active.
• tracker.onFlagsLoad(callback): Sets the callback to use when Feature Flags are loaded.