@launchdarkly/js-sdk-common

What is @launchdarkly/js-sdk-common?

@launchdarkly/js-sdk-common is a JavaScript SDK for LaunchDarkly, a feature management platform. This package provides common functionality for LaunchDarkly's client-side and server-side SDKs, allowing developers to manage feature flags, user targeting, and A/B testing.

What are @launchdarkly/js-sdk-common's main functionalities?

Track custom events

{"client.track('custom-event-key', { customData: 'value' });":"Track custom events to gather analytics data. This can be useful for A/B testing and understanding user behavior."}

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README

LaunchDarkly SDK JavaScript Common Code

This project contains Typescript classes and interfaces that are applicable to client-side and server-side JavaScript SDKs.

This library is a beta version and should not be considered ready for production use while this message is visible.

Contributing

See Contributing.

About LaunchDarkly

• LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
  • Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
  • Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
  • Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
  • Grant access to certain features based on user attributes, like payment plan (eg: users on the ‘gold’ plan get access to more features than users in the ‘silver’ plan). Disable parts of your application to facilitate maintenance, without taking everything offline.
• LaunchDarkly provides feature flag SDKs for a wide variety of languages and technologies. Check out our documentation for a complete list.
• Explore LaunchDarkly
  • launchdarkly.com for more information
  • docs.launchdarkly.com for our documentation and SDK reference guides
  • apidocs.launchdarkly.com for our API documentation
  • blog.launchdarkly.com for the latest product updates