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launchdarkly-js-sdk-common

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launchdarkly-js-sdk-common

LaunchDarkly SDK for JavaScript - common code

  • 5.4.0
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  • npm
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What is launchdarkly-js-sdk-common?

The launchdarkly-js-sdk-common package is a JavaScript SDK for LaunchDarkly, a feature management platform that allows developers to control the release of features to users. This SDK provides the core functionality for interacting with LaunchDarkly's feature flagging and experimentation capabilities.

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

Initialize the SDK

This feature allows you to initialize the LaunchDarkly client with your environment key and user information. The client can then be used to interact with LaunchDarkly's feature flags.

const { initialize } = require('launchdarkly-js-sdk-common');
const client = initialize('YOUR_ENVIRONMENT_KEY', { key: 'user_key' });

Evaluate Feature Flags

Once the client is ready, you can evaluate feature flags using the `variation` method. This method takes the feature flag key and a default value, returning the flag's value for the user.

client.on('ready', () => {
  const showFeature = client.variation('your-feature-flag-key', false);
  console.log('Feature flag value:', showFeature);
});

Track Custom Events

This feature allows you to track custom events in LaunchDarkly. You can send event data that can be used for analytics and experimentation purposes.

client.track('custom-event-key', { customData: 'value' });

Close the Client

This feature allows you to close the LaunchDarkly client, ensuring that all pending events are sent before the application exits.

client.close();

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Package last updated on 18 Oct 2024

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