launchdarkly-js-sdk-common

import { initialize, LDClient, LDOptions } from 'launchdarkly-js-sdk-common'; // This is an example of how a higher-level LaunchDarkly SDK (e.g., js-client-sdk) // might internally use launchdarkly-js-sdk-common to create a client instance. // Application code should *not* directly use this package. // Define a minimal "platform" object that provides environment-specific capabilities const browserPlatform = { // Example placeholder for browser-specific functions getCurrentUrl: () => typeof window !== 'undefined' ? window.location.href : 'about:blank', sendEvent: (event: any) => { console.log('Sending event (browser mock):', event); }, // ... other browser-specific implementations like localStorage, network requests, etc. }; // Define some basic SDK options const sdkOptions: LDOptions = { // A placeholder SDK key, in a real scenario this would come from env or config sdkKey: process.env.LAUNCHDARKLY_SDK_KEY ?? 'your-sdk-key', bootstrap: {}, // No initial flags for this example streaming: true, // More options as needed by the specific SDK }; let client: LDClient | undefined; try { // The 'initialize' function from common is called by specific SDKs // with their platform implementation to create the core client. client = initialize(sdkOptions, browserPlatform); client.on('ready', () => { console.log('LaunchDarkly common client is ready internally.'); const userContext = { kind: 'user', key: 'test-user-123' }; client?.identify(userContext); // Internal identify call // Simulate getting a flag value (would be done by the higher-level SDK) const flagValue = client?.variation('my-test-feature', false); console.log(`Internal variation for 'my-test-feature': ${flagValue}`); // Clean up client?.close(); }); client.on('failed', (err: any) => { console.error('LaunchDarkly common client failed to initialize:', err); }); console.log('Attempting to initialize LaunchDarkly common client...'); } catch (error) { console.error('Error during common client initialization:', error); }