[joker23]

Summary

• Makes the Vue and React Native contract-test WebSockets thin subclasses of the shared base. This removes their duplicated dispatch loops.
• Adds optional capabilities and onConnectionChange options to the shared base. Defaults keep the browser and React behavior unchanged.
• The base now stops reconnecting after disconnect(). React Native already did this. The browser and React entities gain it.

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Note

Overview
Vue and React Native contract-test harness WebSockets are refactored to extend the shared TestHarnessWebSocket base (like browser/React), deleting their local connect/reconnect, message dispatch, and capability handling. Each SDK subclass only supplies its capability list and implements createClient / getCommandHandler / deleteClient against local ClientEntity instances.

The shared base gains an optional onConnectionChange hook (used by React Native’s constructor) and exports TestHarnessWebSocketOptions. Reconnect behavior is aligned so disconnect() sets intentional close and pending reconnect timers are skipped—matching what React Native already did and what browser/React entities pick up via the base.

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[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 34404 bytes
Compressed size limit: 35000
Uncompressed size: 122974 bytes

[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 32220 bytes
Compressed size limit: 32500
Uncompressed size: 152548 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26066 bytes
Compressed size limit: 44000
Uncompressed size: 168326 bytes

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.