Live Refactor WebSocket

[dlarocque]

Refactor WebSocketHandler to remove separate implementations for each platform. I was able to refactor this in a way so that there are no difference in the code that is used in Node and Browser.

The tests now stub WebSocket on globalThis instead of on 'window', which allows us to stub it out on Node too! Disappointed I didn't discover this earlier. Now that we can stub the global WebSocket in Node, we don't need the 'ws' dependency for the test ws server!

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Latest commit: 41d8ae0

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[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/ai

  Type	Base (a38b5fd)	Merge (bf32ffa)	Diff
  browser	47.2 kB	47.2 kB	-21 B (-0.0%)
  main	50.6 kB	50.6 kB	-21 B (-0.0%)
  module	47.2 kB	47.2 kB	-21 B (-0.0%)

• firebase

  Type	Base (a38b5fd)	Merge (bf32ffa)	Diff
  firebase-ai.js	37.3 kB	37.3 kB	-13 B (-0.0%)

Test Logs

• Base (a38b5fd): https://github.com/firebase/firebase-js-sdk/actions/runs/17044803436
• Merge (bf32ffa): https://github.com/firebase/firebase-js-sdk/actions/runs/17076892386

1. https://storage.googleapis.com/firebase-sdk-metric-reports/zVOLOItaqD.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

• @firebase/ai

  • getLiveGenerativeModel

    Size

    Type	Base (a38b5fd)	Merge (bf32ffa)	Diff
    size	10.8 kB	10.9 kB	+18 B (+0.2%)
    size-with-ext-deps	28.5 kB	28.5 kB	+16 B (+0.1%)

    Dependency

    Type	Base (a38b5fd)	Merge (bf32ffa)	Diff
    functions	assignRoleToPartsAndValidateSendMessageRequest createWebSocketHandler decodeInstanceIdentifier formatNewContent formatSystemInstruction getLiveGenerativeModel registerAI	assignRoleToPartsAndValidateSendMessageRequest decodeInstanceIdentifier formatNewContent formatSystemInstruction getLiveGenerativeModel registerAI	- createWebSocketHandler
    classes	AIError AIModel AIService Backend BrowserWebSocketHandler GoogleAIBackend LiveGenerativeModel LiveSession VertexAIBackend WebSocketUrl	AIError AIModel AIService Backend GoogleAIBackend LiveGenerativeModel LiveSession VertexAIBackend WebSocketHandlerImpl WebSocketUrl	+ WebSocketHandlerImpl - BrowserWebSocketHandler

Test Logs

• Base (a38b5fd): https://github.com/firebase/firebase-js-sdk/actions/runs/17044803436
• Merge (bf32ffa): https://github.com/firebase/firebase-js-sdk/actions/runs/17076892386

1. https://storage.googleapis.com/firebase-sdk-metric-reports/uYdBiuHffm.html