fix: bind setTimeout to globalThis in SupabaseBroadcastAdapter for browser compatibility

[jumski]

Fix setTimeout context binding issue in SupabaseBroadcastAdapter

This PR fixes a browser compatibility issue in the SupabaseBroadcastAdapter class where setTimeout was losing its context binding when used in browser environments. The issue would cause an error: "'setTimeout' called on an object that does not implement interface Window".

The fix:

• Properly binds setTimeout to the global context using setTimeout.bind(globalThis) in the constructor
• Adds comprehensive tests to verify the fix works correctly

This issue only manifested in browser environments, not in Node.js, which explains why our existing tests didn't catch it. I've added a test that simulates the browser's strict context requirements for setTimeout.

The PR also includes a planning document for implementing browser-based testing to catch similar issues in the future.

[changeset-bot]

🦋 Changeset detected

Latest commit: 2e8d068

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@pgflow/client	Patch
@pgflow/core	Patch
@pgflow/dsl	Patch
@pgflow/edge-worker	Patch
@pgflow/example-flows	Patch
pgflow	Patch

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[jumski]

• fix: bind setTimeout to globalThis in SupabaseBroadcastAdapter for browser compatibility #402 👈 (View in Graphite)
• main

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☁️ Nx Cloud last updated this comment at 2025-11-19 14:34:36 UTC

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• Branch: 11-19-fix_settimeout_binding_in_client
• Commit: 175d3165fb5f98b0a57b94d8286cfb65b042809a
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