fix(wand): nodejs streaming

[Sg312]

Summary

Switches streaming approach

Type of Change

• Bug fix

Testing

Local testing

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
sim	Building	Preview	Comment	Aug 29, 2025 10:47pm

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
docs	Skipped			Aug 29, 2025 10:47pm

[greptile-apps]

Greptile Summary

This PR addresses runtime compatibility issues in the wand-generate API endpoint by switching from the Edge Runtime to Node.js runtime. The wand-generate endpoint appears to be responsible for AI-powered content generation, likely using GPT-4 models through OpenAI or Azure OpenAI services.

The main changes include:

1. Runtime Change: Modified the export from runtime = 'edge' to runtime = 'nodejs' to leverage Node.js streaming capabilities and avoid Edge Runtime limitations
2. Timeout Removal: Eliminated AbortController-based timeout mechanisms that were causing compatibility issues in the edge environment
3. Enhanced Error Handling: Added a safeStringify helper function to handle complex error objects that may not serialize properly with standard JSON.stringify
4. Streaming Improvements: Added 'Transfer-Encoding': 'chunked' header to ensure proper streaming behavior in the Node.js runtime
5. Better Logging: Enhanced error logging to provide more detailed information when requests fail

This change integrates with Sim's AI workflow system, where the wand feature likely provides intelligent content generation or suggestions within the platform's block-based workflow builder. The switch to Node.js runtime should resolve streaming and timeout issues that users may have experienced when using AI generation features.

PR Description Notes:

• The PR template is incomplete with no specific description, issue reference, testing information, or checklist completion
• Missing details about what specific issues this fixes or how it was tested

Confidence score: 3/5

• This PR addresses a specific runtime compatibility issue but removes important timeout protection without replacement
• Score reflects the runtime change being beneficial while timeout removal introduces potential hanging request risks
• Pay close attention to the timeout mechanism removal and ensure proper request cancellation is still possible

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