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Complete AI SDK 5 migration #46

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Complete AI SDK 5 migration #46

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@Devesh36
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@Devesh36 Devesh36 commented Nov 3, 2025

AI SDK 5 Migration

This PR completes the migration from AI SDK v4 to v5, addressing all 50+ TypeScript errors.

Changes:

  • ✅ Updated dependencies to v5 versions
  • ✅ Refactored message structure (content → parts array)
  • ✅ Updated tool definitions (parameters → inputSchema)
  • ✅ Fixed streaming API (DataStreamWriter → UIMessageStreamWriter)
  • ✅ Updated component types (Message → UIMessage)
  • ✅ Converted attachment handling (experimental_attachments → parts)
  • ✅ Fixed tool state names (call → input-available)

Breaking Changes Addressed:

  • Message.content replaced with Message.parts array
  • Tool state machine redesigned with new state names
  • Streaming API completely rewritten
  • Attachment handling migrated to parts array

Testing:

  • All TypeScript compilation errors resolved
  • Components updated to work with new structure
  • API route refactored for v5 streaming

@Devesh36
chore: migrate AI SDK from v4 to v5
ebfa9dc 
- Update ai package: 4.1.17 → 5.0.0
- Update @ai-sdk/openai: 1.1.12 → 2.0.0
- Update @ai-sdk/anthropic: 1.1.8 → 2.0.0
- Update zod: 3.23.8 → 4.1.8
- Refactor message structure: content → parts array
- Update tool state names: call → input-available
- Convert streaming API to v5 (createUIMessageStreamResponse removed)
- Update dataStream API: writeData → write, parameters → inputSchema
- Fix components to work with new UIMessage structure with parts array
- Add ai-legacy npm alias for compatibility layer
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vercel bot commented Nov 3, 2025

@Devesh36 is attempting to deploy a commit to the tscircuit Team on Vercel.

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rushabhcodes
rushabhcodes reviewed Nov 3, 2025
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Confirm that no breaking changes in request/response structure

rushabhcodes
rushabhcodes approved these changes Nov 3, 2025
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LGTM!

nailoo
nailoo reviewed Nov 3, 2025
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@seveibar
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seveibar commented Nov 4, 2025

Hey guys i appreciate you digging into this, but we don't have the bandwidth to maintain chat.tscircuit.com right now

nailoo
nailoo approved these changes Nov 4, 2025
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LGTM!

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@rushabhcodes rushabhcodes rushabhcodes approved these changes

@nailoo nailoo nailoo approved these changes

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@Devesh36 @seveibar @rushabhcodes @nailoo