tanstack-ai-migration

# Migrating to TanStack AI Two different jobs. Pick the one that matches the code in front of you. ## Coming from another SDK The name-by-name mapping lives in the docs, and it is longer than any summary that fits here: https://tanstack.com/ai/latest/docs/migration/migration-from-vercel-ai The shape of the change: - `streamText` and `generateText` become one `chat()` call with a streaming option. - `createOpenAI(...)` becomes a tree-shakeable adapter, such as `openaiText()` from `@tanstack/ai-openai`. - `onFinish` and friends become middleware hooks. - Manual SSE wiring becomes the built-in response helpers. - `generateObject` becomes structured outputs on `chat()`. Read the guide, then load the target API's own skill with `npx @tanstack/intent@latest load @tanstack/ai#ai-core`. Do not port from memory: a half-remembered mapping produces code that type-checks in neither SDK. ## Upgrading TanStack AI itself Start with the version the app has, and the current release: ```bash node -p "require('@tanstack/ai/package.json').version" npm view @tanstack/ai version ``` Then read the guides for what changed: - https://tanstack.com/ai/latest/docs/migration/migration - https://tanstack.com/ai/latest/docs/migration/ag-ui-compliance - https://tanstack.com/ai/latest/docs/migration/sampling-options-to-model-options - https://tanstack.com/ai/latest/docs/migration/create-ui Deprecated APIs keep working, so upgrade in steps rather than rewriting everything at once. ## Codemods Some renames have a jscodeshift transform. Run it straight from the repo, and preview first with `--dry --print`: ```bash npx jscodeshift \ -t https://raw.githubusercontent.com/TanStack/ai/main/codemods/ag-ui-compliance/transform.ts \ --dry --print src/ ``` Each guide names the codemod that covers it, and what the codemod cannot reach. Server-side rewrites are usually manual. ## After the port Run the project's type checker. Most errors after a migration come from an API that was remembered rather than read, so check the failing name against `node_modules/@tanstack/ai/src/` before changing it again.