vercel
Provider APIs (`doStream`, et al.) are not usable outside of AI SDK
Description
The Provider APIs doStream and doGenerate are publicly exported, but not genuinely usable without extracting functionality from the AI SDK that is not exported.
These APIs take a prompt parameter defined here:
https://github.com/vercel/ai/blob/3db90c3d44b5e4de6c7414bd6a970d166356ba94/packages/provider/src/language-model/v1/language-model-v1-prompt.ts#L1-L12
As the comment observes, "This is not a user-facing prompt." Indeed. Generating valid instances of this type from CoreMessage is performed in multiple steps using non-public functions. Here in streamText, the getValidatedPrompt and convertToLanguageModelPrompt functions are private to the core package:
https://github.com/vercel/ai/blob/3db90c3d44b5e4de6c7414bd6a970d166356ba94/packages/core/core/generate-text/stream-text.ts#L146-L159
Likewise in the definitions for generateText, generateObject, streamObject, and streamUI.
Code example
n/a
Additional context
No response
