migrate to ai-sdk v5

[eli-front]

WIP for #173

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[threepointone]

wow, exciting!

[threepointone]

I wonder if we should publish a version with both inside it for a while. so workers-ai-provider still for <=v4, and workers-ai-provider/v5 for v5. eventually we can deprecate the core one, and in a major release flip it so v5 becomes the default. what do you think?

[Dhravya]

I agree here. I think the ai gateway provider also would need an upgrade. It works with LanguageModelV1, which does break with upgraded packages

[Dhravya]

I think merging this would be harder than to send another PR? Wdyt @threepointone

❯ git pull origin main
From https://github.com/cloudflare/ai
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CONFLICT (content): Merge conflict in packages/workers-ai-provider/src/workersai-chat-language-model.ts
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Automatic merge failed; fix conflicts and then commit the result.

[eli-front]

There's definitely a lot left to do here and I don't have a lot of capacity

[harrismcc]

Is this something that is still being worked on? I would love to be able to upgrade to V5 but this is a blocker.

[threepointone]

should be released today/tomorrow #269