Nuxt: Updating AI SDK from 3.0.19 to later causes error in useChat

[dosstx]

Description

Nuxt app works fine with ai@3.0.19 . However, updating to latest AI SDK causes the following browser error (shown via the onError callback in useChat):

Error

Failed to parse stream string. Invalid code

Reverting to ai@3.0.19 is the last version that works before the above error begins to show starting at version 3.0.20.

Code example

const {
	messages,
	input,
	handleSubmit,
	setMessages,
	reload,
	isLoading,
	stop,
	append
} = useChat({
	api: config.public.chatUrl,
	headers: { "Content-Type": "application/json" },
	body: agent,
	onError: (error) => {
		isLoading.value = false
		console.log("onError from useChat: ", error)
		errorMessage.value = error
	}
})

Additional context

---

• Operating System: Windows_NT
• Node Version: v18.18.0
• Nuxt Version: 3.11.2
• CLI Version: 3.11.1
• Nitro Version: 2.9.6
• Package Manager: npm@9.8.1
• Builder: -
• User Config: routeRules, devtools, nitro, modules, eslint, runtimeConfig, vuefire, image
• Runtime Modules: @nuxt/ui@2.15.2, @nuxt/image@1.5.0, @pinia/nuxt@0.5.1, @pinia-plugin-persistedstate/nuxt@1.2.0, nuxt-vuefire@1.0.2, @vueuse/nuxt@10.9.0, @nuxt/eslint@0.3.6, @nuxt/content@2.12.1, @nuxt/fonts@0.6.1
• Build Modules: -

---

[lgrammel]

Duplicate of #1316

See #1316 (comment) for upgrade instructions.