Nuxt · NUXT0060
useState values must be serializable
Report unsupported live values stored in Nuxt payload state.
nuxt/state/no-nonserializable-usestatesrc/rule-packs/nuxt/rules/nuxt/no-non-serializable-use-state.ts Upstream docs Run this rule
pnpm nuxt doctor --rules nuxt/state/no-nonserializable-usestate
Why it matters
Nuxt serializes payload state with devalue, which supports Map, Set, Date, and RegExp values. Functions and live sockets cannot be transferred to the client as payload state.
Recommended fix
Use values supported by Nuxt's payload serializer, or keep live resources outside payload state.
Useful links
Example
Keep useState serializable
Before
const socket = useState('socket', () => new WebSocket('wss://example.com'))
After
const socketUrl = useState('socket-url', () => 'wss://example.com')