Proper way of typing
Whats the proper way of typing this?
nuxtApp.payload.serverState = {
isAndroid,
isTWA,
approximateWidth,
isLoadingRedirect,
isInAppBrowser,
} ?
Type casting it using
nuxtApp.payload.serverState = {
isAndroid,
isTWA,
approximateWidth,
isLoadingRedirect,
isInAppBrowser,
} as MyServerState;
Seems to work in my editor, but when runing nuxi typecheck it will still flag as a type error:
error TS2339: Property 'approximateWidth' does not exist on type '{}'.
2 Replies
Hi @el maco. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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The knowledge sources do not provide explicit documentation on how to type or extend the shape of nuxtApp.payload.serverState. The official docs describe the payload object and its keys (like data and state), but do not mention a serverState property or how to type it or extend its interface. They do show that payload is an object with certain expected keys, and that you can use advanced types with payload data, but there is no guidance on augmenting its type or safely assigning custom properties to it.
Type casting with as MyServerState may silence TypeScript in your editor, but if the underlying type definition for payload.serverState does not include your custom properties, nuxi typecheck (which uses vue-tsc) will still flag this as an error. This is because type assertions do not change the actual type of the object—they only tell TypeScript to treat it as a certain type, which can be unsafe if the structure does not match.
If you need to extend types for Nuxt internals (like payload), the usual approach is to use module augmentation, but the knowledge sources do not show an example for payload or serverState. They do show how to augment types for app config, runtime config, and page meta, but not for payload or its sub-properties Typing App Config, Typing Runtime Config, Typing Custom Metadata.
Summary:
I'm sorry, but the knowledge sources do not contain enough information to answer how to properly type or extend nuxtApp.payload.serverState. Type casting with as MyServerState may work in the editor but will not resolve type errors during strict type checking if the underlying types are not augmented accordingly. If you need to ensure type safety, you may need to look for or request official guidance on extending Nuxt's payload types. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
I'm sorry, but the knowledge sources do not contain enough information to answer how to properly type or extend nuxtApp.payload.serverState. Type casting with as MyServerState may work in the editor but will not resolve type errors during strict type checking if the underlying types are not augmented accordingly. If you need to ensure type safety, you may need to look for or request official guidance on extending Nuxt's payload types. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
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