TanStack / TanStack/query

Angular: no type narrowing on infinite query status

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#8,984 2 comments 1 reaction 1 assignee View on GitHub

@arnoud-dv is already working on this.

Since Sep 24, 2025.

package: angular-query-experimental types
Dominant language
TypeScript
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Description

Describe the bug

injectQuery and injectMutation support type narrowing via the is* status signals.

This was not implemented for injectInfiniteQuery

Your minimal, reproducible example

https://www.typescriptlang.org/play/?#code/JYWwDg9gTgLgBAbwFBzsAdgKwKYGMYCKArtlAJ4A0KaWeMAkugGYbAzbGmVIC+cTUCCDgAiAAIwAhugDOU3AGsA9NIDmRADaSoAWgCOJcjuwAPMKVDZ0UjSIDcSUJFiI4RGdkYt0bDobJwfAJCohLScpKKSlDYkTD6-vZISLgQsvBqmtqc5HAAvDQ4+DlkABSlAJT5AHxwpcioBlwA0thkAFxwANoi7HIiALpUjf4AYuidlTVwAAqCIMAeAHQxMhAaAG7YpQCsFVQ8FRUOjkx1mVpQJUuLAMpEuLjYMjKVVQ1wSkpwgKDkcJJMdhQOC4AAWeAUGFUaBk90ezxkcAAJpIpHB0BB4JAXsAAEYaAJEdBI7DebBI1DUVLpZGoyT5f7odSXa4oqSVByoL6oVAAPQA-LxktS5IzmdovKx2CUGRgigxmFK-FxylU8rV6tQmuRWh1uiIwIJ5TJBsM4NqyONJgg4GBJKpsDNtJJhIdph9UDEYEQoOhZvNFtgVs91ltdsdqDwzVLgJINE6HU6oC7OgAmM0OmBzbAbYAQdwJx3OkCTFhQOSFtW1ACMGewMAAcqYs-ai8mS3UtBXW1W4ABmA5HE7AM6lC4SxU+aX+G6wh5PF5vRDUbmAGXJ-oDSCDwYooTC4QvEWz6XJgBoNLaIDj8YTiaSMOSqWlRceGeOoJKp8ryEtjxyV98PICk+NJ2g6iIFMeSxgc8nKfIBfKCjwwrPvAMRxJ+vgygU7ieJOWH+JqIwtG0nQ9IaEDGqaWpjBMdQ2jBSYuoEvYenAXo+n6cxCIGwZrJs2x7HBUbUDGcaFkxHbptQmbZrm+YyBJxalsA5Ytg6va1jJ9ZNiY6ltimnaSN2GnTAOvARqcdTofgmHTlws4Hgi7wAb8G5AtuEJ7nc84IrSaIYliV4yHiBJuHeZIUnAIEvnSDI2Qq3gEQ5x5wdyQGCqgIpYq2EH+ZI0G5WlCFwMByFAA

Steps to reproduce

On linked TS playground:

const infiniteQuery = injectInfiniteQuery(() => ({
  queryKey: ["projects"],
  queryFn: ({ pageParam }) => {
    return Promise.resolve(5);
  },
  initialPageParam: 2,
  getPreviousPageParam: (firstPage) => 1,
  getNextPageParam: (lastPage) => 3,
}));

if (infiniteQuery.isSuccess()) {
  // ❌ after checking isSuccess data signal still possibly undefined
  const data = infiniteQuery.data();
}
Expected behavior

Type narrowing should work for infinite queries on Angular too

How often does this bug happen?

None

Screenshots or Videos

No response

Platform

N/A

Tanstack Query adapter

angular-query

TanStack Query version

v5.72.3

TypeScript version

No response

Additional context

No response

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Assessment

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