ESLint error onSuccess callback: Promise-returning function provided to property where a void return was expected

[tgdn]

Describe the bug

Following this article, I'm returning a promise in the onSuccess callback. Since the callback signature should return void, it cannot return a promise and causes the following ESLint error.

Promise-returning function provided to property where a void return was expected

Steps to reproduce

Return a promise from a within the onSuccess callback.

Expected behavior

I should be able to return a promise from within the onSuccess callback.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

• OS: macOS
• Browser: Chrome

Tanstack Query adapter

react-query

TanStack Query version

v5.35.5

TypeScript version

v5.4.5

Additional context

No response