Why does the enabled parameter in useQuery only accept "false"? (Why do "falsy" values pass through?)

[lgr-2024]

Describe the bug

FW : Vue (^3.5.13)

I attempted to control whether the query executes using the enabled option, as shown in the example below:

Your minimal, reproducible example

https://codesandbox.io/p/sandbox/distracted-antonelli-9dzdjl?file=%2Fsrc%2FExample.js%3A9%2C22

Steps to reproduce

enabled: computed(() => {
      return (
        !!wallet_address.value &&
        supportNetworks.value &&
        wrappingTokenList.value &&
        isWSReady.value
      )
    }),

Expected behavior

In this process, the values are, in order, true, undefined, undefined, and false, so the result of the && operator is undefined—a falsy value.

The problem is that when enabled is false, the query function does not execute, but when it is a falsy value like undefined, the query function erroneously executes.

At this point, I question the fundamental logical inconsistency of only preventing execution when enabled is exactly false, while allowing execution for other falsy values.

How often does this bug happen?

None

Screenshots or Videos

Platform

• OS: [e.g. Windows]
• Broswers: [e.g. Chrome]
• Version: [e.g. 91.1]

Tanstack Query adapter

None

TanStack Query version

v5.62.2

TypeScript version

No response

Additional context

No response

If there are cases where execution should occur even when the value is falsy, I would appreciate it if you could let me know.

Thank you.

[TkDodo]

because the default value is enabled: undefined, and we want to run the query in those cases. If I could go back in time, I would invert the setting and call it skip: boolean, so that you have to pass skip: true to skip running the query. Then, it could be a falsy value, too, because skip: undefined would be the default.

You might also want to have a look at the skipToken you can use instead of enabled: https://tanstack.com/query/latest/docs/framework/vue/guides/disabling-queries#typesafe-disabling-of-queries-using-skiptoken