#10751·query

`queryOptions` built via currying breaks SolidJS' Reactivity

Author: angeloananCreated May 22, 2026Updated Aug 29, 2026

Describe the bug

To my knowledge, useQuery is designed so that whenever a component gets mounted (whenever a query key has 1 or more dependent), their queryFn is run (assuming no disabled state / dependent queries, etc).

On SolidJS, creating a queryOption via function currying will result in weird reactivity issue and breaks rendering / hydation code (not sure; TypeError: template is not a function at getNextElement (solid-js_web.js?v=018b852a:792:10) at __root.tsx:57:3...).

One simple reproducible behavior is that query wont be run until you call query.data in a component's body or memoize query.isSuccess in a createMemo().

The following is a reproduction case:

import { queryOptions, useQuery } from "@tanstack/solid-query";
import { createFileRoute } from "@tanstack/solid-router";
import { Match, Switch } from "solid-js";

export const Route = createFileRoute("/")({
  component: RouteComponent,
});

export const fetchShellData = (slug: string) =>
  queryOptions({
    queryKey: ["shell-data", slug],
    queryFn: () => {
      return `ok: ${slug}`;
    },
  });

function RouteComponent() {
  const opt = fetchShellData("/");
  const q = useQuery(() => opt);

  return (
    <Switch>
      <Match when={q.isPending}>PENDING</Match>
      <Match when={q.isError}>ERROR</Match>
      <Match when={q.isSuccess}>Success: {q.data}</Match>
    </Switch>
  );
}

Your minimal, reproducible example

https://tangled.org/angelo.fyi/solid-tanplate/tree/solid-query-curry-reactivity

Steps to reproduce

Assuming you've cloned the repo above:

  1. Switch to solid-query-curry-reactivity branch
  2. pnpm install & pnpm dev
  3. Visit http://localhost:3000

Expected behavior

I expect that queries will be run automatically on component mount.

How often does this bug happen?

Every time

Screenshots or Videos

No response

Platform

  • OS: macOS Tahoe 26.4.1
  • Browser: Arc Browser - 148.0.7778.168 (Official Build) (arm64)

Tanstack Query adapter

solid-query

TanStack Query version

5.100.11

TypeScript version

4.3.0

Additional context

No response