`no-unassigned-vars` (ESLint 10 recommended) flags variables used as `ref={el}`

[dex157]

Describe the bug

ESLint 10's recommended no-unassigned-vars flags Solid refs. For let el; <div ref={el} />, the compiler assigns el, but ESLint only sees a read.

To Reproduce

export const Box = () => {
  let el!: HTMLDivElement;
  return <div ref={el} onClick={() => el.focus()} />;
};

Config: [js.configs.recommended, ...tseslint.configs.recommended, solid], where solid is eslint-plugin-solid/configs/v2.

2:7  error  'el' is always 'undefined' because it's never assigned  no-unassigned-vars

Expected behavior

No report for a variable used as ref={…}.

Environment (please complete the following information):

• OS: macOS
• Node version: v24.19.0
• eslint-plugin-solid version: 0.18.0
• eslint version: 10.11.0

Additional context

ESLint has no "mark as written" API, so there are two fixes. One is a solid/no-unassigned-vars wrapper that drops reports for ref targets, which is what I'd prefer. The other is turning the core rule off in the configs.

• I would be willing to contribute a PR to fix this issue