Can't parse `.tsx` files when placed last in the plugin list

[xavdid]

I wrote this whole thing only to realize the order of the plugins matters: swapping preact to the start of the list cleared everything up. So I'll leave it up as a possible improvement for the docs / other searchers, but there's probably not much action needed on your part.

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After adding the preact plugin to my eslint config, I started getting parser erorrs on .tsx files. I followed the super basic setup from tseslint, plus your readme:

// eslint.config.ts

import js from "@eslint/js";
import { defineConfig } from "eslint/config";
import tseslint from "typescript-eslint";
import preact from 'eslint-config-preact';

export default defineConfig([
  js.configs.recommended,
  tseslint.configs.recommended,
  ...preact 
]);

I've got a pretty standard .tsx file:

import { useState } from "preact/hooks";

const GRAPH: Record<string, Record<string, number>> = {};

export const Calculator = () => {
  const [nodes, setNodes] = useState<string[]>([]);

  return <p>cool</p>
};

Then, when running eslint, I get:

  4:11  error  Parsing error: Missing initializer in const declaration. (4:11)

I believe the plugin is this is caused by using the estree for TS files, which means typescript syntax fails to parse. It can't handle type declarations.

Versions

• eslint @ v9.34.0
• eslint-config-preact @ 2.0.0
• eslint-config-preact @ 8.42.0
• @eslint/js @ 9.34.0
• node @ 22.19.0