eslint.config.js

import js from "@eslint/js";
import tseslint from "typescript-eslint";
import eslintPluginSvelte from "eslint-plugin-svelte";
import eslintConfigPrettier from "eslint-config-prettier";
import globals from "globals";
import svelteParser from "svelte-eslint-parser";

export default tseslint.config(
  js.configs.recommended,
  ...tseslint.configs.recommended,
  ...eslintPluginSvelte.configs["flat/recommended"],
  eslintConfigPrettier,
  ...eslintPluginSvelte.configs["flat/prettier"],
  {
    files: ["**/*.svelte"],
    languageOptions: {
      ecmaVersion: "latest",
      sourceType: "module",
      globals: { ...globals.node, ...globals.browser },
      parser: svelteParser,
      parserOptions: {
        parser: tseslint.parser,
        extraFileExtensions: [".svelte"],
      },
    },
  },
  {
    files: ["**/*.ts"],
    languageOptions: {
      ecmaVersion: "latest",
      sourceType: "module",
      parser: tseslint.parser,
      parserOptions: {
        project: "./tsconfig.json",
      },
    },
    rules: {
      "@typescript-eslint/no-unused-vars": [
        "error",
        {
          args: "all",
          argsIgnorePattern: "^_",
          caughtErrors: "all",
          caughtErrorsIgnorePattern: "^_",
          destructuredArrayIgnorePattern: "^_",
          varsIgnorePattern: "^_",
          ignoreRestSiblings: true,
        },
      ],
      "no-console": "error",
    },
  },
);