chore: migrate to eslint flat config

Author: mrkvon

eslint.config.mjs

@@ -1,23 +1,18 @@
 import eslint from '@eslint/js'
-import tsParser from '@typescript-eslint/parser'
 import eslintConfigPrettier from 'eslint-config-prettier/flat'
 import { defineConfig } from 'eslint/config'
 import globals from 'globals'
 import tseslint from 'typescript-eslint'
 
 export default defineConfig(
+  { ignores: ['dist', 'apidocs', 'vitest.config.ts', 'eslint.config.mjs'] },
   eslint.configs.recommended,
   tseslint.configs.recommended,
   eslintConfigPrettier,
-  { ignores: ['dist', 'apidocs', 'vitest.config.ts'] },
   {
     languageOptions: {
       globals: { ...globals.node },
-      parser: tsParser,
-      ecmaVersion: 9,
-      parserOptions: {
-        project: './tsconfig.json',
-      },
+      parserOptions: { project: './tsconfig.json' },
     },
     rules: {
       '@typescript-eslint/no-unused-vars': [

package.json

@@ -19,7 +19,6 @@
     "@eslint/js": "^9.39.2",
     "@solid/community-server": "^7.0.2",
     "@types/maildev": "^0.0.7",
-    "@typescript-eslint/parser": "^8.54.0",
     "cheerio": "^1.0.0-rc.12",
     "cross-fetch": "^4.0.0",
     "eslint": "^9.39.2",

tsconfig.json

@@ -18,5 +18,5 @@
     "lib": ["ESNext"],
     "types": ["node"]
   },
-  "include": ["./src", "eslint.config.mjs"]
+  "include": ["./src"]
 }

yarn.lock

@@ -3402,7 +3402,7 @@
     natural-compare "^1.4.0"
     ts-api-utils "^2.4.0"
 
-"@typescript-eslint/parser@8.54.0", "@typescript-eslint/parser@^8.54.0":
+"@typescript-eslint/parser@8.54.0":
   version "8.54.0"
   resolved "https://registry.npmjs.org/@typescript-eslint/parser/-/parser-8.54.0.tgz#3d01a6f54ed247deb9982621f70e7abf1810bd97"
   integrity sha512-BtE0k6cjwjLZoZixN0t5AKP0kSzlGu7FctRXYuPAm//aaiZhmfq1JwdYpYr1brzEspYyFeF+8XF5j2VK6oalrA==