chore: 🔧 migrate eslint config to flat config file

eslint.config.mjs

@@ -0,0 +1,71 @@
+import typescriptEslint from '@typescript-eslint/eslint-plugin'
+import jest from 'eslint-plugin-jest'
+import simpleImportSort from 'eslint-plugin-simple-import-sort'
+import globals from 'globals'
+import tsParser from '@typescript-eslint/parser'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import js from '@eslint/js'
+import { FlatCompat } from '@eslint/eslintrc'
+import { includeIgnoreFile } from '@eslint/compat'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+const compat = new FlatCompat({
+	baseDirectory: __dirname,
+	recommendedConfig: js.configs.recommended,
+	allConfig: js.configs.all
+})
+const gitignorePath = path.resolve(__dirname, '.gitignore')
+
+export default [
+	...compat.extends('eslint:recommended', 'plugin:@typescript-eslint/recommended', 'prettier'),
+	includeIgnoreFile(gitignorePath),
+	{
+		ignores: ['dist/']
+	},
+	{
+		plugins: {
+			'@typescript-eslint': typescriptEslint,
+			jest,
+			'simple-import-sort': simpleImportSort
+		},
+
+		languageOptions: {
+			globals: {
+				...globals.node,
+				...jest.environments.globals.globals
+			},
+
+			parser: tsParser,
+			ecmaVersion: 2021,
+			sourceType: 'module'
+		}
+	},
+	{
+		files: ['**/*.js', '**/*.jsx', '**/*.ts', '**/*.tsx'],
+
+		rules: {
+			'simple-import-sort/imports': [
+				'error',
+				{
+					groups: [
+						// Packages `react` related packages come first.
+						['^react', '^@?\\w'],
+						// Internal packages.
+						['^(@|components)(/.*|$)'],
+						// Side effect imports.
+						['^\\u0000'],
+						// Parent imports. Put `..` last.
+						['^\\.\\.(?!/?$)', '^\\.\\./?$'],
+						// Other relative imports. Put same-folder imports and `.` last.
+						['^\\./(?=.*/)(?!/?$)', '^\\.(?!/?$)', '^\\./?$'],
+						// Style imports.
+						['^.+\\.?(css)$']
+					]
+				}
+			],
+			'simple-import-sort/exports': 'error'
+		}
+	}
+]

package.json

@@ -50,6 +50,9 @@
 		"zod": "^3.20.6"
 	},
 	"devDependencies": {
+		"@eslint/compat": "^1.1.1",
+		"@eslint/eslintrc": "^3.1.0",
+		"@eslint/js": "^9.8.0",
 		"@jest/types": "29.6.3",
 		"@redocly/cli": "1.19.0",
 		"@types/html-to-text": "9.0.4",
@@ -64,6 +67,7 @@
 		"eslint-config-prettier": "9.1.0",
 		"eslint-plugin-jest": "28.6.0",
 		"eslint-plugin-simple-import-sort": "12.1.1",
+		"globals": "^15.9.0",
 		"jest": "29.7.0",
 		"nodemon": "3.1.4",
 		"prettier": "3.2.5",