chore(lint): migrate to eslint's flag config

Author: ram-amoncar

.eslintrc.json

@@ -0,0 +1,47 @@
+'use strict'
+
+import stylistic from '@stylistic/eslint-plugin'
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended'
+import jest from 'eslint-plugin-jest'
+import love from 'eslint-config-love'
+
+export default [
+    {
+        ignores: ['dist', '**/*.js']
+    },
+    // Stylistic
+    {
+        plugins: {
+            '@stylistic': stylistic
+        },
+        rules: {
+            '@stylistic/indent': ['error', 4],
+            '@stylistic/quotes': ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
+            '@stylistic/space-before-function-paren': 'off',
+            '@stylistic/no-unmodified-loop-condition': 'off'
+        }
+    },
+    // eslint-config-love
+    {
+        ...love
+    },
+    // Jest
+    {
+        files: ['test/**/*.test.ts', 'tests/**/*.test.ts', 'test/**/*.spec.ts', 'tests/**/*.spec.ts'],
+        ...jest.configs['flat/recommended'],
+        rules: {
+            ...jest.configs['flat/recommended'].rules,
+            ...jest.configs['flat/style'].rules
+        }
+    },
+    // Prettier
+    eslintPluginPrettierRecommended,
+    // Custom
+    {
+        rules: {
+            '@typescript-eslint/no-magic-numbers': 'off',
+            'jest/consistent-test-it': ['error', { fn: 'test' }]
+        },
+        files: ['tests/**.test.ts']
+    }
+]

eslint.config.js

@@ -2,6 +2,7 @@
   "name": "@full-pack/string-pack",
   "version": "0.8.0",
   "description": "A lightweight and versatile String Utility Package for Node.js & Browser.",
+  "type": "module",
   "main": "./dist/index.js",
   "module": "./dist/index.mjs",
   "types": "./dist/index.d.ts",
@@ -30,8 +31,8 @@
     "coverage": "jest --coverage --config ./jest.config.ts",
     "format": "prettier -w .",
     "format:check": "prettier -c .",
-    "lint": "eslint . --ext .ts",
-    "lint:fix": "eslint --fix . --ext .ts"
+    "lint": "eslint .",
+    "lint:fix": "eslint --fix ."
   },
   "keywords": [
     "string",