chore: add prettier and editconfig

Author: dukeluo

.editorconfig

@@ -0,0 +1,12 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false

.eslintrc.js

@@ -1,18 +1,23 @@
-"use strict";
+'use strict';
 
 module.exports = {
   root: true,
   extends: [
-    "eslint:recommended",
-    "plugin:eslint-plugin/recommended",
-    "plugin:node/recommended",
+    'eslint:recommended',
+    'plugin:eslint-plugin/recommended',
+    'plugin:node/recommended',
+    'prettier',
   ],
+  plugins: ['prettier'],
+  rules: {
+    'prettier/prettier': 'error',
+  },
   env: {
     node: true,
   },
   overrides: [
     {
-      files: ["tests/**/*.js"],
+      files: ['tests/**/*.js'],
       env: { mocha: true },
     },
   ],

.prettierignore

@@ -0,0 +1,4 @@
+.DS_Store
+node_modules
+.idea
+

.prettierrc.json

@@ -0,0 +1,10 @@
+{
+  "printWidth": 80,
+  "semi": true,
+  "singleQuote": true,
+  "quoteProps": "as-needed",
+  "trailingComma": "es5",
+  "bracketSpacing": true,
+  "arrowParens": "always",
+  "embeddedLanguageFormatting": "auto"
+}

lib/index.js

@@ -2,21 +2,17 @@
  * @fileoverview check the file folder
  * @author Duke Luo
  */
-"use strict";
+'use strict';
 
 //------------------------------------------------------------------------------
 // Requirements
 //------------------------------------------------------------------------------
 
-const requireIndex = require("requireindex");
+const requireIndex = require('requireindex');
 
 //------------------------------------------------------------------------------
 // Plugin Definition
 //------------------------------------------------------------------------------
 
-
 // import all rules in lib/rules
-module.exports.rules = requireIndex(__dirname + "/rules");
-
-
-
+module.exports.rules = requireIndex(__dirname + '/rules');

package-lock.json

@@ -18,9 +18,12 @@
   },
   "devDependencies": {
     "eslint": "^8.0.1",
+    "eslint-config-prettier": "8.3.0",
     "eslint-plugin-eslint-plugin": "^4.0.1",
     "eslint-plugin-node": "^11.1.0",
-    "mocha": "^9.1.3"
+    "eslint-plugin-prettier": "4.0.0",
+    "mocha": "^9.1.3",
+    "prettier": "2.5.1"
   },
   "engines": {
     "node": "12.x || 14.x || >= 16"