added prettier eslint setup (#4815)

* Add Prettier + ESLint configuration and CI integration

* updated .eslintrc.json

* updated .prettierignore

---------

Co-authored-by: poolo <pooloforall@gmail.com>

Author: Layyzyy

.editorconfig

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

.eslintignore

@@ -0,0 +1,6 @@
+node_modules/
+lib/
+dist/
+build/
+coverage/
+*.min.js

.eslintrc.json

@@ -13,20 +13,16 @@
       "globalReturn": false
     }
   },
-  "extends": ["eslint:recommended", "prettier"],
+  "extends": ["eslint:recommended"],
   "ignorePatterns": ["lib/**"],
   "rules": {
     "no-console": "off",
-    "no-mixed-spaces-and-tabs": "warn",
     "no-unused-vars": "off",
     "no-use-before-define": "off",
     "prefer-const": "off",
     "no-undef": "off",
     "no-redeclare": "off",
-    "indent": ["warn", 4, { "SwitchCase": 1 }],
-    "quotes": ["warn", "double", { "avoidEscape": true }],
     "semi": "error",
-    "no-trailing-spaces": ["warn", { "skipBlankLines": true, "ignoreComments": true }],
     "no-duplicate-case": "error",
     "no-irregular-whitespace": "warn",
     "no-prototype-builtins" : "off",

.github/workflows/linter.yml

@@ -31,11 +31,17 @@ jobs:
           echo "EOF" >> $GITHUB_ENV
 
       - name: Install dependencies
-        run: npm install eslint
+        run: npm install eslint prettier
 
       - name: Run ESLint on changed files
         if: env.files != ''
         run: |
           echo "Linting the following files:"
           echo "$files"
           echo "$files" | xargs npx eslint
+      - name: Run Prettier check on changed files
+        if: env.files != ''
+        run: |
+          echo "Checking formatting for the following files:"
+          echo "$files"
+          echo "$files" | xargs npx prettier --check

.prettierignore

@@ -0,0 +1,6 @@
+node_modules/
+lib/
+dist/
+build/
+*.min.js
+*.svg

.prettierrc

@@ -0,0 +1,10 @@
+{
+  "printWidth": 100,
+  "tabWidth": 2,
+  "useTabs": false,
+  "semi": true,
+  "singleQuote": false,
+  "trailingComma": "none",
+  "bracketSpacing": true,
+  "arrowParens": "avoid"
+}