feat: integrate prettier and enforce code formatting

.eslintrc.yml

@@ -2,7 +2,9 @@ env:
     es6: true
     node: true
     mocha: true
-extends: 'eslint:recommended'
+extends:
+    - 'eslint:recommended'
+    - 'prettier'
 parserOptions:
     ecmaVersion: 13
     sourceType: script
@@ -11,7 +13,7 @@ rules:
         - error
         - 4
     linebreak-style:
-        - warn
+        - error
         - unix
     quotes:
         - error
@@ -31,16 +33,16 @@ rules:
     dot-notation: error
     no-tabs: error
     no-trailing-spaces: error
-    # no-use-before-define: error
+    no-use-before-define: error
     no-useless-call: error
     no-with: error
     operator-linebreak: error
     require-jsdoc:
         - error
         - require:
-            ClassDeclaration: true
-            MethodDefinition: true
-            FunctionDeclaration: true
+              ClassDeclaration: true
+              MethodDefinition: true
+              FunctionDeclaration: true
     valid-jsdoc:
         - error
         - requireReturn: false

.prettierignore

@@ -0,0 +1,7 @@
+coverage
+out
+doc
+node_modules
+dist
+packages
+**/*.min.js

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 4,
+  "trailingComma": "none",
+  "semi": true
+}

.vscode/settings.json

@@ -0,0 +1,13 @@
+{
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.formatOnSave": true,
+  "editor.codeActionsOnSave": {
+    "source.fixAll.eslint": "explicit"
+  },
+  "[javascript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  }
+}