feat: integrate prettier and enforce code formatting

.eslintrc.yml

@@ -1,47 +1,36 @@
 env:
-    es6: true
-    node: true
-    mocha: true
-extends: 'eslint:recommended'
+  es6: true
+  node: true
+  mocha: true
+extends:
+  - 'eslint:recommended'
+  - 'prettier'
 parserOptions:
-    ecmaVersion: 13
-    sourceType: script
+  ecmaVersion: 13
+  sourceType: script
 rules:
-    indent:
-        - error
-        - 4
-    linebreak-style:
-        - warn
-        - unix
-    quotes:
-        - error
-        - single
-    semi:
-        - error
-        - always
-    no-unused-vars:
-        - error
-        - args: none
-    no-console: warn
-    curly: error
-    eqeqeq: error
-    no-throw-literal: error
-    strict: error
-    no-var: error
-    dot-notation: error
-    no-tabs: error
-    no-trailing-spaces: 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
-    valid-jsdoc:
-        - error
-        - requireReturn: false
-    yoda: error
+  no-unused-vars:
+    - error
+    - args: none
+  no-console: warn
+  curly: error
+  eqeqeq: error
+  no-throw-literal: error
+  strict: error
+  no-var: error
+  dot-notation: error
+  no-tabs: error
+  #HQ: We keep no-tabs because Prettier also enforces spaces.
+  # no-use-before-define: error
+  no-useless-call: error
+  no-with: error
+  require-jsdoc:
+    - error
+    - require:
+        ClassDeclaration: true
+        MethodDefinition: true
+        FunctionDeclaration: true
+  valid-jsdoc:
+    - error
+    - requireReturn: false
+  yoda: error

.prettierignore

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

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "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"
+  }
+}