Add lines-between-class-members

Author: Sergey Sova

.eslintrc.js

@@ -43,6 +43,7 @@ module.exports = {
     'brace-style': ['error', 'stroustrup'],
     'quote-props': ['error', 'as-needed'],
     'no-plusplus': 'off',
+    'lines-between-class-members': ['error', 'always', { exceptAfterSingleLine: true }],
 
     'import/no-unresolved': 'off',
     'import/extensions': ['error', 'never',

readme.md

@@ -291,6 +291,36 @@ https://eslint.org/docs/rules/no-plusplus
 We use it, because it good shorthand for some cases.
 
 
+## lines-between-class-members: `[error, always]`
+
+```js
+{ exceptAfterSingleLine: true }
+```
+
+https://eslint.org/docs/rules/lines-between-class-members
+
+Add lines between class methods/properties.
+
+Example:
+```js
+class Foo {
+  id = 1
+  name = 'Foo'
+
+  constructor() {
+    // code
+  }
+
+  toString() { /* single line */ }
+
+  member() {
+    // code
+  }
+
+}
+```
+
+
 ## import/no-unresolved: `off`
 
 https://github.com/benmosher/eslint-plugin-import/blob/master/docs/rules/no-unresolved.md