Update eslint rule arrow-parens to always

Author: tshemsedinov

.eslintrc.json

@@ -212,7 +212,7 @@
     ],
     "arrow-parens": [
       "error",
-      "as-needed"
+      "always"
     ],
     "arrow-body-style": [
       "error",

JavaScript/4-operations.js

@@ -19,15 +19,15 @@ class BankAccount {
 BankAccount.collection = new Map();
 
 const operations = {
-  Withdraw: command => {
+  Withdraw: (command) => {
     const account = BankAccount.collection.get(command.account);
     account.balance -= command.amount;
   },
-  Income: command => {
+  Income: (command) => {
     const account = BankAccount.collection.get(command.account);
     account.balance += command.amount;
   },
-  Allowed: command => {
+  Allowed: (command) => {
     if (command.operation === 'Income') return true;
     const account = BankAccount.collection.get(command.account);
     return account.balance >= command.amount;

JavaScript/5-undo.js

@@ -24,21 +24,21 @@ BankAccount.collection = new Map();
 
 const operations = {
   Withdraw: {
-    execute: command => {
+    execute: (command) => {
       const account = BankAccount.find(command.account);
       account.balance -= command.amount;
     },
-    undo: command => {
+    undo: (command) => {
       const account = BankAccount.find(command.account);
       account.balance += command.amount;
     },
   },
   Income: {
-    execute: command => {
+    execute: (command) => {
       const account = BankAccount.find(command.account);
       account.balance += command.amount;
     },
-    undo: command => {
+    undo: (command) => {
       const account = BankAccount.find(command.account);
       account.balance -= command.amount;
     },