Update eslint config and code style

Author: tshemsedinov

.eslintrc.json

@@ -11,7 +11,8 @@
   "globals": {
     "BigInt": true,
     "SharedArrayBuffer": true,
-    "Atomics": true
+    "Atomics": true,
+    "BigInt": true
   },
   "rules": {
     "indent": [
@@ -215,7 +216,7 @@
     ],
     "arrow-parens": [
       "error",
-      "as-needed"
+      "always"
     ],
     "arrow-body-style": [
       "error",

JavaScript/8-await-counting.js

@@ -9,7 +9,7 @@ class CountingSemaphore {
   }
 
   enter() {
-    return new Promise(resolve => {
+    return new Promise((resolve) => {
       if (this.counter > 0) {
         this.counter--;
         resolve();
@@ -31,7 +31,7 @@ class CountingSemaphore {
 
 // Usage
 
-const job = async task => {
+const job = async (task) => {
   console.log('try enter', task);
   await semaphore.enter();
   console.log('enter', task);