diff --git a/runtime/JavaScript/src/antlr4/PredictionContext.js b/runtime/JavaScript/src/antlr4/PredictionContext.js
index e10b0a662..b40cc79ed 100644
--- a/runtime/JavaScript/src/antlr4/PredictionContext.js
+++ b/runtime/JavaScript/src/antlr4/PredictionContext.js
@@ -7,6 +7,7 @@ const RuleContext = require('./RuleContext');
 const {Hash, Map, equalArrays} = require('./Utils');
 
 class PredictionContext {
+
 	constructor(cachedHashCode) {
 		this.cachedHashCode = cachedHashCode;
 	}
@@ -83,6 +84,7 @@ function calculateHashString(parent, returnState) {
  * can be used for both lexers and parsers.
  */
 class PredictionContextCache {
+
 	constructor() {
 		this.cache = new Map();
 	}
@@ -115,6 +117,7 @@ class PredictionContextCache {
 
 
 class SingletonPredictionContext extends PredictionContext {
+
 	constructor(parent, returnState) {
 		let hashCode = 0;
 		const hash = new Hash();
@@ -182,6 +185,7 @@ class SingletonPredictionContext extends PredictionContext {
 }
 
 class EmptyPredictionContext extends SingletonPredictionContext {
+
 	constructor() {
 		super(null, PredictionContext.EMPTY_RETURN_STATE);
 	}
@@ -211,6 +215,7 @@ class EmptyPredictionContext extends SingletonPredictionContext {
 PredictionContext.EMPTY = new EmptyPredictionContext();
 
 class ArrayPredictionContext extends PredictionContext {
+
 	constructor(parents, returnStates) {
 		/**
 		 * Parent can be null only if full ctx mode and we make an array
diff --git a/runtime/JavaScript/src/antlr4/atn/ATN.js b/runtime/JavaScript/src/antlr4/atn/ATN.js
index 79c84b213..6125f4f4a 100644
--- a/runtime/JavaScript/src/antlr4/atn/ATN.js
+++ b/runtime/JavaScript/src/antlr4/atn/ATN.js
@@ -8,8 +8,8 @@ const {IntervalSet} = require('./../IntervalSet');
 const {Token} = require('./../Token');
 
 class ATN {
-    constructor(grammarType , maxTokenType) {
 
+    constructor(grammarType , maxTokenType) {
         /**
          * Used for runtime deserialization of ATNs from strings
          * The type of the ATN.