removing unused variable initializations in es6 and es5 files for errors

adding gitignore and npmignore files to avoid committing

.gitignore

@@ -0,0 +1 @@
+npm-debug.log

.npmignore

@@ -0,0 +1 @@
+examples/

es5.js

@@ -9,8 +9,7 @@ function EventPubSub() {
 
     function on(type,handler){
         if(!handler){
-            const err=new ReferenceError('handler not defined.');
-            throw(err);
+            throw new ReferenceError('handler not defined.');
         }
 
         if(!this._events_[type]){
@@ -27,8 +26,7 @@ function EventPubSub() {
         }
 
         if(!handler){
-            var err=new ReferenceError('handler not defined. if you wish to remove all handlers from the event please pass "*" as the handler');
-            throw err;
+            throw new ReferenceError('handler not defined. if you wish to remove all handlers from the event please pass "*" as the handler');
         }
 
         if(handler=='*'){

es6.js

@@ -1,85 +1,83 @@
 'use strict';
 
 class EventPubSub {
-    constructor(scope){
-        this._events_={};
-        this.publish=this.trigger=this.emit;
-        this.subscribe=this.on;
-        this.unSubscribe=this.off;
+    constructor( scope ) {
+        this._events_ = {};
+        this.publish = this.trigger = this.emit;
+        this.subscribe = this.on;
+        this.unSubscribe = this.off;
     }
 
-    on(type,handler){
-        if(!handler){
-            const err=new ReferenceError('handler not defined.');
-            throw(err);
+    on( type, handler ) {
+        if ( !handler ) {
+            throw new ReferenceError( 'handler not defined.' );
         }
 
-        if(!this._events_[type]){
-            this._events_[type]=[];
+        if ( !this._events_[ type ] ) {
+            this._events_[ type ] = [];
         }
 
-        this._events_[type].push(handler);
+        this._events_[ type ].push( handler );
         return this;
     }
 
-    off(type,handler){
-        if(!this._events_[type]){
+    off( type, handler ) {
+        if ( !this._events_[ type ] ) {
             return this;
         }
 
-        if(!handler){
-            var err=new ReferenceError('handler not defined. if you wish to remove all handlers from the event please pass "*" as the handler');
-            throw err;
+        if ( !handler ) {
+            throw new ReferenceError( 'handler not defined. if you wish to remove all handlers from the event please pass "*" as the handler' );
         }
 
-        if(handler=='*'){
-            delete this._events_[type];
+        if ( handler == '*' ) {
+            delete this._events_[ type ];
             return this;
         }
 
-        const handlers=this._events_[type];
+        const handlers = this._events_[ type ];
 
-        while(handlers.includes(handler)){
+        while ( handlers.includes( handler ) ) {
             handlers.splice(
-                handlers.indexOf(handler),
+                handlers.indexOf( handler ),
                 1
             );
         }
 
-        if(handlers.length<1){
-            delete this._events_[type];
+        if ( handlers.length < 1 ) {
+            delete this._events_[ type ];
         }
 
         return this;
     }
 
-    emit(type,...args){
-        if(!this._events_[type]){
-            return this.emit$(type,...args);
+    emit( type, ...args ) {
+        if ( !this._events_[ type ] ) {
+            return this.emit$( type, ...args );
         }
 
-        const handlers=this._events_[type];
+        const handlers = this._events_[ type ];
 
-        for(let handler of handlers){
-            handler.apply(this, args);
+        for ( let handler of handlers ) {
+            handler.apply( this, args );
         }
 
-        return this.emit$(type,...args);
+        return this.emit$( type, ...args );
     }
 
-    emit$(type,...args){
-        if(!this._events_['*']){
+    emit$( type, ...args ) {
+        if ( !this._events_[ '*' ] ) {
             return this;
         }
 
-        const catchAll=this._events_['*'];
+        const catchAll = this._events_[ '*' ];
 
-        for(let handler of catchAll){
-            handler.call(this, type, ...args);
+        for ( let handler of catchAll ) {
+            handler.call( this, type, ...args );
         }
 
         return this;
     }
 }
 
-module.exports=EventPubSub;
+module.exports = EventPubSub;