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node_modules/event-pubsub/es6.js

@@ -0,0 +1,99 @@
+'use strict';
+
+class EventPubSub {
+    constructor( scope ) {
+        this._events_ = {};
+        this.publish = this.trigger = this.emit;
+        this.subscribe = this.on;
+        this.unSubscribe = this.off;
+    }
+
+    on( type, handler, once ) {
+        if ( !handler ) {
+            throw new ReferenceError( 'handler not defined.' );
+        }
+
+        if ( !this._events_[ type ] ) {
+            this._events_[ type ] = [];
+        }
+
+         if(once){
+            handler._once_ = once;
+        }
+
+        this._events_[ type ].push( handler );
+        return this;
+    }
+
+    once( type, handler ) {
+        return this.on( type, handler, true );
+    }
+
+    off( type, handler ) {
+        if ( !this._events_[ type ] ) {
+            return this;
+        }
+
+        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 ];
+            return this;
+        }
+
+        const handlers = this._events_[ type ];
+
+        while ( handlers.includes( handler ) ) {
+            handlers.splice(
+                handlers.indexOf( handler ),
+                1
+            );
+        }
+
+        if ( handlers.length < 1 ) {
+            delete this._events_[ type ];
+        }
+
+        return this;
+    }
+
+    emit( type, ...args ) {
+        if ( !this._events_[ type ] ) {
+            return this.emit$( type, ...args );
+        }
+
+        const handlers = this._events_[ type ];
+        const onceHandled=[];
+
+        for ( let handler of handlers ) {
+            handler.apply( this, args );
+            if(handler._once_){
+              onceHandled.push(handler);
+            }
+        }
+
+        for(let handler of onceHandled){
+          this.off(type,handler);
+        }
+
+        return this.emit$( type, ...args );
+    }
+
+    emit$( type, ...args ) {
+        if ( !this._events_[ '*' ] ) {
+            return this;
+        }
+
+        const catchAll = this._events_[ '*' ];
+
+        for ( let handler of catchAll ) {
+            handler.call( this, type, ...args );
+        }
+
+        return this;
+    }
+}
+
+module.exports = EventPubSub;