v1.2.2, TS compatible trigger via array of strings

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rete",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "JavaScript framework",
   "main": "build/rete.common.js",
   "module": "build/rete.esm.js",

src/core/emitter.ts

@@ -9,8 +9,10 @@ export class Emitter<EventTypes> {
         this.events = events instanceof Emitter ? events.events : events.handlers;
     }
 
-    on<K extends keyof EventTypes>(names: K, handler: (args: EventTypes[K]) => any) {
-        (names as string).split(' ').forEach(name => {
+    on<K extends keyof EventTypes>(names: K | K[], handler: (args: EventTypes[K]) => any) {
+        const events = names instanceof Array ? names : (names as string).split(' ');
+
+        (events as Array<string>).forEach(name => {
             if (!this.events[name])
                 throw new Error(`The event ${name} does not exist`);
             this.events[name].push(handler);

test/editor.ts

@@ -86,6 +86,13 @@ describe('Editor', () => {
 
         assert.doesNotThrow(() => editor.removeConnection(connection), Error, 'remove connection');
         assert.equal((n1.outputs.get('name') as Output).connections.length, 0, 'no connections');
-
     });
+
+    it('events', () => {
+        var editor = new Rete.NodeEditor('[email protected]', c);
+
+        assert.doesNotThrow(() => editor.trigger('nodecreate'), Error, 'nodecreate events exist');
+        assert.throws(() => editor.on('wrngevent' as any, () => {}), Error, 'throw exception on non-exist event');
+        assert.doesNotThrow(() => editor.on(['nodecreate'], () => {}), Error, 'on events array');
+    })
 })