Fix dispatchEvent(). Fixes #17 and #18.

Author: developit

.gitignore

@@ -1,4 +1,5 @@
 /dist
 /node_modules
 /npm-debug.log
+package-lock.json
 .DS_Store

src/undom.js

@@ -140,16 +140,19 @@ export default function undom() {
 			splice(this.__handlers[toLower(type)], handler, 0, true);
 		}
 		dispatchEvent(event) {
-			let t = event.currentTarget = this,
+			let t = event.target = this,
 				c = event.cancelable,
 				l, i;
 			do {
+				event.currentTarget = t;
 				l = t.__handlers && t.__handlers[toLower(event.type)];
 				if (l) for (i=l.length; i--; ) {
-					if ((l[i].call(t, event)===false || event._end) && c) break;
+					if ((l[i].call(t, event) === false || event._end) && c) {
+						event.defaultPrevented = true;
+					}
 				}
-			} while (event.bubbles && !(c && event._stop) && (event.target=t=t.parentNode));
-			return !event.defaultPrevented;
+			} while (event.bubbles && !(c && event._stop) && (t=t.parentNode));
+			return l!=null;
 		}
 	}
 
@@ -164,8 +167,8 @@ export default function undom() {
 	class Event {
 		constructor(type, opts) {
 			this.type = type;
-			this.bubbles = !!opts.bubbles;
-			this.cancelable = !!opts.cancelable;
+			this.bubbles = !!(opts && opts.bubbles);
+			this.cancelable = !!(opts && opts.cancelable);
 		}
 		stopPropagation() {
 			this._stop = true;

test/undom.js

@@ -240,7 +240,7 @@ describe('undom', () => {
 			});
 
 			it('should bubble if enabled', () => {
-				let event = { type:'foo', cancelable:true, bubbles:true };
+				let event = new document.defaultView.Event('foo', { cancelable:true, bubbles:true });
 				let child = document.createElement('div');
 				let parent = document.createElement('div');
 				parent.appendChild(child);
@@ -264,6 +264,32 @@ describe('undom', () => {
 				child.dispatchEvent(event);
 				expect(parent.fn).not.to.have.been.called;
 			});
+
+			it('should return `found`', () => {
+				let el = document.createElement('div');
+				let el2 = document.createElement('div');
+				el.addEventListener('foo', () => {});
+
+				expect(el.dispatchEvent(new document.defaultView.Event('foo'))).to.equal(true);
+				expect(el2.dispatchEvent(new document.defaultView.Event('foo'))).to.equal(false);
+			});
+
+			it('preventDefault() should set defaultPrevented', () => {
+				let event = new document.defaultView.Event('foo', { cancelable: true, bubbles: true });
+				let el = document.createElement('div');
+				let parent = document.createElement('div');
+				parent.appendChild(el);
+				let fn = spy(e => { e.preventDefault(); });
+				let parentFn = spy(e => { e.preventDefault(); });
+				el.addEventListener('foo', fn);
+				parent.addEventListener('foo', parentFn);
+
+				el.dispatchEvent(event);
+
+				expect(fn).to.have.been.calledOnce;
+				expect(parentFn).to.have.been.calledOnce;
+				expect(parentFn.firstCall.args[0]).to.have.property('defaultPrevented', true);
+			});
 		});
 	});
 });