fix incorrect display when no fill or stroke

src/shapes/Image.ts

@@ -2,7 +2,10 @@ import { Util } from '../Util';
 import { Factory } from '../Factory';
 import { Shape, ShapeConfig } from '../Shape';
 import { _registerNode } from '../Global';
-import { getNumberOrArrayOfNumbersValidator, getNumberValidator } from '../Validators';
+import {
+  getNumberOrArrayOfNumbersValidator,
+  getNumberValidator,
+} from '../Validators';
 
 import { GetSet, IRect } from '../types';
 import { Context } from '../Context';
@@ -91,7 +94,7 @@ export class Image extends Shape<ImageConfig> {
       }
     }
 
-    if (this.hasFill() || this.hasStroke()) {
+    if (this.hasFill() || this.hasStroke() || cornerRadius) {
       context.beginPath();
       cornerRadius
         ? Util.drawRoundedRectPath(context, width, height, cornerRadius)
@@ -101,13 +104,10 @@ export class Image extends Shape<ImageConfig> {
     }
 
     if (image) {
-      // context.save();
       if (cornerRadius) {
-        // Util.drawRoundedRectPath(context, width, height, cornerRadius);
         context.clip();
       }
       context.drawImage.apply(context, params);
-      // context.restore();
     }
     // If you need to draw later, you need to execute save/restore
   }

test/unit/Image-test.ts

@@ -385,4 +385,32 @@ describe('Image', function () {
       done();
     });
   });
+
+  it.only('corner radius', function (done) {
+    loadImage('darth-vader.jpg', (imageObj) => {
+      var stage = addStage();
+
+      var layer = new Konva.Layer();
+      var darth = new Konva.Image({
+        x: 20,
+        y: 20,
+        image: imageObj,
+        cornerRadius: 10,
+        draggable: true,
+        stroke: 'red',
+        strokeWidth: 100,
+        strokeEnabled: false,
+      });
+
+      layer.add(darth);
+      stage.add(layer);
+
+      assert.equal(
+        layer.getContext().getTrace(true),
+        'clearRect();save();transform();beginPath();moveTo();lineTo();arc();lineTo();arc();lineTo();arc();lineTo();arc();closePath();clip();drawImage();restore();'
+      );
+
+      done();
+    });
+  });
 });