Removed import aliases in favor for relative imports, to help IDE with autocompletion and jsdocs support

Author: Oksydan

_dev/js/checkout.js

@@ -1 +1 @@
-import '@js/checkout/index';
+import './checkout/index';

_dev/js/listing.js

@@ -1 +1 @@
-import '@js/listing/index';
+import './listing/index';

_dev/js/product.js

@@ -1 +1 @@
-import '@js/product/index';
+import './product/index';

_dev/js/theme.js

@@ -1 +1 @@
-import '@js/theme/index';
+import './theme/index';

_dev/js/theme/components/sliders/PageSlider.js

@@ -1,5 +1,4 @@
-import SwiperSlider from '@js/theme/components/sliders/SwiperSlider';
-
+import SwiperSlider from './SwiperSlider';
 class PageSlider {
   constructor() {
     this.observeElementClass = 'js-slider-observed';