feat: Setup a first panelSnap without jQuery

src/panelSnap.js

@@ -0,0 +1,33 @@
+import { getScrollingElement } from './utilities';
+
+const defaultOptions = {
+  container: document.body,
+  panelSelector: '> section',
+  offset: 0,
+  directionThreshold: 50,
+  delay: 0,
+  slideSpeed: 200,
+  easing: t => t,
+  onSnapStart: e => e,
+  onSnapFinish: e => e,
+  onActivate: e => e,
+};
+
+export default class PanelSnap {
+  constructor(options) {
+    this.options = {
+      ...defaultOptions,
+      ...options,
+    };
+
+    this.container = this.options.container;
+    this.scrollingContainer = getScrollingElement(this.container);
+    this.panelList = this.container.querySelectorAll(this.options.panelSelector);
+
+    this.isEnabled = true;
+    this.isMouseDown = false;
+    this.animation = null;
+    this.currentScrollOffset = this.scrollingContainer.scrollTop;
+    this.targetScrollOffset = this.currentScrollOffset;
+  }
+}