chore: prettier packages codes

packages/vant-touch-emulator/index.js

@@ -9,16 +9,30 @@ var supportTouch = 'ontouchstart' in window;
 
 // polyfills
 if (!document.createTouch) {
-  document.createTouch = function(view, target, identifier, pageX, pageY, screenX, screenY) {
+  document.createTouch = function(
+    view,
+    target,
+    identifier,
+    pageX,
+    pageY,
+    screenX,
+    screenY
+  ) {
     // auto set
-    return new Touch(target, identifier, {
-      pageX: pageX,
-      pageY: pageY,
-      screenX: screenX,
-      screenY: screenY,
-      clientX: pageX - window.pageXOffset,
-      clientY: pageY - window.pageYOffset
-    }, 0, 0);
+    return new Touch(
+      target,
+      identifier,
+      {
+        pageX: pageX,
+        pageY: pageY,
+        screenX: screenX,
+        screenY: screenY,
+        clientX: pageX - window.pageXOffset,
+        clientY: pageY - window.pageYOffset,
+      },
+      0,
+      0
+    );
   };
 }
 
@@ -78,15 +92,12 @@ function TouchList() {
   return touchList;
 }
 
-
-
 /**
  * only trigger touches when the left mousebutton has been pressed
  * @param touchType
  * @returns {Function}
  */
 
- 
 var initiated = false;
 function onMouse(touchType) {
   return function(ev) {
@@ -101,13 +112,17 @@ function onMouse(touchType) {
     }
 
     if (ev.type === 'mousemove' && !initiated) {
-      return
+      return;
     }
 
     // The EventTarget on which the touch point started when it was first placed on the surface,
     // even if the touch point has since moved outside the interactive area of that element.
     // also, when the target doesnt exist anymore, we update it
-    if (ev.type === 'mousedown' || !eventTarget || eventTarget && !eventTarget.dispatchEvent) {
+    if (
+      ev.type === 'mousedown' ||
+      !eventTarget ||
+      (eventTarget && !eventTarget.dispatchEvent)
+    ) {
       eventTarget = ev.target;
     }