提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/mixins/touch.js

@@ -0,0 +1,40 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.touch = void 0;
+// @ts-nocheck
+var MIN_DISTANCE = 10;
+function getDirection(x, y) {
+    if (x > y && x > MIN_DISTANCE) {
+        return 'horizontal';
+    }
+    if (y > x && y > MIN_DISTANCE) {
+        return 'vertical';
+    }
+    return '';
+}
+exports.touch = Behavior({
+    methods: {
+        resetTouchStatus: function () {
+            this.direction = '';
+            this.deltaX = 0;
+            this.deltaY = 0;
+            this.offsetX = 0;
+            this.offsetY = 0;
+        },
+        touchStart: function (event) {
+            this.resetTouchStatus();
+            var touch = event.touches[0];
+            this.startX = touch.clientX;
+            this.startY = touch.clientY;
+        },
+        touchMove: function (event) {
+            var touch = event.touches[0];
+            this.deltaX = touch.clientX - this.startX;
+            this.deltaY = touch.clientY - this.startY;
+            this.offsetX = Math.abs(this.deltaX);
+            this.offsetY = Math.abs(this.deltaY);
+            this.direction =
+                this.direction || getDirection(this.offsetX, this.offsetY);
+        },
+    },
+});