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node_modules/vant/es/composables/use-touch.mjs

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+import { ref } from "vue";
+import { TAP_OFFSET } from "../utils/index.mjs";
+function getDirection(x, y) {
+  if (x > y) {
+    return "horizontal";
+  }
+  if (y > x) {
+    return "vertical";
+  }
+  return "";
+}
+function useTouch() {
+  const startX = ref(0);
+  const startY = ref(0);
+  const deltaX = ref(0);
+  const deltaY = ref(0);
+  const offsetX = ref(0);
+  const offsetY = ref(0);
+  const direction = ref("");
+  const isTap = ref(true);
+  const isVertical = () => direction.value === "vertical";
+  const isHorizontal = () => direction.value === "horizontal";
+  const reset = () => {
+    deltaX.value = 0;
+    deltaY.value = 0;
+    offsetX.value = 0;
+    offsetY.value = 0;
+    direction.value = "";
+    isTap.value = true;
+  };
+  const start = (event) => {
+    reset();
+    startX.value = event.touches[0].clientX;
+    startY.value = event.touches[0].clientY;
+  };
+  const move = (event) => {
+    const touch = event.touches[0];
+    deltaX.value = (touch.clientX < 0 ? 0 : touch.clientX) - startX.value;
+    deltaY.value = touch.clientY - startY.value;
+    offsetX.value = Math.abs(deltaX.value);
+    offsetY.value = Math.abs(deltaY.value);
+    const LOCK_DIRECTION_DISTANCE = 10;
+    if (!direction.value || offsetX.value < LOCK_DIRECTION_DISTANCE && offsetY.value < LOCK_DIRECTION_DISTANCE) {
+      direction.value = getDirection(offsetX.value, offsetY.value);
+    }
+    if (isTap.value && (offsetX.value > TAP_OFFSET || offsetY.value > TAP_OFFSET)) {
+      isTap.value = false;
+    }
+  };
+  return {
+    move,
+    start,
+    reset,
+    startX,
+    startY,
+    deltaX,
+    deltaY,
+    offsetX,
+    offsetY,
+    direction,
+    isVertical,
+    isHorizontal,
+    isTap
+  };
+}
+export {
+  useTouch
+};