first commit

node_modules/vant/lib/tabs/utils.js

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+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var stdin_exports = {};
+__export(stdin_exports, {
+  scrollLeftTo: () => scrollLeftTo,
+  scrollTopTo: () => scrollTopTo
+});
+module.exports = __toCommonJS(stdin_exports);
+var import_use = require("@vant/use");
+var import_utils = require("../utils");
+function scrollLeftTo(scroller, to, duration) {
+  let rafId;
+  let count = 0;
+  const from = scroller.scrollLeft;
+  const frames = duration === 0 ? 1 : Math.round(duration * 1e3 / 16);
+  let scrollLeft = from;
+  function cancel() {
+    (0, import_use.cancelRaf)(rafId);
+  }
+  function animate() {
+    scrollLeft += (to - from) / frames;
+    scroller.scrollLeft = scrollLeft;
+    if (++count < frames) {
+      rafId = (0, import_use.raf)(animate);
+    }
+  }
+  animate();
+  return cancel;
+}
+function scrollTopTo(scroller, to, duration, callback) {
+  let rafId;
+  let current = (0, import_utils.getScrollTop)(scroller);
+  const isDown = current < to;
+  const frames = duration === 0 ? 1 : Math.round(duration * 1e3 / 16);
+  const step = (to - current) / frames;
+  function cancel() {
+    (0, import_use.cancelRaf)(rafId);
+  }
+  function animate() {
+    current += step;
+    if (isDown && current > to || !isDown && current < to) {
+      current = to;
+    }
+    (0, import_utils.setScrollTop)(scroller, current);
+    if (isDown && current < to || !isDown && current > to) {
+      rafId = (0, import_use.raf)(animate);
+    } else if (callback) {
+      rafId = (0, import_use.raf)(callback);
+    }
+  }
+  animate();
+  return cancel;
+}