build: add files of vant-cli 2

packages/vant-cli/site/common/iframe-router.js

@@ -0,0 +1,29 @@
+/**
+ * 同步父窗口和 iframe 的 vue-router 状态
+ */
+
+import { iframeReady, isMobile } from '.';
+
+window.syncPath = function () {
+  const router = window.vueRouter;
+  const isInIframe = window !== window.top;
+  const currentDir = router.history.current.path;
+
+  if (isInIframe) {
+    window.top.changePath(currentDir);
+  } else if (!isMobile) {
+    const iframe = document.querySelector('iframe');
+    if (iframe) {
+      iframeReady(iframe, () => {
+        iframe.contentWindow.changePath(currentDir);
+      });
+    }
+  }
+};
+
+window.changePath = function (path = '') {
+  // should preserve hash for anchor
+  if (window.vueRouter.currentRoute.path !== path) {
+    window.vueRouter.replace(path).catch(() => {});
+  }
+};

packages/vant-cli/site/common/index.js

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+function iframeReady(iframe, callback) {
+  const doc = iframe.contentDocument || iframe.contentWindow.document;
+  const interval = () => {
+    if (iframe.contentWindow.changePath) {
+      callback();
+    } else {
+      setTimeout(() => {
+        interval();
+      }, 50);
+    }
+  };
+
+  if (doc.readyState === 'complete') {
+    interval();
+  } else {
+    iframe.onload = interval;
+  }
+}
+
+const ua = navigator.userAgent.toLowerCase();
+const isMobile = /ios|iphone|ipod|ipad|android/.test(ua);
+
+export {
+  isMobile,
+  iframeReady
+};