first commit

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

@@ -0,0 +1,30 @@
+function iframeReady(iframe, callback) {
+  const doc = iframe.contentDocument || iframe.contentWindow.document;
+  const interval = () => {
+    if (iframe.contentWindow.replacePath) {
+      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 function decamelize(str, sep = '-') {
+  return str
+    .replace(/([a-z\d])([A-Z])/g, '$1' + sep + '$2')
+    .replace(/([A-Z]+)([A-Z][a-z\d]+)/g, '$1' + sep + '$2')
+    .toLowerCase();
+}
+
+export { isMobile, iframeReady };