Fix missing rest files of directory upload

src/traverseFileTree.js

@@ -1,3 +1,26 @@
+function loopFiles(item, callback) {
+  const dirReader = item.createReader();
+  let fileList = [];
+
+  function sequence() {
+    dirReader.readEntries((entries) => {
+      const entryList = Array.prototype.slice.apply(entries);
+      fileList = fileList.concat(entryList);
+
+      // Check if all the file has been viewed
+      const isFinished = !entryList.length;
+
+      if (isFinished) {
+        callback(fileList);
+      } else {
+        sequence();
+      }
+    });
+  }
+
+  sequence();
+}
+
 const traverseFileTree = (files, callback, isAccepted) => {
   const _traverseFileTree = (item, path) => {
     path = path || '';
@@ -8,12 +31,10 @@ const traverseFileTree = (files, callback, isAccepted) => {
         }
       });
     } else if (item.isDirectory) {
-      const dirReader = item.createReader();
-
-      dirReader.readEntries((entries) => {
-        for (const entrieItem of entries) {
-          _traverseFileTree(entrieItem, `${path}${item.name}/`);
-        }
+      loopFiles(item, (entries) => {
+        entries.forEach((entryItem) => {
+          _traverseFileTree(entryItem, `${path}${item.name}/`);
+        });
       });
     }
   };

tests/uploader.spec.js

@@ -22,8 +22,16 @@ const makeFileSystemEntry = (item) => {
       handle(new Item(item.name));
     },
     createReader: () => {
+      let first = true;
       return {
-        readEntries: handle => handle(item.children.map(makeFileSystemEntry)),
+        readEntries(handle) {
+          if (!first) {
+            return [];
+          }
+
+          first = false;
+          return handle(item.children.map(makeFileSystemEntry));
+        },
       };
     },
   };