prevent errors with corrupt files

dist/index.js

@@ -444,6 +444,7 @@
     handleStringifiedFile = (stringifiedFile) => {
       const file = parseValidObject(stringifiedFile);
       if (file == null) return;
+      this.storeFile(file);
     };
     // methods
     addFile = (file) => {
@@ -461,6 +462,8 @@
         file,
         fileContentName
       );
+      const existingFileContent = this.storageModel.read(fileContentPath);
+      if (existingFileContent != null) return;
       const stringifiedContent = stringify(fileContent);
       this.storageModel.write(fileContentPath, stringifiedContent);
     };
@@ -500,6 +503,13 @@
       const filePath = _FileModel.getFilePath(file.id);
       return [...filePath, fileContentName];
     };
+    static createFile = () => {
+      return {
+        dataVersion: DATA_VERSION,
+        id: v4_default(),
+        contentVersions: []
+      };
+    };
   };
 
   // src/Model/Utility/crypto.ts
@@ -757,7 +767,7 @@
     // utility
     static generateChatInfo = (primaryChannel) => {
       return {
-        dataVersion: "v2",
+        dataVersion: DATA_VERSION,
         primaryChannel,
         secondaryChannels: [],
         encryptionKey: "",
@@ -766,7 +776,7 @@
     };
     static createChatMessage = async (channel, sender, encryptionKey, body, file) => {
       const chatMessage = {
-        dataVersion: "v2",
+        dataVersion: DATA_VERSION,
         id: v4_default(),
         channel,
         sender,