I found Firefox very inefficient when working with large file says a 2GB file. It doesn't have filesystem api like Chrome does. There is no ability to do low-le

I found Firefox very inefficient when working with large file says a 2GB file. It doesn't have filesystem api like Chrome does. There is no ability to do low-level create, read, update and delete (CRUD) file operations. For example, you cannot write bytes in the end of a file and continues to grow it. IndexedDB only allows adding and removing whole files. As the file size get big, the inefficient file handling will cause Firefox to run out of offline storage and the processing time will get longer exponentially as the file size increases. Speed improvements are good, but the lack of basic features is what kills Firefox. It is not ready for heavy duty web app.