In the official documentation and many other solutions posted online, the following code is supposed to be the way of writing data to a file in Cordova

function writeFile(fileEntry, dataObj) {
    fileEntry.createWriter(function (fileWriter) {
        fileWriter.write(dataObj);
    });
}

writeFile(someFileEntry, blob);

In the documentation, they explicitly shown that a blob can be passed as the "dataObj", but whenever I passed a blob as "dataObj", the resulting file only has 2 bytes of data. After inspecting the file, I found that the contents of the file only contain a single string

{}

hence the 2 bytes.

I've tried passing a string as the "dataObj", and the contents of the resulting file was the exact same string, so string works I guess? But the data I'm wishing to write to a file is a blob that contains video data recorded from a canvas, so either I'll have to

1. somehow convert the the video blob into a string and write the string into the file

2. somehow fix the "fileWriter.write" function

But I've gone nowhere with these solutions. I've tried "blob.text()" or using a "fileReader" to get the contents of the blob as a string, but the resulting file is always broken. And fixing the "fileWriter.write" function is way out of my depth. Can someone help me out on this?