I was studying Blobs, and I noticed that when you have an ArrayBuffer, you can easily convert this to a Blob as follows:
var dataView = new DataView(arrayBuffer);
var blob = new Blob([dataView], { type: mimeString });
The question I have now is, is it possible to go from a Blob to an ArrayBuffer?
The Response API consumes a (immutable) Blob from which the data can be retrieved in several ways. The OP only asked for ArrayBuffer, and here's a demonstration of it.
var blob = GetABlobSomehow();
// NOTE: you will need to wrap this up in a async block first.
/* Use the await keyword to wait for the Promise to resolve */
await new Response(blob).arrayBuffer(); //=> <ArrayBuffer>
alternatively you could use this:
new Response(blob).arrayBuffer()
.then(/* <function> */);
Note: This API isn't compatible with older (ancient) browsers so take a look to the Browser Compatibility Table to be on the safe side ;)
