Promise API to turn a Blob into an ArrayBuffer
npm install blob-to-arraybufferBlob into an ArrayBuffer```
$ npm install --save blob-to-arraybuffer
` javascript
const blobToArrayBuffer = require("blob-to-arraybuffer");
blobToArrayBuffer(blob).then(buffer => {
// hurrah!
});
`
` javascript
fetch("file.dat")
.then(res => res.blob)
.then(blobToArrayBuffer)
.then(buffer => {
});
``