Convert a haxe.io.BytesBuffer to js.html.ArrayBuffer

ByteBufferConverter.hx

package com.thomasuster.js;
import js.html.Blob;
import haxe.io.Bytes;
import haxe.io.BytesBuffer;
import js.html.ArrayBuffer;
import js.html.DataView;
class ByteBufferConverter {
    
    public function new():Void {}

    public function toArrayBuffer(bb:BytesBuffer):ArrayBuffer {
        var bytes:Bytes = bb.getBytes();
        var buffer:ArrayBuffer = new ArrayBuffer(bytes.length);
        var view:DataView = new DataView(buffer, 0, buffer.byteLength);
        for (i in 0...bytes.length) {
            view.setUint8(i, bytes.get(i));
        }
        return buffer;
    }
}