Load array buffer via XMLHttpRequest, the old good way

array-buffer-XMLHttpRequest.ts

function ab2str(buf: any) {
  return Buffer.from(buf).toString("utf8");
}

console.log("hello");
var oReq = new XMLHttpRequest();
console.log(oReq);
oReq.addEventListener("load", reqListener);
oReq.open("GET", "./test.env");
oReq.responseType = "arraybuffer";
oReq.send();

function reqListener(responseText: any) {
  console.log("load", responseText);
  console.log("array buffer:", ab2str(oReq.response), ".");
}