Base64 to Unit8Array

unit8arr-base64-converter.js

function base64ToUint8Array(base64String) {
    let raw = atob(base64String);
    let uint8Array = new Uint8Array(raw.length);
    for (let i = 0; i < raw.length; i++) {
      uint8Array[i] = raw.charCodeAt(i);
    }
    let pdfSrc = unit8Array;
    return pdfSrc;
}