global.Buffer = global.Buffer || require('buffer').Buffer;
if (typeof btoa === 'undefined') {
global.btoa = function (str) {
return new Buffer.from(str).toString('base64');
};
}
if (typeof atob === 'undefined') {
global.atob = function (b64Encoded) {
return new Buffer.from(b64Encoded, 'base64').toString();
};
}