in src/lib/utils.ts [65:72]
export function base64ToArrayBuffer(base64: string) {
var binaryString = atob(base64);
var bytes = new Uint8Array(binaryString.length);
for (let i = 0; i < binaryString.length; i++) {
bytes[i] = binaryString.charCodeAt(i);
}
return bytes.buffer;
}