export default function urlB64ToUint8Array(base64String: string) { const padding = "=".repeat((4 - (base64String.length % 4)) % 4) const base64 = (base64String + padding).replace(/\-/g, "+").replace(/_/g, "/") const rawData = atob(base64) const outputArray = new Uint8Array(rawData.length) for (let i = 0; i < rawData.length; ++i) { outputArray[i] = rawData.charCodeAt(i) } return outputArray }