import { base64ToBin } from "https://deno.land/x/libauth@v2.0.0-alpha.9/src/lib/format/base64.ts";
Convert a base64-encoded string to a Uint8Array.
Note, this method always completes. If validBase64 is not valid base64, an
incorrect result will be returned. If validBase64 is potentially malformed,
check it with isBase64 before calling this method.