A base64url encoder and decoder.
It encodes and decodes using the base64url alphabet, decodes using both the base64 and base64url alphabets, does not allow invalid characters and requires padding.
Examples:
var encoded = base64Url.encode([0x62, 0x6c, 0xc3, 0xa5, 0x62, 0xc3, 0xa6, 0x72, 0x67, 0x72, 0xc3, 0xb8, 0x64]); var decoded = base64Url.decode("YmzDpWLDpnJncsO4ZAo=");
const Base64Codec base64Url = const Base64Codec.urlSafe()
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-convert/base64Url-constant.html