Uncaught ReferenceError: GitHub is not defined

Source code - "test.html":

```

var gh = new GitHub();

```

Chrome console output:

```
base64.js:89Uncaught SyntaxError: Invalid regular expression: /[À-ß][€-¿]|[à-ï][€-¿]{2}|[ð-÷][€-¿]{3}/: Range out of order in character class
at new RegExp ()
at base64.js:89
at Object.n.44.buffer (base64.js:194)
at o (_prelude.js:1)
at _prelude.js:1
at Object.n.9.axios (Requestable.js:10)
at o (_prelude.js:1)
at _prelude.js:1
at Object.n.1../Requestable (Gist.js:8)
at o (_prelude.js:1)
(anonymous) @ base64.js:89
n.44.buffer @ base64.js:194
o @ _prelude.js:1
(anonymous) @ _prelude.js:1
n.9.axios @ Requestable.js:10
o @ _prelude.js:1
(anonymous) @ _prelude.js:1
n.1../Requestable @ Gist.js:8
o @ _prelude.js:1
(anonymous) @ _prelude.js:1
n.2../Gist @ GitHub.js:9
o @ _prelude.js:1
e @ _prelude.js:1
(anonymous) @ _prelude.js:1
(anonymous) @ _prelude.js:1
(anonymous) @ _prelude.js:1
test.html:6 Uncaught ReferenceError: GitHub is not defined
at test.html:6
(anonymous) @ test.html:6
```

EDITED TO ADD: Chrome Version 56.0.2924.87 (64-bit), OSX El Capitan 10.11.6