import { type Code } from "https://deno.land/x/dendron_exports@v0.2.2/deps/micromark.ts";
A character code.
This is often the same as what String#charCodeAt() yields but micromark
adds meaning to certain other values.
null represents the end of the input stream (called eof).
Negative integers are used instead of certain sequences of characters (such
as line endings and tabs).