import { io } from "https://deno.land/x/denoexec@v1.1.5/deps.ts";
const { Buffer } = io;
Returns a slice holding the unread portion of the buffer.
The slice is valid for use only until the next buffer modification (that
is, only until the next call to a method like read(), write(),
reset(), or truncate()). If options.copy is false the slice aliases the buffer content at
least until the next buffer modification, so immediate changes to the
slice will affect the result of future reads.