import { fn } from "https://deno.land/x/dpp_vim@v0.2.0/deps.ts";
const { filewritable } = fn;
The result is a Number, which is 1 when a file with the name {file} exists, and can be written. If {file} doesn't exist, or is not writable, the result is 0. If {file} is a directory, and we can write to it, the result is 2.
Can also be used as a method:
GetName()->filewritable()