Use postcss from deno

postcsstest.js

import autoprefixer from "https://jspm.dev/autoprefixer";
import postcss from "https://jspm.dev/postcss";

postcss().use(autoprefixer).process(".something { appearance: none; }", {
    from: undefined
}).then(f => {
    console.log(f.css);
})

run.sh

#!/bin/bash
deno run .\postcsstest.js

# Should output this:
# .something { -webkit-appearance: none; -moz-appearance: none; appearance: none; }