fart checksum calculator

fartsum.js

/*
Copyright © 2022 owocean

Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the “Software”),to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
Users of this software must be really nice to me and tell me I did a good job. Maybe give me a lil cookie. Pat me on my
soft little head and call me a good boy. That would be really nice.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

const fs = require('fs');

function calcsum(file) {
    let bytes = fs.readFileSync(file);
    let fart = 0;
    for (let byte of bytes) {
        fart = fart ^ byte;
    }
    return fart;
}

console.log(calcsum('fartsum.js'))

fart 👍