tio.js

#!/usr/bin/env node

var cheddar = require('cheddar-lang');
var api = cheddar.stdlib;

// Enable Cheddar safe mode
global.SAFE_MODE = true;

// Print function
var printed = false;

function print(text) {
    printed = true;
    process.stdout.write(text);
}

// Get the default return
var res = cheddar(process.argv[2], {
    PRINT: print
});

// Check if function was returned
if (res instanceof api.func) {
    var args = process.argv.slice(3).map(function(arg) {
        // Convert it to a Cheddar string
        var str = api.init(api.string, arg);

        // Attempt to convert to number
        var castattempt = api.string.Cast.get("Number")(str);
        if (castattempt instanceof api.number) {
            return castattempt;
        }
        else {
            return str;
        }
    });

    // Call it with input
    res = res.exec(args, null);
}

if (printed === false) {
    ( res.constructor.Operator || res.Operator ).get("print")(null, res);
}