injecting response into functions

var sendHTMLToBrowser = require("../myCode/andrewsHelpers").sendHTMLToBrowser;
//var execExternalCommand = require("./childProcesses").execExternalCommand;
// import the exec function defined on the child_process module
var exec = require('child_process').exec;

function start(response, request) {
    console.log("Request handler 'start' was called");

    var body = '<!doctype html>'+
        '<html lang="en">'+
        '<head>'+
        '<meta charset=UTF-8" />'+
        '</head>'+
        '<body>'+
        '<p>Hello Andrew :)</p>'+
        '</body>'+
        '</html>';

    sendHTMLToBrowser(response, body);
}

function linecount(response, request) {
    console.log("Request handler 'linecount' was called.");

    // launch the command "cat *.js | wc -l"
    exec('cat *.js | wc -l', function(err, stdout, stderr) {
        // the command exited or the launching failed
        if (err) {
            // we had an error launching the process
            console.log('child process exited with error code', err.code);
            return;
        }
        sendHTMLToBrowser(response, stdout.toString());
    });
}

function executeCommand(command) {

    return result;
}

exports.start = start;
exports.linecount = linecount;