const contract = fileSystem.readFileSync("./contract.sol").toString("utf-8");
console.log(contract);

// output
contract StringContainer {

    string[] public listOfStrings;
    StringUtils utils = new StringUtils();


    function add(string memory newString) returns (bool success){

        for(uint index=0;index<listOfStrings.length;index++) {
            if(utils.equals(listOfStrings[index], newString)){
                return false;
            }
        }

        listOfStrings.push(newString);
        return true;
    }

}


contract StringUtils {

    function equals(string memory first,string memory second) constant returns (bool areEqual){
         bytes  memory bytesFirst =  bytes(first);
         bytes  memory bytesSecond = bytes(second);

        if(bytesFirst.length != bytesSecond.length){
            return false;
        } else {
            for (uint i = 0; i < bytesFirst.length; i++)
                        if (bytesFirst[i] != bytesSecond[i])
                                return false;
        }

        return true;
    }

}
Example app listening on port 3000!