eyeofmidas.com/htdocs/js/GameDecider.js

if(MIDAS == undefined) {
	var MIDAS = {};
}
MIDAS.GameDecider = function(gameConsole, inputParser, gameState) {
	var self = this;

	this.decide = function(message) {
        var gameCommands = gameState.getCommandList();
        var gameDescriptions = gameState.getCommandDescriptions();
		var commandObject = inputParser.parse(message, gameCommands);
		console.log(commandObject);
		if(commandObject.error) {
            if (commandObject.errorMessage == "help") {
                 gameConsole.output("The commands available to you are:");
            gameConsole.output("----------------------------------");
                gameConsole.output("help - Lists all possible commands");
            for(var i = 0; i < gameCommands.length; i++) {
                gameConsole.output(gameCommands[i] + " - " + gameDescriptions[i]);
            }
            gameConsole.output("----------------------------------");
            } else {
			    gameConsole.output("I don't understand \"" + commandObject.errorMessage + "\".");
            }
		} else {
            gameState.handleCommandInput(commandObject);
        }
	};
};