life_saver_01.js

const readline 	= require('readline');
const roundTo 	= require('round-to');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

function printHelpMessage(){
	console.log("<<--COMMANDS-->>");
	console.log("<time_command_output>");
	console.log("exit");
}

function getLineInput(callback){
	rl.question('>>>', callback);
}

function parseUserInput(answer) {
	var tokenizedAnswer = answer.split("m");
	var minutes = tokenizedAnswer[0];
	
	if(tokenizedAnswer[0] == "exit") process.exit(0);
	
	if(tokenizedAnswer[1]) {
		var tokenizedAnswerSeconds = tokenizedAnswer[1].split("s");
		var seconds = tokenizedAnswerSeconds[0];
		if(tokenizedAnswerSeconds[0]) {
			console.log("mins: "+minutes);
			const minutesToSeconds = parseInt(minutes)*60;
				console.log("Minutes in seconds:"+minutesToSeconds);
			console.log("seconds: "+seconds);
			const roundedSeconds = roundTo(parseFloat(seconds), 1);
			console.log("rounded seconds: "+roundedSeconds);
			console.log("Total Seconds: "+(minutesToSeconds+roundedSeconds));
		} else {
			console.log("invalid input");
		}
	} else {
		console.log("invalid input");
	}

	getLineInput(parseUserInput);
}

printHelpMessage();
getLineInput(parseUserInput);