diff --git a/examples/enable_twofactor.js b/examples/enable_twofactor.js
index cec250d..60495a8 100644
--- a/examples/enable_twofactor.js
+++ b/examples/enable_twofactor.js
@@ -1,45 +1,49 @@
-var SteamCommunity = require('../index.js');
-var ReadLine = require('readline');
-var fs = require('fs');
+// If you aren't running this script inside of the repository, replace the following line with:
+// const SteamCommunity = require('steamcommunity');
+const SteamCommunity = require('../index.js');
+const ReadLine = require('readline');
+const FS = require('fs');
 
-var community = new SteamCommunity();
-var rl = ReadLine.createInterface({
-	"input": process.stdin,
-	"output": process.stdout
+const EResult = SteamCommunity.EResult;
+
+let community = new SteamCommunity();
+let rl = ReadLine.createInterface({
+	input: process.stdin,
+	output: process.stdout
 });
 
-rl.question("Username: ", function(accountName) {
-	rl.question("Password: ", function(password) {
+rl.question('Username: ', (accountName) => {
+	rl.question('Password: ', (password) => {
 		doLogin(accountName, password);
 	});
 });
 
 function doLogin(accountName, password, authCode, captcha) {
 	community.login({
-		"accountName": accountName,
-		"password": password,
-		"authCode": authCode,
-		"captcha": captcha
-	}, function(err, sessionID, cookies, steamguard) {
-		if(err) {
-			if(err.message == 'SteamGuardMobile') {
-				console.log("This account already has two-factor authentication enabled.");
+		accountName: accountName,
+		password: password,
+		authCode: authCode,
+		captcha: captcha
+	}, (err, sessionID, cookies, steamguard) => {
+		if (err) {
+			if (err.message == 'SteamGuardMobile') {
+				console.log('This account already has two-factor authentication enabled.');
 				process.exit();
 				return;
 			}
 
-			if(err.message == 'SteamGuard') {
-				console.log("An email has been sent to your address at " + err.emaildomain);
-				rl.question("Steam Guard Code: ", function (code) {
+			if (err.message == 'SteamGuard') {
+				console.log(`An email has been sent to your address at ${err.emaildomain}`);
+				rl.question('Steam Guard Code: ',  (code) => {
 					doLogin(accountName, password, code);
 				});
 
 				return;
 			}
 
-			if(err.message == 'CAPTCHA') {
+			if (err.message == 'CAPTCHA') {
 				console.log(err.captchaurl);
-				rl.question("CAPTCHA: ", function(captchaInput) {
+				rl.question('CAPTCHA: ', (captchaInput) => {
 					doLogin(accountName, password, authCode, captchaInput);
 				});
 
@@ -51,17 +55,17 @@ function doLogin(accountName, password, authCode, captcha) {
 			return;
 		}
 
-		console.log("Logged on!");
-		community.enableTwoFactor(function(err, response) {
-			if(err) {
-				if(err.eresult == 2) {
-					console.log("Error: Failed to enable two-factor authentication. Do you have a phone number attached to your account?");
+		console.log('Logged on!');
+		community.enableTwoFactor((err, response) => {
+			if (err) {
+				if (err.eresult == EResult.Fail) {
+					console.log('Error: Failed to enable two-factor authentication. Do you have a phone number attached to your account?');
 					process.exit();
 					return;
 				}
 
-				if(err.eresult == 84) {
-					console.log("Error: RateLimitExceeded. Try again later.");
+				if (err.eresult == EResult.RateLimitExceeded) {
+					console.log('Error: RateLimitExceeded. Try again later.');
 					process.exit();
 					return;
 				}
@@ -71,15 +75,16 @@ function doLogin(accountName, password, authCode, captcha) {
 				return;
 			}
 
-			if(response.status != 1) {
-				console.log("Error: Status " + response.status);
+			if (response.status != EResult.OK) {
+				console.log(`Error: Status ${response.status}`);
 				process.exit();
 				return;
 			}
 
-			console.log("Writing secrets to twofactor_" + community.steamID.getSteamID64() + ".json");
-			console.log("Revocation code: " + response.revocation_code);
-			fs.writeFileSync("twofactor_" + community.steamID.getSteamID64() + ".json", JSON.stringify(response, null, "\t"));
+			let filename = `twofactor_${community.steamID.getSteamID64()}.json`;
+			console.log(`Writing secrets to ${filename}`);
+			console.log(`Revocation code: ${response.revocation_code}`);
+			FS.writeFileSync(filename, JSON.stringify(response, null, '\t'));
 
 			promptActivationCode(response);
 		});
@@ -87,10 +92,10 @@ function doLogin(accountName, password, authCode, captcha) {
 }
 
 function promptActivationCode(response) {
-	rl.question("SMS Code: ", function(smsCode) {
-		community.finalizeTwoFactor(response.shared_secret, smsCode, function(err) {
-			if(err) {
-				if(err.message == "Invalid activation code") {
+	rl.question('SMS Code: ', (smsCode) => {
+		community.finalizeTwoFactor(response.shared_secret, smsCode, (err) => {
+			if (err) {
+				if (err.message == 'Invalid activation code') {
 					console.log(err);
 					promptActivationCode(response);
 					return;
@@ -98,7 +103,7 @@ function promptActivationCode(response) {
 
 				console.log(err);
 			} else {
-				console.log("Two-factor authentication enabled!");
+				console.log('Two-factor authentication enabled!');
 			}
 
 			process.exit();