Winston for application logging in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Winston in an Express app.

Express

const winston = require('[1]');

Drag options to blanks, or click blank then click option'

Awinston

Bexpress

Cmorgan

Dhttp

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'express' instead of 'winston' in require.

Confusing with 'morgan' which is another logger.

Winston is imported by requiring the 'winston' package.

2fill in blank

medium

Complete the code to create a Winston logger with console transport.

Express

const logger = winston.createLogger({ transports: [new winston.transports.[1]()] });

Drag options to blanks, or click blank then click option'

AFile

BHttp

CStream

DConsole

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'File' transport without specifying filename.

Using 'Http' transport which sends logs over HTTP.

The Console transport sends logs to the console (terminal).

3fill in blank

hard

Fix the error in the code to log an info message using Winston.

Express

logger.[1]('Server started successfully');

Drag options to blanks, or click blank then click option'

Ainfo

Bprint

Cwrite

Dlog

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'print' which is not a Winston method.

Using 'write' which is not a method on logger.

The 'info' method logs an informational message in Winston.

4fill in blank

hard

Fill both blanks to configure Winston to log errors to a file named 'error.log'.

Express

const logger = winston.createLogger({ transports: [new winston.transports.[1]({ filename: '[2]' })] });

Drag options to blanks, or click blank then click option'

AFile

BConsole

Cerror.log

Dcombined.log

Attempts:

3 left

💡 Hint

Common Mistakes

Using Console transport with filename option (ignored).

Using wrong filename like 'combined.log' for error logs.

The File transport writes logs to a file. Here, the file is 'error.log'.

5fill in blank

hard

Fill all three blanks to create a logger that logs info level to console and errors to 'error.log' file.

Express

const logger = winston.createLogger({ level: '[1]', transports: [new winston.transports.[2](), new winston.transports.[3]({ filename: 'error.log', level: 'error' })] });

Drag options to blanks, or click blank then click option'

Ainfo

BConsole

CFile

Ddebug

Attempts:

3 left

💡 Hint

Common Mistakes

Setting level to 'debug' which logs too much.

Using Console transport for file logging.

The logger's default level is 'info'. Console transport logs info and above. File transport logs errors to 'error.log'.