1. Compiling TypeScript Files

Use the command

tsc fileSystem.ts log.ts logger.ts loggerClass.ts

• To compile the 4 TypeScript files into JavaScript files.

2. Logging Message

There are two ways to record log messages:

2.1 Automatic logging:

Run the node logger.js

• the script will listen to the terminal input and You may INSERT the terminal command like normal way.
• automatically record the error messages to the LOG.txt file.

2.2 Manual logging:

• Run the sample

node log.js 1 Here is the log message i want to mark.

• The command recods manually the log message to the LOG.txt file.
• Params[2] is a number type. Please refer to the log message levels.

3 Log message levels:

Verbose = 1 Info = 2 Warning = 3 Error = 4

Total time: 8.5hrs