Let's Build a Todo CLI With Node.JS - Part Two

In this second lesson in the Let's Build a Todo CLI With Node.JS series, you will be working with the filesystem module to read and write files to the todos JSON file. The JSON file will act as a database for storing, retrieving, and deleting todos. 

Learning Objectives

• How to require the read and write methods from the Node filesystem promise module
• Explain the path module’s __dirname argument
• Understand how to use a JSON file as a database
• Understand the purpose of using the filesystem promise module
• Implement functions to read and write to the JSON file
• Implement handler functions to invoke the read/write functions.
• Understand the coding practice to create a separation of concerns between handler functions and module methods
• Explain how to export functions through the use of the Node CommonJS system
• Understand how to use exported functions in another file

Intended Audience

This lesson is intended for anyone who wants to learn about Node.js.

Prerequisites

• Introduction to Node.js - What Is a Node Module and Non-Blocking I/O
• Introduction to Node.js - CommonJS Modules
• Let's Build a Todo CLI With Node.JS - Part One