For those who are not aware of it, nodemon is a tool that helps develop NodeJs based applications by automatically restarting the node application whe

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2021-06-27 02:30:05

For those who are not aware of it, nodemon is a tool that helps develop NodeJs based applications by automatically restarting the node application when file changes in the directory are detected. We can simply install it globally and use it throughout our system without making any additional changes to the code.

This is a really interesting Node and JavaScript developer interview question. It helps the interviewer to test your basics such as NodeJs stream, child process, events, debouncing etc.

In this article, we will create a simple Node.Js CLI (command line application) tool named as nodekeeper, similar to nodemon. So, let’s get started.

On a high level, the problem might seem very difficult to implement but it’s not. The main idea behind it is to create a CLI tool which will create a node child process for the given file and keep eyes on the files in the repo. If new changes are detected, just kill the child process and again create a new process.

So first, what is a CLI tool? CLI stands for ‘command line application’. It helps us run any command on the terminal which will do some magic with our system. For example - to run any JavaScript file NodeJs provides us with node CLI. We just have node index.js from the command line(terminal) and it executes the file. We can give commands just from the terminal.