Kata-nodeJS

Problem description 🚩

The problem consists in extracting data from a JSON file too big to be parsed / hold in memory as a whole.

The file is a valid JSON file, consisting in an array of objects. The structure of objects is not known, apart from the fact that they have an id and a name attributes.

The formatting of the file is not known: it may be a single line file, or formatted using a variety of whitespace options.

The problem consists in writing a Node.js program which must:

• accept an id as a command-line argument
• log to the console the name attribute of the object with the corresponding id.

To simulate low memory constraints, your program should work with node --max_old_space_size=50

> node --max_old_space_size=50 solution.js 62359
Damon Jerde // logged to the console

Get started 🎉

Clone the repository:

git clone https://github.com/av1m/kata-nodejs.git
cd kata-nodejs

Install the dependencies:

npm ci

Run the application 🏃

You can run the application with a predefined search:

npm start

If you want to specify the search, you can use the following command (for example):

# npm run search <number>
npm run search 10 # Search the id 10

Docker 📦

You can run the application with docker-compose:

docker-compose up -d
docker exec -it kata-nodejs npm run start
# Or if you want to search the person that have the id 10
docker exec -it kata-nodejs npm run search 10

Don't forget to stop your container:

docker-compose down

CLI ⌨️

The CLI can be found in the cli.js file. A library (such as commander, oclif) has not been used because it's a really simple CLI and it doesn't unnecessarily increase the code (and depending on a library etc.)