Node2Know — File System: fs (Promises)

A minimal Node.js HTTP server that reads HTML partials from disk using the core fs module.

This repo introduces:

• fs.promises.readFile() (promise-based file I/O)
• serving HTML from Node’s core http server
• “partials” (reusable HTML snippets)
• Promise.all() to load multiple files

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✅ Prereqs

• Node.js installed (includes node)

Verify:

node -v

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📄 What's in this repo?

• server.js — HTTP server that loads partials/header.html and partials/footer.html
• partials/header.html — reusable header snippet
• partials/footer.html — reusable footer snippet

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▶️ Run the server

From the project folder:

npm run start

You should see:

Server running at http://127.0.0.1:3000/

Then visit:

• http://127.0.0.1:3000/

If the files load successfully, your terminal will log:

Partials loaded successfully.

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👀 Run with watch mode

npm run watch

Now edit partials/header.html or partials/footer.html, save, and refresh your browser to see the change.

Stop the server with:

• Ctrl + C

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🧠 What the code demonstrates

1) Requisition fs.promises

const fs = require("fs").promises;

2) Build file paths using __dirname

const headerPath = __dirname + "/partials/header.html";

__dirname points to the folder containing server.js, which keeps your paths stable even if you run Node from a different working directory.

3) Load multiple files with Promise.all

Promise.all([fs.readFile(headerPath), fs.readFile(footerPath)])

• Runs both reads at the same time
• Resolves when both are complete
• Rejects if either one fails

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📁 Project Structure

.
├── package.json
├── server.js
├── partials/
│   ├── header.html
│   └── footer.html
└── README.md

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Repo

• https://github.com/ProfessorSolo/Node2Know-FileSystemFS.git

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License

Node2Know-Learn-1.0 (see LICENSE).