Node.js is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code outside of a browser.

Following example will read file content of data.json file and convert it into object. __dirname is root folder of your project. 

//index.js
const fs = require('fs'); //filesystem module

const json = fs.readFileSync(`${__dirname}/data/data.json`, 'utf-8');
const laptopData = JSON.parse(json);

console.log(laptopData);
//data/data.json
[
    {
        "id": "0",
        "productName": "Huawei MateBook X Pro",
        "image": "huawei-matebook-pro.jpg",
        "cpu": "Intel Core i7, 8th generation",
        "ram": "8GB",
        "storage": "512 GB SSD",
        "screen": "13.9-inch, 3K (3,000 x 2,080)",
        "price": "1499",
        "description": "The Huawei MateBook X Pro is our pick for the best laptop money can buy in 2018. This is a gorgeously-designed laptop with a stunning screen (albeit with a rather odd aspect ratio), and it comes packed with cutting edge components that allows it to perform brilliantly, and a battery life that runs rings around many of its rivals. It also has a very competitive price, giving you features, design and performance for quite a bit less money."
    }
]



Final example with created server and routing

//index.js
const fs = require('fs');
const http = require('http');
const url = require('url');

const json = fs.readFileSync(`${__dirname}/data/data.json`, 'utf-8');
const laptopData = JSON.parse(json);

const server = http.createServer((req, res) => {
    
    const pathName = url.parse(req.url, true).pathname;
    const id = url.parse(req.url, true).query.id;
    
    // PRODUCTS OVERVIEW
    if (pathName === '/products' || pathName === '/') {
        res.writeHead(200, { 'Content-type': 'text/html'});
        
        fs.readFile(`${__dirname}/templates/template-overview.html`, 'utf-8', (err, data) => {
            let overviewOutput = data;
            
            fs.readFile(`${__dirname}/templates/template-card.html`, 'utf-8', (err, data) => {
            
                const cardsOutput = laptopData.map(el => replaceTemplate(data, el)).join('');
                overviewOutput = overviewOutput.replace('%CARDS%', cardsOutput); 
                
                res.end(overviewOutput);
            });
        });
        
        
    }
    
    // LAPTOP DETAIL
    else if (pathName === '/laptop' && id < laptopData.length) {
        res.writeHead(200, { 'Content-type': 'text/html'});
        
        fs.readFile(`${__dirname}/templates/template-laptop.html`, 'utf-8', (err, data) => {
            const laptop = laptopData[id];
            const output = replaceTemplate(data, laptop);
            res.end(output);
        });
    }
    
    // IMAGES
    else if ((/\.(jpg|jpeg|png|gif)$/i).test(pathName)) {
        fs.readFile(`${__dirname}/data/img${pathName}`, (err, data) => {
            res.writeHead(200, { 'Content-type': 'image/jpg'});
            res.end(data);
        });
    }
    
    // URL NOT FOUND
    else {
        res.writeHead(404, { 'Content-type': 'text/html'});
        res.end('URL was not found on the server!');
    }
    
});

server.listen(1337, '127.0.0.1', () => {
    console.log('Listening for requests now');
});

function replaceTemplate(originalHtml, laptop) {
    let output = originalHtml.replace(/%PRODUCTNAME%/g, laptop.productName);
    output = output.replace(/%IMAGE%/g, laptop.image);
    output = output.replace(/%PRICE%/g, laptop.price);
    output = output.replace(/%SCREEN%/g, laptop.screen);
    output = output.replace(/%CPU%/g, laptop.cpu);
    output = output.replace(/%STORAGE%/g, laptop.storage);
    output = output.replace(/%RAM%/g, laptop.ram);
    output = output.replace(/%DESCRIPTION%/g, laptop.description);
    output = output.replace(/%ID%/g, laptop.id);
    return output;
}