make me api for whois in javascript

To create an API for whois in JavaScript, you can use Node.js along with a package like whois.

First, you need to initialize a Node.js project using npm:

npm init -y
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Then, you need to install the whois package:

npm install whois
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Next, you can create your API using the following code snippet:

index.tsx
const express = require('express');
const app = express();
const whois = require('whois');

app.get('/whois', (req, res) => {
    const { domain } = req.query;

    whois.lookup(domain, (err, data) => {
        if (err) {
            res.status(400).json({ error: 'Error fetching WHOIS information' });
        } else {
            res.json({ whois_data: data });
        }
    });
});

const PORT = 3000;
app.listen(PORT, () => {
    console.log(`Server is running on http://localhost:${PORT}`);
});
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In this code:

• We use the express package to create a simple web server.
• When a GET request is made to /whois endpoint with a query parameter domain, it fetches the WHOIS information for that domain using the whois package.
• It then responds with the WHOIS data or an error if there was a problem.

You can Run this API using:

node yourfilename.js
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Remember to replace yourfilename.js with the name of your JavaScript file.

Make sure to add error handling, validation, and potentially rate limiting based on your requirements.

Please note that building a publicly accessible WHOIS API may have legal implications, so make sure you have the right to provide this information.