Download all schemas of schemastore.org

index.js

const url = 'https://www.schemastore.org/api/json/catalog.json';
const https = require('https');
fs = require('fs');
const directory = 'schemas';

const downloadFile = (url) => {
    return new Promise((resolve, reject) => {
        https.get(url, (resp) => {
            let html = '';

            // A chunk of data has been received.
            resp.on('data', (chunk) => {
                html += chunk;
            });
            // The whole response has been received. Print out the result.
            resp.on('end', () => {
                resolve(html);
            });
        }).on("error", (err) => {
            console.log("Error: " + err.message);
        });
    });
}

const saveFile = (fileName, file) => {
    fs.writeFile(`${directory}/${fileName}`, file, (err) => {
        if (err) {
            return console.error(err);
        }
        console.log(`file: ${fileName} saved`);
    });
}

const downloadAndSaveSchemas = (schemas) => {
    schemas.forEach(schema => {
        downloadFile(schema.url).then((file) => saveFile(schema.name, file));
    });
}

downloadFile(url).then((html) => {
    const json = JSON.parse(html);
    console.log(json.schemas)
    const schemas = json.schemas.map(s => {
        return {
            url: s.url,
            name: s.name
        }
    });
    downloadAndSaveSchemas(schemas);
});