update_dependencies.js

const fs = require('fs').promises;
const path = require('path');
const got = require('got');
const prompts = require('prompts');
const util = require('util');
const exec = util.promisify(require('child_process').exec);

let updateCount = 0;

const dirs = ['var', 'lib', 'www'];

const pkgs = {
    combined: require(path.join(__dirname, 'package.json'))
};

dirs.forEach(dir => {
    pkgs[dir] = require(path.join(__dirname, 'addon_files/redmatic', dir, 'package.json'));
});

async function compareVersions(dir) {
    const pkgJson = pkgs[dir];
    const dependencies = pkgJson.dependencies;
    for (const pkg in dependencies) {
        let json;
        try {
            json = await got(`https://registry.npmjs.org/${pkg}`, {
                responseType: 'json'
            });
        } catch (error) {
            console.error(pkg, error.message);
        }

        if (json) {
            const actual = dependencies[pkg];
            const latest = json.body['dist-tags'].latest;
            if (actual !== latest) {
                const response = await prompts({
                    type: 'confirm',
                    name: 'confirmed',
                    message: `update ${pkg} ${actual} to ${latest}?`
                });
                if (response.confirmed) {
                    dependencies[pkg] = latest;
                    pkgs.combined.dependencies[pkg] = `0.0.0 - ${latest}`;
                    const file = path.join('addon_files/redmatic', dir, 'package.json')
                    await fs.writeFile(path.join(__dirname, 'package.json'), JSON.stringify(pkgs.combined, null, '  '));
                    await fs.writeFile(path.join(__dirname, file), JSON.stringify(pkgs[dir], null, '  '));
                    let changelog = '';
                    switch (pkg) {
                        case 'node-red':
                            changelog = ' ([Changelog](https://github.com/node-red/node-red/blob/master/CHANGELOG.md))';
                            break;
                        case 'node-red-dashboard':
                            changelog = ' ([Changelog](https://github.com/node-red/node-red-dashboard/blob/master/CHANGELOG.md))';
                            break;
                        default:
                    }
                    const {stdout, stderr} = await exec(`git commit package.json ${file} -m 'update ${pkg} ${actual} to ${latest}${changelog}'`);
                    console.log(stderr, stdout);
                    updateCount += 1;
                }
            }

        }
    }

}
async function checkDirs() {
    for (dir of dirs) {
        await compareVersions(dir);
    }
    if (updateCount === 0) {
        console.log('all dependencies are up to date :)');
    }
    console.log('');
}

checkDirs();