Async await nested deps

deps-await-part2.js

const fetch = require('node-fetch');

async function getDependencies(packageName) {
    const url = `https://registry.npmjs.org/${packageName}/latest`;
    try {
        const response = await fetch(url);
        const body = await response.json();
        return Array.from(Object.keys(body.dependencies));
    } catch (err) {
        return [];
    }
}

async function getAllDependencies(packageName) {
    const deps = await getDependencies(packageName);
    return Promise.all(deps.map(async dep => {
        return await getAllDependencies(dep);
    })).then(values => {
        return [...new Set([...deps].concat(...values))];
    });
}

getAllDependencies('forever').then(values => {
    console.log(values.length);
});