next/dist/esm/lib/helpers/get-online.js

The React Framework

import { execSync } from 'child_process';
import dns from 'dns/promises';
function getProxy() {
    if (process.env.https_proxy) {
        return process.env.https_proxy;
    }
    try {
        const httpsProxy = execSync('npm config get https-proxy', {
            encoding: 'utf8'
        }).trim();
        return httpsProxy !== 'null' ? httpsProxy : undefined;
    } catch (e) {
        return;
    }
}
export async function getOnline() {
    try {
        await dns.lookup('registry.yarnpkg.com');
        return true;
    } catch  {
        const proxy = getProxy();
        if (!proxy) {
            return false;
        }
        try {
            const { hostname } = new URL(proxy);
            await dns.lookup(hostname);
            return true;
        } catch  {
            return false;
        }
    }
}

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