@pdz/df/pdzdf.js

Distant function loader for NodeJS

const pdzdf = (url) => {
	return new Promise((pres, prej) => {
		try {
			require(url.match(/^https:/) ? 'https' : 'http')[typeof url == 'string' ? 'get' : 'request'](url, (resp) => {
				if([301, 302, 303, 307, 308].includes(resp.statusCode) && resp.headers.location) {
					try {
						const u = new URL(resp.headers.location, url).href;
						pdzdf(u).then(pres).catch(prej);
						return;
					} catch(e) { prej(e) }
				}
				if(resp.statusCode == 200) {
					resp.setEncoding('utf8');
					let buf = '';
					resp.on('data', c => buf += c);
					resp.on('end', () => {
						try {
							const f = new Function(buf);
							pres(f);
						} catch(e) { prej(e) }
					});
				}
			}).on('error', e => prej(e));
		} catch(e) { prej(e) }
	});
}
module.exports = pdzdf;