Proxy-checker in Node.js @ made by Jas the 23/12/2021 finished the 24/12/2021 (updated the 04/01/2022).

$ wget https://raw.githubusercontent.com/pwnjas/proxychecker/main/proxychecker.js; npm i checker-proxy request path; node proxychecker.js 

Usage:
      node proxychecker.js [PROXY LIST TO FILTERING] [TYPE OF PROXY (SOCKS4, HTTP, HTTPS)] [OUTPUT FILE] [TIMEOUT (in ms)]
Example: 
      node proxychecker.js proxynofilter.txt http proxys.txt 1

In the script the green color meaning that the checker found a good proxys.
"Out checked: 44/89 - 31/89 valid proxies"
The code checked 44 proxies on 89 proxies, in the final file we have 31 good valid proxies.