const { isProxy, dropIp, checkIp, openFile } = require('npm-layer7-protections');
  openFile('IP2PROXY_DATABASE_FILE.bin')
    .then(() => {
      return isProxy(IP);
    })
    .then(() => {
      return dropIp(IP);
    })
    .then(() => {
      console.log('Success');
    })
    .catch(() => {
      console.log('Error');
    });
checkIp(IP, 'IP2PROXY_DATABASE_FILE.bin'); // checkIp uses both modules: isProxy and dropIp