Really simple and naive nodejs args parsing

server.js

const parseArgs = (args, parsers) =>
  Object.assign(
    {},
    ...parsers.map(parser => {
      const parsed = Object.assign(
        {},
        ...args.map(arg => {
          const parsed = arg.match(parser);
          return (parsed && parsed.groups) || {};
        })
      );

      return parsed || {};
    })
  );

const parsedArgs = parseArgs(process.argv, [
  /--host=(?<host>[^\s]+)/,
  /--port=(?<port>[0-9]+)/
]);

const host = parsedArgs.host || "localhost";
const port = parsedArgs.port || "port";