commandarize.js

function commandarize(methods) {
  const args = process.argv.slice(2).map((arg) => {
    const isJson = /^\[.+\]$|^\{.+\}$/.test(arg);
    return isJson ? JSON.parse(arg) : arg;
  });

  const [methodName, ...params] = args;

  if (methodName) {
    const method =
      methods[methodName] || methods[methodName.replace(/^-*/, "")];

    if (!method) {
      return console.log(
        [
          "",
          `Method "${methodName}" does not exists! Existing methods are:`,
          ``,
          `${Object.keys(methods).join("\n")}`,
        ].join("\n")
      );
    }

    console.log(method(...params));
  } else {
    methods.default?.(...params);
  }
}