@quinaryio/react-native-ultimate-config/src/cli.js

Config that works

#!/usr/bin/env node

const yargs = require("yargs");
const path = require("path");
const fs = require("fs");
const main = require("./main");

module.exports = async function () {
  yargs.default("projectRoot", process.cwd());
  const project_root = yargs.argv.projectRoot;
  yargs.default(
    "libRoot",
    path.join(
      project_root,
      "node_modules",
      "@quinaryio/react-native-ultimate-config"
    )
  );
  const lib_root = yargs.argv.libRoot;

  const env_file = yargs.argv._[0];

  const rc_file = path.resolve(project_root, ".rnucrc.js");
  if (fs.existsSync(rc_file)) {
    const rc = require(rc_file);
    await main(project_root, lib_root, env_file, rc);
  } else {
    await main(project_root, lib_root, env_file);
  }
};