medusa-store/packages/medusa-dev-cli/src/local-npm-registry/index.js

const startVerdaccio = require(`verdaccio`).default;

const fs = require(`fs-extra`);
const _ = require(`lodash`);

let VerdaccioInitPromise = null;

const { verdaccioConfig } = require(`./verdaccio-config`);
const { publishPackage } = require(`./publish-package`);
const { installPackages } = require(`./install-packages`);

const startServer = () => {
  if (VerdaccioInitPromise) {
    return VerdaccioInitPromise;
  }

  console.log(`Starting local verdaccio server`);

  // clear storage
  fs.removeSync(verdaccioConfig.storage);

  VerdaccioInitPromise = new Promise((resolve) => {
    startVerdaccio(
      verdaccioConfig,
      verdaccioConfig.port,
      verdaccioConfig.storage,
      `1.0.0`,
      `medusa-dev`,
      (webServer, addr, pkgName, pkgVersion) => {
        // console.log(webServer)
        webServer.listen(addr.port || addr.path, addr.host, () => {
          console.log(`Started local verdaccio server`);

          resolve();
        });
      }
    );
  });

  return VerdaccioInitPromise;
};

exports.startVerdaccio = startServer;

exports.publishPackagesLocallyAndInstall = async ({
  packagesToPublish,
  localPackages,
  root,
  ignorePackageJSONChanges,
  yarnWorkspaceRoot,
}) => {
  await startServer();

  const versionPostFix = Date.now();

  const newlyPublishedPackageVersions = {};

  for (const packageName of packagesToPublish) {
    newlyPublishedPackageVersions[packageName] = await publishPackage({
      packageName,
      packagesToPublish,
      root,
      versionPostFix,
      ignorePackageJSONChanges,
    });
  }

  const packagesToInstall = _.intersection(packagesToPublish, localPackages);

  await installPackages({
    packagesToInstall,
    yarnWorkspaceRoot,
    newlyPublishedPackageVersions,
  });
};