Function pmFromUserAgent

packages/utils/core-utils/src/package-manager.ts:61–73

* Parses the `npm_config_user_agent` environment variable and returns its name and version. * * Code taken from https://github.com/zkochan/packages/tree/main/which-pm-runs/ | which-pm-runs.

()

 * Code taken from {@link https://github.com/zkochan/packages/tree/main/which-pm-runs/ | which-pm-runs}.
 */
function pmFromUserAgent() {
  const userAgent = process.env.npm_config_user_agent;
  if (!userAgent) {
    return undefined;
  }
  const pmSpec = userAgent.split(' ', 1)[0];
  const separatorPos = pmSpec.lastIndexOf('/');
  const name = pmSpec.substring(0, separatorPos);
  return {
    name: name === 'npminstall' ? 'cnpm' : name,
    version: pmSpec.substring(separatorPos + 1),
  };
}

/**
 * Resolves the package manager to use. In order, it checks the following: