text: const execa = require('execa');
  const normalizeUrl = require('normalize-url');
  const AggregateError = require('aggregate-error');
  const getError = require('./get-error');
  const getRegistry = require('./get-registry');
  const setNpmrcAuth = require('./set-npmrc-auth');
  
  module.exports = async (npmrc, pkg, context) => {
    const {
      cwd,
      env: {DEFAULT_NPM_REGISTRY = 'https://registry.npmjs.org/', ...env},
      stdout,
      stderr,
    } = context;
    const registry = getRegistry(pkg, context);
  
    await setNpmrcAuth(npmrc, registry, context);
  
    if (normalizeUrl(registry) === normalizeUrl(DEFAULT_NPM_REGISTRY)) {
      try {
        const whoamiResult = execa('npm', ['whoami', '--userconfig', npmrc, '--registry', registry], {cwd, env});
        whoamiResult.stdout.pipe(stdout, {end: false});
        whoamiResult.stderr.pipe(stderr, {end: false});
        await whoamiResult;
      } catch (_) {
        throw new AggregateError([getError('EINVALIDNPMTOKEN', {registry})]);
      }
    }
  };
  