Method build

test/fixtures/__shared__/util/scripts.js:59–64

({ env = {} } = {})

  }

  async build({ env = {} } = {}) {
    return await execaSafe('npm', ['run', 'build'], {
      cwd: this.root,
      env: Object.assign({}, { CI: 'false', FORCE_COLOR: '0' }, env),
    });
  }

  async serve() {
    const port = await getPort();