vue.jsでポート番号を変更する方法

module.exports = {
  dev: {
    env: require('./dev.env'),
    port: 8080,  // 端口号
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    proxyTable: {},
    // CSS Sourcemaps off by default because relative paths are "buggy"
    // with this option, according to the CSS-Loader README
    // (https://github.com/webpack/css-loader#sourcemaps)
    // In our experience, they generally work as expected,
    // just be aware of this issue when enabling this option.
    cssSourceMap: false,
   }
};

module.exports = {
  devServer: {
    port: 8080,   // 端口号
  }
};