在严格模式之外尚不支持块范围的声明 [英] Block-scoped declarations not yet supported outside strict mode

问题描述

我在 Homestead vagrant 机器上运行 Laravel 5.4.我已经使用 npm install 命令安装了所有 npm 依赖项.这没有产生任何错误.

I'm running Laravel 5.4 on my Homestead vagrant box. I've installed all the npm dependencies with npm install command. That didn't produce any errors.

在我的 webpack.min.js 文件中，我有:

In my webpack.min.js file I have:

const { mix } = require('laravel-mix');

/*
 |--------------------------------------------------------------------------
 | Mix Asset Management
 |--------------------------------------------------------------------------
 |
 | Mix provides a clean, fluent API for defining some Webpack build steps
 | for your Laravel application. By default, we are compiling the Sass
 | file for the application as well as bundling up all the JS files.
 |
 */

mix.js([
        'resources/assets/plugins/jquery-1.11.3.min.js',
        'resources/assets/plugins/bootstrap/js/bootstrap.min.js',
        'resources/assets/js/main.js'
    ], 'public/js'
);

mix.combine([
       'resources/assets/plugins/bootstrap/css/bootstrap.min.css',
       'resources/assets/plugins/font-awesome/css/font-awesome.css',
       'resources/assets/css/styles.css'
   ], 'public/css/all.css');

当我想运行 npm run production 时，我收到以下错误:

When I want to run npm run production I'm getting the following errors:

> @ production /home/vagrant/projects/nielsvroman
> node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js

/home/vagrant/projects/nielsvroman/node_modules/laravel-mix/setup/webpack.config.js:120
        let extractPlugin = new plugins.ExtractTextPlugin(
        ^^^

SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:404:25)
    at Object.Module._extensions..js (module.js:432:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at requireConfig (/home/vagrant/projects/nielsvroman/node_modules/webpack/bin/convert-argv.js:96:18)
    at /home/vagrant/projects/nielsvroman/node_modules/webpack/bin/convert-argv.js:109:17
    at Array.forEach (native)

npm ERR! Linux 3.19.0-25-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "run" "production"
npm ERR! node v5.0.0
npm ERR! npm  v3.3.6
npm ERR! code ELIFECYCLE
npm ERR! @ production: `node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ production script 'node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js'.
npm ERR! This is most likely a problem with the  package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node node_modules/cross-env/bin/cross-env.js NODE_ENV=production node_modules/webpack/bin/webpack.js --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js
npm ERR! You can get their info via:
npm ERR!     npm owner ls
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/vagrant/projects/nielsvroman/npm-debug.log

这可能是什么问题?

推荐答案

我在 Ubuntu 上遇到了由旧版本的 nodejs 包引起的同样问题.我刚刚更新到 7.5，它正在运行.

I had the same problem coused by the old version of nodejs package on Ubuntu. I've just updated to 7.5 and it's working.

curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get install -y nodejs

这篇关于在严格模式之外尚不支持块范围的声明的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！