1)webpack-dev-server不是内部命令安装webpack-dev-server: npm install --save-dev webpack-dev-server 安装后使用 webpack-dev-server: webpack-dev-server --open 上述命令应该自动在浏览器中打开 http://localhost:8080,实际上报错:webpack-dev-server不是内部命令: 解决方法:全局安装webpack-dev-server npm install webpack-dev-server -g
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