在使用前，在项目的最外层使用cnpm命令执行以下本地安装指令
本地安装指令: cnpm i webpack@4.41.6 webpack-cli@3.3.11 webpack-dev-server@3.10.3 css-loader@3.4.2 file-loader@5.0.2 html-loader@0.5.5 html-webpack-plugin@3.2.0 less@3.11.1 less-loader@5.0.0 style-loader@1.1.3 url-loader@3.0.0 -D
css-loader: "^5.0.1", file-loader: "^6.2.0", html-loader: "^1.3.2", html-webpack-plugin: "^4.5.0", less: "^3.12.2", less-loader: "^7.1.0", style-loader: "^2.0.0", url-loader: "^4.1.1", webpack: "^4.43.0", webpack-cli: "^3.3.12", webpack-dev-server: "^3.11.0"