Webpack4 Entrypoint undefined = index.html

Question

使用 HtmlWebpackPluginconst HtmlWebpackPlugin = require('html-webpack-plugin');module.exports = {     plugins: [new HtmlWebpackPlugin()] };终端得到警告 Entrypoint undefined = index.html// 环境"webpack": "^4.12.0","html-webpack-plugin": "^3.2.0",无论 dist 文件夹下是否有 index.html 文件