我从客户那里得到了一个项目，要用一些要点来更新该项目。但我在运行该项目时遇到了问题。

我安装了 npm，并根据 package.json 信息下载了所有必需的节点模块。

    {
  "name": "acelle-builder",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "type" : "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@types/ace": "0.0.42",
    "copy-webpack-plugin": "^5.1.1",
    "css-loader": "^3.6.0",
    "file-loader": "^4.1.0",
    "html-loader": "^0.5.5",
    "mini-css-extract-plugin": "^0.8.0",
    "node-sass": "^4.14.1",
    "raw-loader": "^3.1.0",
    "sass-loader": "^7.1.0",
    "style-loader": "^0.23.1",
    "svg-url-loader": "^3.0.0",
    "to-string-loader": "^1.1.5",
    "url-loader": "^2.1.0",
    "webpack": "^4.44.1",
    "webpack-cli": "^3.3.12"
  },
  "dependencies": {
    "ace-builds": "^1.4.12",
    "bootstrap": "^4.5.2",
    "jquery": "^3.5.1",
    "js-beautify": "^1.13.0",
    "popper.js": "^1.16.1"
  }
}

有一些导入 html 文件的代码，如

    import controls from './controls.html';
import widgets from './widgets.html';

但是当我使用节点命令运行此项目时，我收到错误，文件扩展名为未知 .html。

我该如何解决这个问题？