这篇文章涉及一个快速变化的事件。
在我的应用程序上运行“npm update”后，我突然收到以下错误：

Compiled with problems:

ERROR in ./node_modules/pako/lib/zlib/trees.js 257:106

Module parse failed: Unexpected token (257:106)
File was processed with these loaders:
 * ./node_modules/babel-loader/lib/index.js
You may need an additional loader to handle the result of these loaders.
|  *     not null.
|  */
> function gen_bitlen(s, desc) /*    deflate_state *s;*/ /*    tree_desc *desc;    /* the tree descriptor */*/{
|   var tree = desc.dyn_tree;
|   var max_code = desc.max_code;

奇怪。所以我把它和运行在不同工作站上的相同应用程序进行了比较，代码相同，但我没有*****运行“npm update”。应用程序工作正常，这并不奇怪。
我已经看到其他帖子与此错误，但他们的解决方案似乎不适用于我的环境。
我不知道为什么它在我的主工作站上不能工作。如果我从工作站复制node_modules，应用程序可以正常启动。但是一旦我删除node_modules和package-lock.json并重新安装，应用程序就不能启动。我已经删除了node_modules/package-lock.json/clear npm缓存。没有帮助。
我正在通过“npm ls”比较模块版本，它们在两个工作站上是相同的。
两者都在运行NodeJS 8.12.0和npm 8.19.2
我查看了它在（pako/lib/zlib/trees.js）上出错的文件，它在两个系统上是相同的。
我不知道什么是“pako”，但使用“npm解释pako”，它似乎与pdf-lib有关，它从未更新过。
我的应用程序是用create-react-app构建的。
我完全迷路了。这是我的包裹。

{
  "name": "foo",
  "version": "0.1.0",
  "description": "Foo",
  "contributors": [],
  "license": "UNLICENSED",
  "private": true,
  "dependencies": {
    "@coreui/chartjs": "^2.0.0",
    "@coreui/coreui-pro": "^3.4.2",
    "@coreui/icons": "^2.1.0",
    "@coreui/icons-pro": "^2.0.3",
    "@coreui/icons-react": "^1.1.0",
    "@coreui/react": "^3.4.6",
    "@coreui/react-chartjs": "^1.1.0",
    "@coreui/utils": "^1.3.1",
    "@fortawesome/fontawesome-free-solid": "^5.0.13",
    "@fortawesome/fontawesome-svg-core": "^6.1.1",
    "@fortawesome/free-regular-svg-icons": "^6.1.1",
    "@fortawesome/free-solid-svg-icons": "^6.1.1",
    "@fortawesome/react-fontawesome": "^0.1.18",
    "@nadavshaar/react-grid-table": "^1.0.0",
    "@pdf-lib/fontkit": "^1.1.1",
    "@react-firebase/auth": "^0.2.10",
    "ag-grid-community": "^25.3.0",
    "ag-grid-react": "^25.3.0",
    "arithmetic": "^1.0.1",
    "bootstrap": "^5.2.0",
    "classnames": "^2.3.1",
    "codemirror": "^5.63.3",
    "core-js": "^3.19.1",
    "downloadjs": "^1.4.7",
    "firebase": "^9.12.1",
    "firebase-admin": "^11.0.1",
    "firebaseui": "^6.0.1",
    "formik": "^2.2.9",
    "mobx": "^6.3.3",
    "mobx-react": "^7.1.0",
    "pdf-lib": "^1.17.1",
    "prop-types": "^15.7.2",
    "random-id": "^1.0.4",
    "react": "^17.0.2",
    "react-app-polyfill": "^2.0.0",
    "react-awesome-button": "^6.5.1",
    "react-big-calendar": "^0.33.6",
    "react-bootstrap": "^2.4.0",
    "react-collapsible": "^2.10.0",
    "react-cookie-consent": "^8.0.1",
    "react-dom": "^17.0.2",
    "react-firebase-hooks": "^5.0.3",
    "react-firebaseui": "^6.0.0",
    "react-grid-layout": "^1.3.0",
    "react-range": "^1.8.12",
    "react-redux": "7.2.4",
    "react-router-dom": "^5.3.0",
    "react-select": "^4.3.1",
    "react-text-mask-hoc": "^0.11.0",
    "react-toastify": "^9.0.8",
    "reactstrap": "^8.10.0",
    "redux": "4.1.0",
    "rpg-dice-roller": "1.6.0",
    "sass": "^1.55.0",
    "sillyname": "^0.1.0",
    "spinkit": "2.0.1",
    "string-math": "^1.2.2",
    "styled-components": "^5.3.3",
    "yup": "^0.32.11"
  },
  "devDependencies": {
    "mutationobserver-shim": "^0.3.7",
    "react-scripts": "^5.0.0"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "test:cov": "npm test -- --coverage --watchAll=false",
    "test:debug": "react-scripts --inspect-brk test --runInBand",
    "eject": "react-scripts eject",
    "zip": "git archive -o coreui-pro-react-admin-template-v$npm_package_version.zip -9 HEAD"
  },
  "bugs": {
    "url": "https://github.com/coreui/coreui-free-react-admin-template/issues"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 10",
    "not op_mini all"
  ],
  "jest": {
    "collectCoverageFrom": [
      "src/**/*.{js,jsx}",
      "!**/*index.js",
      "!src/serviceWorker.js",
      "!src/polyfill.js"
    ]
  },
  "engines": {
    "node": ">=8.16",
    "npm": ">=6"
  }
}