Javascript babel preset react app/node_modules/@babel/runtime/helpers/esm/defineProperty.js:1语法错误：createScript处意外的令牌导出（vm.js:80:10

我正试图通过以下步骤来实现i18n

• 好的，现在当我们运行npm run build时，我们应该看到build/locales/data.json，它将所有json文件组合成一个文件

从那以后，我无法让npm运行构建工作。我修复了一个错误，然后出现了另一个错误。我猜这是babel/webpack问题，因为我没有使用它们的经验，并且教程中有一些我处理过的旧babel语法错误

这是我的package.json

{
    "dependencies": {
    "@babel/core": "7.4.3",
    "@babel/preset-env": "^7.5.4",
    "@babel/preset-react": "^7.0.0",
    "@babel/runtime": "^7.5.4",
    "@svgr/webpack": "4.1.0",
    "@typescript-eslint/eslint-plugin": "1.6.0",
    "@typescript-eslint/parser": "1.6.0",
    "babel-eslint": "10.0.1",
    "babel-jest": "^24.8.0",
    "babel-loader": "8.0.5",
    "babel-plugin-named-asset-import": "^0.3.2",
    "babel-plugin-react-intl": "^4.1.0",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-preset-react-app": "^9.0.0",
    "bootstrap": "^4.3.1",
    "camelcase": "^5.2.0",
    "case-sensitive-paths-webpack-plugin": "2.2.0",
    "css-loader": "2.1.1",
    "dotenv": "6.2.0",
    "dotenv-expand": "4.2.0",
    "eslint": "^5.16.0",
    "eslint-config-react-app": "^4.0.1",
    "eslint-loader": "2.1.2",
    "eslint-plugin-flowtype": "2.50.1",
    "eslint-plugin-import": "2.16.0",
    "eslint-plugin-jsx-a11y": "6.2.1",
    "eslint-plugin-react": "7.12.4",
    "eslint-plugin-react-hooks": "^1.5.0",
    "file-loader": "3.0.1",
    "firebase": "^6.2.4",
    "fs-extra": "7.0.1",
    "html-webpack-plugin": "4.0.0-beta.5",
    "identity-obj-proxy": "3.0.0",
    "is-wsl": "^1.1.0",
    "jest": "24.7.1",
    "jest-environment-jsdom-fourteen": "0.1.0",
    "jest-resolve": "24.7.1",
    "jest-watch-typeahead": "0.3.0",
    "mini-css-extract-plugin": "0.5.0",
    "optimize-css-assets-webpack-plugin": "5.0.1",
    "pnp-webpack-plugin": "1.2.1",
    "postcss-flexbugs-fixes": "4.1.0",
    "postcss-loader": "3.0.0",
    "postcss-normalize": "7.0.1",
    "postcss-preset-env": "6.6.0",
    "postcss-safe-parser": "4.0.1",
    "react": "^16.8.6",
    "react-app-polyfill": "^1.0.1",
    "react-dev-utils": "^9.0.1",
    "react-dom": "^16.8.6",
    "react-intl": "^2.9.0",
    "react-router-dom": "^5.0.1",
    "reactstrap": "^8.0.1",
    "resolve": "1.10.0",
    "sass-loader": "7.1.0",
    "semver": "6.0.0",
    "style-loader": "0.23.1",
    "terser-webpack-plugin": "1.2.3",
    "ts-pnp": "1.1.2",
    "url-loader": "1.1.2",
    "webpack": "4.29.6",
    "webpack-dev-server": "3.2.1",
    "webpack-manifest-plugin": "2.0.4",
    "workbox-webpack-plugin": "4.2.0"
  },
  "devDependencies": {
    "@babel/cli": "^7.5.0",
    "@babel/node": "^7.5.0",
    "@babel/plugin-transform-runtime": "^7.5.0"
  },
  "scripts": {
    "start": "node scripts/start.js",
    "test": "node scripts/test.js",
    "build:langs": "NODE_ENV='production' babel-node scripts/mergeMessages.js",
    "build": "npm run build:langs && node scripts/build.js"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
  },
  "babel": {
    "presets": [
      "react-app",
      "@babel/preset-env",
      "@babel/preset-react"
    ],
    "passPerPreset": false,
    "plugins": [
      [
        "@babel/plugin-transform-runtime"
      ],
      [
        "react-intl",
        {
          "messagesDir": "./public/messages/"
        }
      ]
    ]
  }
}

下面是错误：

/yadayada/node_modules/babel preet react app/node_modules/@babel/runtime/helpers/esm/defineProperty.js:1（函数（导出、要求、模块、文件名、目录名）{export 默认函数_defineProperty（对象、键、值）{ ^^^^^^

SyntaxError:意外的令牌导出 在createScript上（vm.js:80:10） 在Object.runInThisContext（vm.js:139:10） 在模块处编译（Module.js:616:28） 在Module.\u compile（/yadayada/node\u modules/pirates/lib/index.js:99:24） at Module._extensions..js（Module.js:663:10） 在Object.newLoader[as.js]（/yadayada/node_modules/pirates/lib/index.js:104:7） 在Module.load（Module.js:565:32） 在tryModuleLoad时（module.js:505:12） 在Function.Module.\u加载（Module.js:497:3） at Module.require（Module.js:596:17）

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在一个类似的i18nReact项目中，我看到defineProperty.js存在类似的模糊问题

此软件包大约在一个月前更新为9.0.1版。安装以前的版本为我修复了此问题：

npm install babel-preset-react-app@9.0.0

---

我已经多次面对这个问题，下面是我如何解决它的 1-以管理员身份启动终端（或在命令之前写入sudo） 2-尝试清除缓存 npm缓存清除--强制

---

3-尝试npm安装，希望它能正常工作

我的构建（2019年8月30日）正在抱怨defineProperty.js丢失。这里肯定有点奇怪。下一步也使用react i18。我无法检查这是否可行，同时我不得不使用另一个库，但谢谢。