反应-MobX错误：“装饰”插件需要一个“decoratorsBeforeExport”选项，其值必须是一个布尔值

Question

我收到以下错误：如果您是从巴比伦/巴贝尔6迁移或希望使用旧的装饰方案，你应该使用“装饰遗”，而不是插件的“装饰”。

的package.json

"@babel/plugin-proposal-decorators": {
      "version": "7.1.2",
      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-decorators/-/plugin-proposal-decorators-7.1.2.tgz",
      "integrity": "sha512-YooynBO6PmBgHvAd0fl5e5Tq/a0pEC6RqF62ouafme8FzdIVH41Mz/u1dn8fFVm4jzEJ+g/MsOxouwybJPuP8Q==",
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
        "@babel/helper-replace-supers": "^7.1.0",
        "@babel/helper-split-export-declaration": "^7.0.0",
        "@babel/plugin-syntax-decorators": "^7.1.0"
      }
    },

 "@babel/plugin-syntax-decorators": {
      "version": "7.1.0",
      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-decorators/-/plugin-syntax-decorators-7.1.0.tgz",
      "integrity": "sha512-uQvRSbgQ0nQg3jsmIixXXDCgSpkBolJ9X7NYThMKCcjvE8dN2uWJUzTUNNAeuKOjARTd+wUQV0ztXpgunZYKzQ==",
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0"
      }
    },

"babel-plugin-syntax-decorators": {
      "version": "6.13.0",
      "resolved": "http://registry.npmjs.org/babel-plugin-syntax-decorators/-/babel-plugin-syntax-decorators-6.13.0.tgz",
      "integrity": "sha1-MSVjtNvePMgGzuPkFszurd0RrAs=",
      "dev": true
    },
    "babel-plugin-transform-decorators-legacy": {
      "version": "1.3.5",
      "resolved": "https://registry.npmjs.org/babel-plugin-transform-decorators-legacy/-/babel-plugin-transform-decorators-legacy-1.3.5.tgz",
      "integrity": "sha512-jYHwjzRXRelYQ1uGm353zNzf3QmtdCfvJbuYTZ4gKveK7M9H1fs3a5AKdY1JUDl0z97E30ukORW1dzhWvsabtA==",
      "dev": true,
      "requires": {
        "babel-plugin-syntax-decorators": "^6.1.18",
        "babel-runtime": "^6.2.0",
        "babel-template": "^6.3.0"
      }
    },
"requires": {
     "@babel/plugin-proposal-decorators": "7.1.2",
}

tsconfig.json

{
    "compilerOptions": {
        "experimentalDecorators": true,
        "allowJs": true
    }
}

Answer 1

该错误消息是一点点一些有点深的搜索混淆然而，你可以用下面的方法解决这个问题。

我做任何假设，但您在本指南中使用的WebPack。

您需要巴贝尔提案装饰添加到您的开发依赖（你只需要在开发时间）（你已经添加）。

如果使用的纱线

yarn add --dev @babel/plugin-proposal-decorators 

否则的高度

npm install --save-dev @babel/plugin-proposal-decorators 

然后在您的package.json文件中，找到通天配置部分或如果不存在添加一个。在配置名称是严格的“通天塔”。

  "babel": {
    "presets": [
      "react-app"
    ],
    "plugins": [
      [
        "@babel/plugin-proposal-decorators",
        {
          "legacy": true
        }
      ]
    ]
  }

要格外注意缩进如果手工键入它。注意到对象"@babel/plugin-proposal-decorators"深深嵌套两个阵列里面，所以它必须是这样的工作。

和公正完整性检查，你会devDependencies至少像

  "devDependencies": {
    "@babel/plugin-proposal-decorators": "^7.1.2"
  }

现在，您可以建立两种纱线或NPM应用程序，并从此过上幸福生活。

Answer 2

{
 "presets": ['@babel/preset-env', '@babel/preset-react'],
 "plugins": [
  ["import", { "libraryName": "antd", "libraryDirectory": "es", "style": "less" }],
  [
    "@babel/plugin-proposal-decorators",
    {
      "decoratorsBeforeExport":true
    }
  ]
 ]
}

Answer 3

反应本地0.59

babel.config.js：

{ 
  "presets": ["module:metro-react-native-babel-preset"],
  "plugins": [
        ["@babel/plugin-transform-flow-strip-types"],
        ["@babel/plugin-proposal-decorators", { "legacy": true}],
        ["@babel/plugin-proposal-class-properties", { "loose": true}]
    ]
}

---

npm install @babel/plugin-transform-flow-strip-types @babel/plugin-proposal-decorators @babel/plugin-proposal-class-properties --save

---

来源：https://github.com/facebook/react-native/issues/20588#issuecomment-448218111

Answer 4

"babel": {
   "presets": [
     "react-app"
   ],
  "plugins": [
  [
    "@babel/plugin-proposal-decorators",
    {
      "legacy": true
    }
  ],
  [
    "@babel/plugin-proposal-class-properties",
    {
      "loose": true
    }
   ]
  ]
 },
 "devDependencies": {
 "@babel/plugin-proposal-decorators": "^7.3.0"
}