预设选项中不允许 Babel 覆盖反应原生导航

Question

我试图在react-native 上将路由器react native navigation v2 添加到这个启动项目，但我遇到了一个与 babel 包相关的问题（可能）。当我跑步时

react-native run-android

Metro Bundler 中出现此错误：

加载依赖图，完成。 : 捆绑失败: 错误: [BABEL] D:\react—native\projecti\index.js: .overr ides is not allowed in preset options

在 Object.keys.forEach.key (D:\react—native\projecti\node_modules\metro\node odules\Obabel\core\lib\config\validation\options.js:71:13) 在 Array.forEach () 验证时（D:\react—native\projecti\node_modules\metro\node_modules\nabel core\lib\config\validation\options.js:69:21） 在 instantiatePreset (D:\react—native\projecti\node_modules\metro\node_modul s\l@babel\core\lib\config\full.js:242:36) 在 cachedFunction (D:\react—native\projecti\node_modules\metro\node_modules\ babel\core\lib\config\caching.js:42:19) 在 loadPresetDescriptor (D:\react—native\projecti\node_modules\metro\node_mo Iules\ftabel\core\lib\config\full.js:233:45) 在 config.presets.map.descriptor (D:\react—native\projecti\node_modules\metr I\node_modules\ftabel\core\lib\config\full.js:68:19) 在 Array.map() 在 recurseDescriptors (D:\react—native\projecti\node_modules\metro\node_modu les\Obabel\core\lib\config\full.js:66:38)

在控制台中构建成功结束。

我的 package.json

{
  "name": "project1",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest",
    "android": "cd ./android && ./gradlew app:assembleDebug && ./gradlew installDebug"
  },
  "dependencies": {
    "@babel/runtime": "^7.1.2",
    "react": "16.5.0",
    "react-native": "0.56",
    "react-native-navigation": "^2.0.2569"
  },
  "devDependencies": {
    "@babel/core": "^7.1.0",
    "@babel/preset-env": "^7.1.0",
    "babel-eslint": "^9.0.0",
    "babel-jest": "^23",
    "babel-preset-react-native": "^5",
    "jest": "23.6.0",
    "metro-react-native-babel-preset": "0.47.0",
    "react-test-renderer": "16.5.0"
  },
  "jest": {
    "preset": "react-native"
  }
}

.babelrc

{
  "presets": [
    "@babel/preset-env",
    "module:metro-react-native-babel-preset"
  ]
}

Answer 1

您的 RN 0.56 似乎使用了一些 babel 的 beta 版本。

我看到你有 2 个解决方案：

1) 保持 RN 0.56 并设置正确的 babel deps

对于 RN 0.56，您需要确保所有 @babel/* 依赖都固定在 7.0.0-beta.47 版本（请参阅 0.56 的更改日志）

2) 将您的项目升级到 RN 0.57

为了能够使用最新的 babel 7 依赖项，您必须将项目迁移到 RN 0.57。

This is what I have for a 0.57.1 project:

"dependencies": {
    "react": "16.5.0",
    "react-native": "0.57.1",
    .......
  }

  "devDependencies": {
    "@babel/core": "^7.0.0",
    "@babel/plugin-proposal-class-properties": "^7.0.0",
    "@babel/plugin-proposal-decorators": "^7.0.0",
    "@babel/plugin-proposal-do-expressions": "^7.0.0",
    "@babel/plugin-proposal-export-default-from": "^7.0.0",
    "@babel/plugin-proposal-export-namespace-from": "^7.0.0",
    "@babel/plugin-proposal-function-bind": "^7.0.0",
    "@babel/plugin-proposal-function-sent": "^7.0.0",
    "@babel/plugin-proposal-json-strings": "^7.0.0",
    "@babel/plugin-proposal-logical-assignment-operators": "^7.0.0",
    "@babel/plugin-proposal-nullish-coalescing-operator": "^7.0.0",
    "@babel/plugin-proposal-numeric-separator": "^7.0.0",
    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
    "@babel/plugin-proposal-optional-chaining": "^7.0.0",
    "@babel/plugin-proposal-pipeline-operator": "^7.0.0",
    "@babel/plugin-proposal-throw-expressions": "^7.0.0",
    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
    "@babel/plugin-syntax-import-meta": "^7.0.0",
    "@babel/plugin-syntax-object-rest-spread": "^7.0.0",
    "@babel/plugin-transform-runtime": "^7.0.0",
    "@babel/preset-env": "^7.0.0",
    "@babel/preset-flow": "^7.0.0",
    "@babel/register": "^7.0.0",
    "babel-core": "^7.0.0-bridge.0",
    "babel-preset-react-native-stage-0": "^1.0.1",
    .....

}

重要提示：将.babelrc配置更新为：

{
    "presets": ["module:metro-react-native-babel-preset"]
}

更多关于 RN 0.56、0.57 变更日志的信息在这里：

https://github.com/react-native-community/react-native-releases/blob/master/CHANGELOG.md

更多关于 babel 7 deps 的信息在这里：

https://new.babeljs.io/docs/en/next/v7-migration.html#versioning-dependencies-blog-2017-12-27-nearing-the-70-releasehtml-peer-dependencies-integrations https://github.com/babel/babel-upgrade

更多关于将 RN 项目升级到 babel 7 的信息：

React native upgrade from babel 6 to babel 7

注意：确保在 babel 版本修改后删除所有 node_modules 并重新安装它们并清理本地缓存。

rm -rf $TMPDIR/react-*; rm -rf $TMPDIR/haste-*; rm -rf $TMPDIR/metro-*; watchman watch-del-all