如何在 react-native cli 中升级 core-js@3？

Question

我正在尝试使用 react-native cli 创建新项目，但是当我创建新项目时收到以下错误消息：

react-native > create-react-class > fbjs > core-js@1.2.7: core-js@<2.6.8 is no longer maintained. Please, upgrade to core-js@3 or at least to actual version of core-js@2.

下面列出了我的 package.json 文件的内容：

{
      "name": "EmojiDictRN",
      "version": "0.0.1",
      "private": true,
      "scripts": {
        "start": "node node_modules/react-native/local-cli/cli.js start",
        "test": "jest"
      },
      "dependencies": {
        "react": "16.8.3",
        "react-native": "0.59.8"
      },
      "devDependencies": {
        "@babel/core": "^7.4.5",
        "@babel/runtime": "^7.4.5",
        "babel-jest": "^24.8.0",
        "jest": "^24.8.0",
        "metro-react-native-babel-preset": "^0.54.1",
        "react-test-renderer": "16.8.3"
      },
      "jest": {
        "preset": "react-native"
      }
    }

要查看我的终端的完整输出，请单击 here。关于如何解决此警告消息的任何想法？

如有任何帮助，我们将不胜感激！

Answer 1

下载并保存警告消息中要求的 core-js 模块版本：

npm install --save core-js@^3

这将为您的 react-native 项目更新 core-js 依赖项，以使用仍在积极维护的版本 ^3.x.x。

希望对您有所帮助！

如何在 react-native cli 中升级 core-js@3？

How to upgrade core-js@3 in react-native cli?

npm

react-native

react-native-cli