如何解决这个问题："node_modules/expo/AppEntry.js：[BABEL]"？

Question

#node_modules/expo/AppEntry.js: BABEL

我已经为我的项目安装了所有的依赖项，并且我遇到了这个问题，我不知道如何解决它。

#package.json - Main

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "babel": "^6.23.0",
    "expo": "~39.0.2",
    "expo-status-bar": "~1.0.2",
    "react": "16.13.1",
    "react-dom": "16.13.1",
    "react-native": "https://github.com/expo/react-native/archive/sdk-39.0.4.tar.gz",
    "react-native-dotenv": "^2.4.2",
    "react-native-web": "~0.13.12"
  },
  "devDependencies": {
    "@babel/core": "~7.9.0",
    "babel-plugin-module-resolver": "^4.0.0"
  },
  "private": true,
  "name": "my-project"
}

​

​

Answer 1

检查您的GitHub回购，正如byCedric指出的，您的问题在于您正在使用的依赖项。我做了以下的修改，这个应用程序看起来很好用，

截图：

​

​

package.json

{
  "main": "node_modules/expo/AppEntry.js",
  "scripts": {
    "start": "expo start",
    "android": "expo start --android",
    "ios": "expo start --ios",
    "web": "expo start --web",
    "eject": "expo eject"
  },
  "dependencies": {
    "@react-native-community/picker": "^1.6.6",
    "expo": "~39.0.2",
    "expo-status-bar": "~1.0.2",
    "react": "16.13.1",
    "react-dom": "16.13.1",
    "react-native": "https://github.com/expo/react-native/archive/sdk-39.0.4.tar.gz",
    "react-native-dotenv": "^2.4.2",
    "react-native-fs": "^2.16.6",
    "react-native-web": "~0.13.12"
  },
  "devDependencies": {
    "@babel/core": "~7.9.0"
  },
  "private": true
}

在安装了上面提到的所有依赖项之后，我还面临以下文件的两个问题：

1. node_modules\dotenv\lib\main.js
2. node_modules\react-native-dotenv\index.js

他们使用的是Node standard library module "fs"，所以我在上面的两个文件中用react-native-fs包替换了它。

修改后的两个文件：

//node_modules\dotenv\lib\main.js

const fs = require("react-native-fs")
const path = require('path')

function log (message /*: string */) {
  console.log(`[dotenv][DEBUG] ${message}`)
}
...

// node_modules\react-native-dotenv\index.js
const {readFileSync} = require("react-native-fs")
const dotenv = require('dotenv')

function parseDotenvFile(path, verbose = false) {
  let content
...

此外，在WeatherDetails.js中有一个错误，您将unitSystem而不是unitsSystem作为props传递。