react-native-dotenv

npm install react-native-dotenv @types/react-native-dotenv

babel config

{
  "plugins": [
    ["module:react-native-dotenv", {
      "moduleName": "react-native-dotenv"
    }]
  ]
}

.env

API_URL="URL"

import { API_URL } from 'react-native-dotenv'

axios.get(API_URL)