sampleJSUse.js

import Config from 'react-native-config';
import axios from 'axios';

const response = await axios(GITHUB_OAUTH_ENDPOINT, {
  method: METHOD.POST,
  headers: {
    Accept: 'application/json',
    'Content-Type': 'application/json',
  },
  data: JSON.stringify({
    client_id: Config.CLIENT_ID, // Access CLIENT_ID env varaible using `Config`
    client_secret: Config.CLIENT_SECRET, // Access CLIENT_SECRET env varaible using `Config`
    code,
    state,
  }),
});

Js API call

Testing