npm i superagent-global --save

npm test

import superagent from 'superagent';
import {beforeSend, beforeStart, end} from 'superagent-global';
beforeStart(()=> {
    console.log('global_onBeforeStart');
});
beforeSend((Request) => {
    console.log('global_onBeforeSend');
});
end((err, res) => {
    console.log('global:', res);
    // if return true, every end callback will execute. or not
    if(err) {
        return false;
    }
    return true;
});
// test get
superagent.get('https://baidu.com').end((err, res) => {
    console.log(res);
});