在这种情况下如何使用异步/等待？

Question

I have an index.js which gets data from a json file.
I export this function to my App.js where I want to store this data in another object.

configurations/index.js:

let config = (async () => {
    let data;
    if (process.env.NODE_ENV !== 'development') {
        if (
            typeof window !== 'undefined' &&
            (window.location.hostname.match('localhost') || window.location.hostname.match('127.0.0.1'))
        ) {
            data = require('./config.client.local.json');
        } else {
            data = require('./config.client.ip.json');
        }
    } else {
        data = fetch(process.env.PUBLIC_URL + "/config.client.json")
            .then(async res => await res.json());
    }
    return Object.assign({}, await data);
})();

export default config;

App.js

 import OIDC from 'oidc-client';
 import config from './configurations';
 window["UserManager"] = new OIDC.UserManager(config.oidc);

I have no idea how to get the data without using async/await

Does anyone have an idea?

Answer 1

It looks like config is a Promise which means that you can do this:

config.then(({ oidc }) => {
  window.UserManager = new OIDC.UserManager(oidc);
});