由於範圍/提升/加載順序,我遇到問題。在下面,Auth0Lock在第6行的if
塊中定義,但不在其外面,或者在類中。有誰知道爲什麼?ES6類和模塊系統的範圍
import { EventEmitter } from 'events';
import { isTokenExpired } from './jwtHelper';
console.log('in');
const isClient = typeof window !== 'undefined';
if (isClient) {
let Auth0Lock = require('auth0-lock').default;
console.log('isClient');
console.log('Auth0Lock inner', Auth0Lock);
}
console.log('Auth0Lock outer', Auth0Lock);
export default class AuthService extends EventEmitter {
constructor(clientId, domain) {
super();
console.log('happening');
if (!isClient) {
console.log('returning');
return false;
}
// Configure Auth0
this.lock = new Auth0Lock(clientId, domain, {});
// Add callback for lock `authenticated` event
this.lock.on('authenticated', this._doAuthentication.bind(this));
// Add callback for lock `authorization_error` event
this.lock.on('authorization_error', this._authorizationError.bind(this));
// binds login functions to keep this context
this.login = this.login.bind(this);
}
// curtailed
}
因爲編寫它的人沒有寫出可用的JavaScript代碼。試着問問他。 –
@TamasHegedus啊!你也看到了鎖上的錯誤!對,對不起,我以爲你在說我! :D – user1775718
是的,他的代碼實際上工作。如果你改變了它的變量,讓它把範圍限制在「if」括號中... – user1775718