Amplify No pubsub 模块申请订阅 ReactJs

Question

我正面临订阅问题，它抛出异常

No pubsub module applied for subscription

index.js

import Amplify from "@aws-amplify/core";
import PubSub from "@aws-amplify/pubsub";
import API from "@aws-amplify/api";
import config from "./aws-exports";

Amplify.configure(config);
PubSub.configure(config);
API.configure(config);

我的组件

async componentDidMount() {
  API.graphql(graphqlOperation(subscriptions.ticketModified)).subscribe({
      next: todoTicket => console.log(todoTicket)
    });
}

我错过了什么？

Answer 1

导入权库背后的秘密

import Amplify, { API, graphqlOperation } from "aws-amplify";
import PubSub from "@aws-amplify/pubsub";


Amplify.configure(config);
PubSub.configure(config);
API.configure(config);