Message Service の範囲の定義

1// Import message service features.
2import {
3    subscribe,
4    unsubscribe,
5    APPLICATION_SCOPE,
6    MessageContext
7} from 'lightning/messageService';
8
9// To pass scope, you must get a message context.
10@wire(MessageContext)
11    messageContext;
12
13// Pass scope to the subscribe() method.
14    subscribeToMessageChannel() {
15        if (!this.subscription) {
16            this.subscription = subscribe(
17                this.messageContext,
18                recordSelected,
19                (message) => this.handleMessage(message),
20                { scope: APPLICATION_SCOPE }
21            );
22        }
23    }