Huỳ*_*yễn 16 javascript reactjs eslint use-effect
这是我的useEffect一个简单的清理功能() => { inbox?.destroy(); },但是当我在那里使用清理功能时,它会发出警告。为什么会这样,清理函数不是合法的语法吗?如何修复它(当然不删除清理功能)?
useEffect(() => {
const { currentUser } = initialState!;
let inbox: Talk.Inbox;
if (!currentUser || !talkjsContainerRef.current) return;
Talk.ready.then(async () => {
const me = employeeToUser(currentUser);
window.talkSession = new Talk.Session({ appId, me });
if (id === undefined) {
// me without other => most recent message first
inbox = window.talkSession.createInbox();
} else {
// me with an other => select other
const other = employeeToUser(await readEmployee(Number(id)));
const conversation = window.talkSession.getOrCreateConversation(Talk.oneOnOneId(me, other));
conversation.setParticipant(me);
conversation.setParticipant(other);
inbox = window.talkSession.createInbox({ selected: conversation });
}
inbox.mount(talkjsContainerRef.current);
});
return () => {
inbox?.destroy();
};
}, [id, initialState]);
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Huỳ*_*yễn 46
return;可能的修复:转到return undefined;
此规则要求
return语句始终或从不指定值
在第4行,if (!currentUser || !talkjsContainerRef.current) return;我的return语句没有指定值,这与我的“清理功能”相矛盾。
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