我尝试使用 compose 将我的 Chat 组件与两个查询和一个突变包装在一起。

但是，控制台中仍然出现以下错误：

Uncaught Error: react-apollo only supports a query, subscription, or a mutation per HOC. [object Object] had 2 queries, 0 subscriptions and 0 mutations. You can use ' compose ' to join multiple operation types to a component

以下是我的查询和导出语句：

// this query seems to cause the issue
const findConversations = gql`
    query allConversations($customerId: ID!) {
        allConversations(filter: {
          customerId: $customerId
        })
    } {
        id
    }
`

const createMessage = gql`
    mutation createMessage($text: String!, $conversationId: ID!) {
        createMessage(text: $text, conversationId: $conversationId) {
            id
            text
        }
    }
`

const allMessages = gql`
    query allMessages($conversationId: ID!) {
        allMessages(filter: {
        conversation: {
        id: $conversationId
        }
        })
        {
            text
            createdAt
        }
    }
`

export default compose(
  graphql(findConversations, {name: 'findConversationsQuery'}),
  graphql(allMessages, {name: 'allMessagesQuery'}),
  graphql(createMessage, {name : 'createMessageMutation'})
)(Chat)

显然，问题出在 findConversations 查询上。如果我将其注释掉，就不会出现错误，组件也会正确加载：

// this works
export default compose(
  // graphql(findConversations, {name: 'findConversationsQuery'}),
  graphql(allMessages, {name: 'allMessagesQuery'}),
  graphql(createMessage, {name : 'createMessageMutation'})
)(Chat)

有人能告诉我我遗漏了什么吗？

顺便说一句，我还在 allMessagesQuery 上设置了一个订阅，以防万一：

componentDidMount() {

  this.newMessageSubscription = this.props.allMessagesQuery.subscribeToMore({
    document: gql`
        subscription {
            createMessage(filter: {
            conversation: {
            id: "${this.props.conversationId}"
            }
            }) {
                text
                createdAt
            }
        }
    `,
    updateQuery: (previousState, {subscriptionData}) => {
       ...
    },
    onError: (err) => console.error(err),
  })

}