在查询中找到 @client 指令，但未指定 ApolloClient 解析器

Question

OS: Windows 10 专业版
阿波罗客户端：2.6.3 阿波罗提升：0.1.16

任何人都可以解释为什么我会收到以下错误消息吗？:

Found @client directives in a query but no ApolloClient resolvers were specified. This means ApolloClient local resolver handling has been disabled, and @client directives will be passed through to your link chain.

当我按如下方式定义我的 ApolloClient 时：

return new ApolloClient({
    uri: process.env.NODE_ENV === 'development' ? endpoint : prodEndpoint,
    request: operation => {
      operation.setContext({
        fetchOptions: {
          credentials: 'include',
        },
        headers: { cookie: headers && headers.cookie },
      });
    },
    // local data
    clientState: {
      resolvers: {
        Mutation: {
          toggleCart(_, variables, { cache }) {
            // Read the cartOpen value from the cache
            const { cartOpen } = cache.readQuery({
              query: LOCAL_STATE_QUERY,
            });
            // Write the cart State to the opposite
            const data = {
              data: { cartOpen: !cartOpen },
            };
            cache.writeData(data);
            return data;
          },
        },
      },
      defaults: {
        cartOpen: false,
      },
    },
  });

Answer 1

来自docs：

If you're interested in integrating local state handling capabilities with Apollo Client < 2.5, please refer to our (now deprecated) apollo-link-state project. As of Apollo Client 2.5, local state handling is baked into the core, which means it is no longer necessary to use apollo-link-state

clientState 配置选项仅用于 apollo-link-state。您需要将解析器直接添加到配置中，如文档中所示：

new ApolloClient({
  uri: '/graphql',
  resolvers: { ... },
})

另请注意，不再有 defaults 选项 -- 应通过直接在缓存实例上调用 writeData 来初始化缓存（请参阅 here）。

我建议阅读最新的文档并避免使用来自外部来源的任何示例（例如现有的存储库或教程），因为这些可能已过时。

注意：从 3.0 版开始，writeData 已被删除，取而代之的是 writeFragment 和 writeQuery。

在查询中找到 @client 指令，但未指定 ApolloClient 解析器

Found @client directives in a query but no ApolloClient resolvers were specified

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