Graphql更新缓存不要忘记__typename

手写Edge，console里面一直有warning: writeToStore: Missing field __typename，那我就加上咯，可以怎么试怎么不行。结果发现是漏了一个_,有两个_面壁一百次。

update: (proxy, { data: { createPost } }) => {
  const data = proxy.readQuery({
    query: POSTS_QUERY,
    variables: {
      input: {
        authorNickname: this.getCurrentUserProfile.nickname
      }
    }
  })
  data.posts.edges.push({
    node: createPost,
    cursor: Buffer.from(createPost.id.toString()).toString('base64'),
    __typename: 'PostEdge'  // 注意这里
  })
  proxy.writeQuery({
    query: POSTS_QUERY,
    variables: {
      input: {
        authorNickname: this.getCurrentUserProfile.nickname
      }
    },
    data
  })
}