Dzmitry Bayarchyk dbayarchyk

## promiseCatchWithAwait.js
async function fetchAndUpdatePosts() {
  const posts = await fetchPosts().catch(() => {
    console.log('error in fetching posts');
  });

  if (posts) {
    doSomethingWithPosts(posts);
  }
}

## combineCatchHandler.js
async function fetchAndUpdatePosts() {
  let posts;

  try {
    posts = await fetchPosts();

    doSomethingWithPosts(posts); // throws an error
  } catch {
    // Now it handles errors from fetchPosts and doSomthingWithPosts.
    console.log('error in fetching posts');

## oldFetchAndUpdatePosts.js
function fetchAndUpdatePosts() {
  fetchPosts()
    .then((posts) => {
      updatePosts(posts)
        .catch((err) => {
          console.log('error in updating posts');
        });
    })
    .catch(() => {
      console.log('error in fetching posts');

## regularAsyncAwaitExample.js
async function fetchAndUpdatePosts() {
  let posts;

  try {
    posts = await fetchPosts();
  } catch {
    console.log('error in fetching posts');
  }

  if (!posts) {

## extendedRemovePostPayload.gql
type RemovePostPayload {
  removedPost: Post
  removedComments: CommentConnection
}

## removePostSchemaWithPayload.gql
type Mutation {
  removePost(id: ID!): RemovePostPayload!
}

type RemovePostPayload {
  removedPost: Post
}

## removePostData.json
{
  "data": {
    "removePost": {
      "id": "UG9zdDo1Y2ZiZjZjNmE2OWU5NDc2OGQ5ODQ1Mzc=",
      "title": "What is GraphQL",
    }
  }
}

## removePostSchema.gql
type Mutation {
  removePost(id: ID!): Post
}

## postsQueryData.json
{
  "data": {
    "posts": {
      "pageInfo": {
        "hasNextPage": true,
        "hasPreviousPage": false
      },
      "edges": [
        {
          "cursor": "5cfbf6c6a69e94768d984537",

## postsQuery.gql
query PostsQuery {
  posts(first: 1) {
    pageInfo {
      hasNextPage
      hasPreviousPage
    }
    edges {
      cursor
      node {
        id
	async function fetchAndUpdatePosts() {
	const posts = await fetchPosts().catch(() => {
	console.log('error in fetching posts');
	});

	if (posts) {
	doSomethingWithPosts(posts);
	}
	}
	async function fetchAndUpdatePosts() {
	let posts;

	try {
	posts = await fetchPosts();

	doSomethingWithPosts(posts); // throws an error
	} catch {
	// Now it handles errors from fetchPosts and doSomthingWithPosts.
	console.log('error in fetching posts');
	function fetchAndUpdatePosts() {
	fetchPosts()
	.then((posts) => {
	updatePosts(posts)
	.catch((err) => {
	console.log('error in updating posts');
	});
	})
	.catch(() => {
	console.log('error in fetching posts');
	type RemovePostPayload {
	removedPost: Post
	removedComments: CommentConnection
	}
	type Mutation {
	removePost(id: ID!): RemovePostPayload!
	}

	type RemovePostPayload {
	removedPost: Post
	}
	{
	"data": {
	"removePost": {
	"id": "UG9zdDo1Y2ZiZjZjNmE2OWU5NDc2OGQ5ODQ1Mzc=",
	"title": "What is GraphQL",
	}
	}
	}
	{
	"data": {
	"posts": {
	"pageInfo": {
	"hasNextPage": true,
	"hasPreviousPage": false
	},
	"edges": [
	{
	"cursor": "5cfbf6c6a69e94768d984537",
	query PostsQuery {
	posts(first: 1) {
	pageInfo {
	hasNextPage
	hasPreviousPage
	}
	edges {
	cursor
	node {
	id