Few mutations in GitHub API v4 (GraphQL)?

Question

Using GitHub GraphQL API (v4), is it possible to do any of these tasks?

• Create/edit/delete repositories
• Create/edit/delete releases
• Create/update/merge pull requests
• Create tags
• Create files/blobs

We were discussing migrating to GraphQL from REST but without this functionality it seems premature. Being new to GraphQL, I want to make sure I'm not missing this functionality somewhere.

UPDATE:

From GitHub Staff (April 21, 2018):

Unfortunately, mutation coverage isn’t the best in our GraphQL API right now. The good news is that we have a focused team working on building out parity between REST and GraphQL. It’s hard to give ETAs on these mutations for you, but they’re on the list of things to do!

Answer 1

The createRepository mutation was added to GitHub's GraphQL API v4 on 26 June 2019.

For example, the following mutation creates a new, public repository "foo":

mutation { 
  createRepository(input:{name:"foo", visibility:PUBLIC}) { 
    clientMutationId,
    repository {
      id,
      nameWithOwner
    }
  }
}

The updateRepository mutation was added on 17 July 2019.

The (create|merge|close)PullRequest mutations were added on 24 October 2018.

Creating tags (createRef, strictly speaking) was added on 28 June 2019

So, as of 29 July 2019, I believe there are just the mutations for blobs, releases, and deleteRepository that are still outstanding from your list.