Method getIssueTimeline

src/github/github_fetch.mjs:158–231

* Fetch issue timeline events, including cross-references and "closed by" data. * * This uses GraphQL because REST issue timeline is still awkward and requires previews.

(number, { useCache = true } = {})

   * This uses GraphQL because REST issue timeline is still awkward and requires previews.
   */
  async getIssueTimeline(number, { useCache = true } = {}) {
    const query = `
      query($owner: String!, $name: String!, $number: Int!, $cursor: String) {
        repository(owner: $owner, name: $name) {
          issue(number: $number) {
            timelineItems(
              first: 100,
              after: $cursor,
              itemTypes: [
                CROSS_REFERENCED_EVENT,
                REFERENCED_EVENT,
                CLOSED_EVENT,
                REOPENED_EVENT,
                LABELED_EVENT,
                UNLABELED_EVENT
              ]
            ) {
              nodes {
                __typename
                ... on CrossReferencedEvent {
                  createdAt
                  actor { login }
                  source {
                    __typename
                    ... on PullRequest { number title url mergedAt closedAt }
                    ... on Issue { number title url closedAt }
                  }
                }
                ... on ReferencedEvent {
                  createdAt
                  actor { login }
                  commit { oid url messageHeadline }
                  commitRepository { nameWithOwner }
                }
                ... on ClosedEvent {
                  createdAt
                  actor { login }
                  closer {
                    __typename
                    ... on PullRequest { number title url mergedAt closedAt }
                    ... on Commit { oid url messageHeadline }
                  }
                }
                ... on ReopenedEvent {
                  createdAt
                  actor { login }
                }
                ... on LabeledEvent {
                  createdAt
                  actor { login }
                  label { name }
                }
                ... on UnlabeledEvent {
                  createdAt
                  actor { login }
                  label { name }
                }
              }