gitlab-org--gitlab-foss/app/assets/javascripts/vue_merge_request_widget/queries/permissions.query.graphql

query userPermissionsQuery($projectPath: ID!, $iid: String!) {
  project(fullPath: $projectPath) {
    mergeRequest(iid: $iid) {
      userPermissions {
        canMerge
        pushToSourceBranch
      }
    }
  }
}