Function fetchDiscussionNodes

packages/scripts/lib/commit-graph.ts:424–477

(
  numbers: number[],
  githubToken: string
)

// token/scope failure that nulls *every* alias, not a per-candidate skip — and
// silently returning `[]` would drop the whole feature on a green run.
export async function fetchDiscussionNodes(
  numbers: number[],
  githubToken: string
): Promise<Discussion[]> {
  if (numbers.length === 0) return []
  const aliases = numbers
    .map(number => `d${number}: discussion(number: ${number}) { number id }`)
    .join('\n')
  const query = `query { repository(owner: "47ng", name: "nuqs") { ${aliases} } }`
  const response = await fetch(
    'https://api.github.com/graphql?fn=fetchDiscussions',
    {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${githubToken}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ query })
    }
  )
  if (!response.ok) {
    throw new Error(
      `fetchDiscussions: GitHub API error ${response.status} ${response.statusText} for [${numbers.join(', ')}]`
    )
  }
  const envelopeSchema = z.object({
    data: z
      .object({
        repository: z.record(z.string(), discussionSchema.nullable()).nullable()
      })
      .nullable(),
    errors: z
      .array(z.object({ type: z.string().optional(), message: z.string() }))
      .optional()
  })
  const envelope = envelopeSchema.safeParse(await response.json())
  if (!envelope.success) {
    throw new Error(
      `fetchDiscussions: unexpected GraphQL response shape for [${numbers.join(', ')}]: ${envelope.error.message}`
    )
  }
  const { data, errors } = envelope.data
  const fatal = (errors ?? []).filter(({ type }) => type !== 'NOT_FOUND')
  if (fatal.length > 0) {
    throw new Error(
      `fetchDiscussions: GraphQL errors for [${numbers.join(', ')}]: ${fatal
        .map(error => error.message)
        .join('; ')}`
    )
  }
  return Object.values(data?.repository ?? {}).filter(
    (node): node is Discussion => node !== null
  )
}

// The closing-issues facet shared by `PR` and `PRClosingIssues`, so
// `collectIssues` serves both discovery paths from the same field.