Function fetchDiff

mods/diff/hooks/git/fetch-diff.ts:16–33

(
  deps: Types.GitDeps,
  mode: Types.BaseMode,
)

 * @returns the outcome
 */
export async function fetchDiff(
  deps: Types.GitDeps,
  mode: Types.BaseMode,
): Promise<Types.FetchOutcome> {
  const isBusy = await Probes.isTransient(
    deps.entryKindsOf,
    deps.repository.gitDir,
  )

  if (isBusy) {
    return { kind: 'unavailable' }
  }

  const context = Tiers.fetchContextOf(deps, mode)
  const isBranch = mode === 'branch'

  return isBranch ? Tiers.branchTier(context) : Tiers.workingTreeTier(context)
}