merged_at is null if the PR is either open, or closed unmerged.
Not 100% certain that field is guaranteed to be populated for every PR on GitHub, regardless of age, but I think it's acceptable to get rid of the second API request in exchange for a small risk of giving slightly incorrect output in a very small number of cases.
merged_atisnullif the PR is either open, or closed unmerged.Not 100% certain that field is guaranteed to be populated for every PR on GitHub, regardless of age, but I think it's acceptable to get rid of the second API request in exchange for a small risk of giving slightly incorrect output in a very small number of cases.