Create update-prs.js

Author: mfranzke

.github/scripts/update-prs.js

@@ -0,0 +1,34 @@
+/* Fetch all open PRs and updates them with main branch.*/
+
+const updatePrs = async ({ github, context }) => {
+	const { repo, owner } = context.repo;
+	const pulls = await github.rest.pulls.list({
+		owner,
+		repo,
+		state: 'open',
+		base: 'main',
+		per_page: 100
+	});
+
+	const nonDraftPulls = pulls?.data?.filter((pr) => !pr.draft);
+	let updatedBranches = 0;
+
+	if (nonDraftPulls?.length > 0) {
+		for (const pr of nonDraftPulls) {
+			try {
+				await github.rest.pulls.updateBranch({
+					owner,
+					repo,
+					pull_number: pr.number
+				});
+				updatedBranches++;
+			} catch (e) {
+				console.error(e);
+			}
+		}
+	}
+
+	return `Updated branches: ${updatedBranches}/${nonDraftPulls.length}`;
+};
+
+export default updatePrs;