first commit

.github/scripts/get-release-versions.mjs

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+import semver from 'semver';
+import {
+	getCommitForRef,
+	listTagsPointingAt,
+	RELEASE_PREFIX,
+	RELEASE_TRACKS,
+	stripReleasePrefixes,
+	writeGithubOutput,
+} from './github-helpers.mjs';
+
+/**
+ * Given a list of tag names, return the highest semver tag (keeping the original 'v' prefix),
+ * or "" if none match semver.
+ *
+ * @param {string[]} tags
+ **/
+function highestSemverTag(tags) {
+	const candidates = tags
+		.filter((t) => t.startsWith(RELEASE_PREFIX))
+		.map((t) => ({
+			tag: t,
+			version: stripReleasePrefixes(t),
+		}))
+		.filter(({ version }) => semver.valid(version));
+
+	if (candidates.length === 0) return '';
+
+	candidates.sort((a, b) => semver.rcompare(a.version, b.version));
+	return candidates[0]?.tag;
+}
+
+/**
+ * @param {string} track
+ **/
+function getSemverTagForTrack(track) {
+	const commit = getCommitForRef(track);
+	if (!commit) return '';
+
+	const tags = listTagsPointingAt(commit);
+	return highestSemverTag(tags);
+}
+
+function main() {
+	/** @type { Record<string, string> } */
+	const outputs = {};
+	for (const track of RELEASE_TRACKS) {
+		outputs[track] = getSemverTagForTrack(track);
+	}
+
+	writeGithubOutput(outputs);
+
+	console.log('Current release versions: ');
+	for (const [k, v] of Object.entries(outputs)) {
+		console.log(`${k}: ${v || '(not found)'}`);
+	}
+}
+
+try {
+	main();
+} catch (err) {
+	console.error(String(err?.message ?? err));
+	process.exit(1);
+}