fix: correct upcoming release date after patch releases (#557)

fix: correct next release date after patch releases

src/_data/stats.json

@@ -4,10 +4,10 @@
  "currentVersion": "v9.1.1",
  "currentVersionDate": "2024-04-22T19:23:14Z",
  "currentVersionIsPrerelease": false,
- "stars": 24270,
- "lastCommitDate": "2024-04-23T02:08:58Z",
- "projectDependents": 19255405,
+ "stars": 24271,
+ "lastCommitDate": "2024-04-23T10:56:02Z",
+ "projectDependents": 19264226,
  "weeklyDownloads": 38275199,
  "nextVersion": "v9.2.0",
- "nextVersionDate": "2024-05-10"
+ "nextVersionDate": "2024-05-03"
 }

tools/fetch-stats.js

@@ -194,9 +194,21 @@ async function fetchGitHubNetworkStats() {
 
  stats.nextVersion = `v${nextVersion}`;
 
- // approximate next release date
- stats.nextVersionDate = DateTime.fromISO(stats.currentVersionDate)
- .plus({ weeks: 2 }).endOf("week").minus({ days: 2 }).toISODate();
+ /*
+ * Calculate next release date.
+ * We do scheduled releases every two weeks, on Fridays.
+ * One of the scheduled release dates was Friday, 2024-01-12. We'll use that date as the baseline.
+ * So, all planned releases are expected to be on 2024-01-12 + n * 14 days.
+ * Now we'll find the first such day after the current version date.
+ */
+ const baseDate = DateTime.fromISO("2024-01-12");
+ const currentVersionDate = DateTime.fromISO(stats.currentVersionDate);
+
+ stats.nextVersionDate = currentVersionDate
+ .plus({
+ days: 14 - currentVersionDate.diff(baseDate, "days").days % 14
+ })
+ .toISODate();
 
  await fs.writeFile(statsFilePath, JSON.stringify(stats, null, 4), { encoding: "utf8" });