chore: import upstream snapshot with attribution

2026-07-13 13:32:57 +08:00
commit cd420f9332
4811 changed files with 884702 additions and 0 deletions
@@ -0,0 +1,48 @@
+type Options<R> = {
+  startDate: Date;
+  endDate: Date;
+  window?: "MINUTE" | "HOUR" | "DAY";
+  data: { date: Date; value?: R }[];
+};
+
+export function createTimeSeriesData<R>({ startDate, endDate, window = "DAY", data }: Options<R>) {
+  const outputData: Array<{ date: Date; value?: R }> = [];
+  const periodLength = periodLengthMs(window);
+  const periodCount = Math.round((endDate.getTime() - startDate.getTime()) / periodLength);
+
+  for (let i = 0; i < periodCount; i++) {
+    const periodStart = new Date(startDate);
+    periodStart.setTime(periodStart.getTime() + i * periodLength);
+    const periodEnd = new Date(startDate);
+    periodEnd.setTime(periodEnd.getTime() + (i + 1) * periodLength);
+
+    const foundData = data.find((d) => {
+      const time = d.date.getTime();
+      const inRange = time >= periodStart.getTime() && time < periodEnd.getTime();
+      return inRange;
+    });
+    if (!foundData) {
+      outputData.push({
+        date: periodStart,
+      });
+    } else {
+      outputData.push({
+        date: periodStart,
+        value: foundData.value,
+      });
+    }
+  }
+
+  return outputData;
+}
+
+function periodLengthMs(window: "MINUTE" | "HOUR" | "DAY") {
+  switch (window) {
+    case "MINUTE":
+      return 60_000;
+    case "HOUR":
+      return 3_600_000;
+    case "DAY":
+      return 86_400_000;
+  }
+}