fix: allow repeated platform checks and unify Alpha metric formatting

2026-09-12 22:42:37 +08:00
parent c18960946b
commit f3eb239e1a
8 changed files with 196 additions and 17 deletions
@@ -0,0 +1,12 @@
+/** Format the five headline Alpha metrics for display; stored/filter values stay raw.
+ * Unsupported fields return undefined so callers can retain their existing format.
+ */
+export function formatAlphaMetric(
+  key: string,
+  value: unknown,
+): string | undefined {
+  const percent = key === "turnover" || key === "returns" || key === "drawdown";
+  if (!percent && key !== "sharpe" && key !== "fitness") return undefined;
+  if (typeof value !== "number" || !Number.isFinite(value)) return "—";
+  return percent ? `${(value * 100).toFixed(2)}%` : value.toFixed(2);
+}