1 files changed, 22 insertions, 0 deletions
diff --git a/src/utils-format.js b/src/utils-format.js
new file mode 100644
index 0000000..f4eac88
--- /dev/null
+++ b/src/utils-format.js
@@ -0,0 +1,22 @@
+export function formatDuration(ms) {
+    const totalSeconds = Math.max(0, ms / 1000);
+    if (totalSeconds < 60) {
+        return `${totalSeconds.toFixed(2)}s`;
+    }
+
+    const minutes = Math.floor(totalSeconds / 60);
+    const seconds = totalSeconds % 60;
+    return `${minutes}m ${seconds.toFixed(1)}s`;
+}
+
+export function formatWallClock(timestampMs) {
+    return new Intl.DateTimeFormat(undefined, {
+        hour: '2-digit',
+        minute: '2-digit',
+        second: '2-digit',
+    }).format(new Date(timestampMs));
+}
+
+export function formatValue(value) {
+    return Number.isFinite(value) ? value.toFixed(3) : '—';
+}