From d2bdafd5976cfadb67698545e0d578e4c8c77686 Mon Sep 17 00:00:00 2001
From: Matthew Heidemann <matthew.heidemann@lightstep.com>
Date: Wed, 4 Sep 2024 08:20:07 -0600
Subject: [PATCH] Updated note

---
 src/preprocessors/timeseries.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/preprocessors/timeseries.ts b/src/preprocessors/timeseries.ts
index 5702a46..c685cc5 100644
--- a/src/preprocessors/timeseries.ts
+++ b/src/preprocessors/timeseries.ts
@@ -139,8 +139,9 @@ export function createTimestampMap(timestamps: number[]): Map<number, number> {
   return timestampToIndexMap;
 }
 
-// TODO: remove when Grafana 10 is the minimum supported version
 function legenedFormatter(legend = "", labels: Labels) {
+  // nb: We're slightly divergent from `renderLegendFormat` available in v10+
+  // since they just repeat the key if a label value is undefined
   const aliasRegex = /\{\{\s*(.+?)\s*\}\}/g;
   return legend.replace(aliasRegex, (_, group) => (labels[group] ? labels[group] : "<undefined>"));
 }