feat: rss-memory metric (#57)

lib/compare.js

@@ -20,7 +20,12 @@ function getOverThresholdTags(diff) {
 			if (typeof data.baseMean !== 'number') {
 				return null;
 			}
-			if (data.currentMean / data.baseMean < 1.05) {
+			if (tag.endsWith("memory")) {
+				if (data.currentMean / data.baseMean < 1.3) {
+					// The memory usage is unstable (with fluctuations of approximately 20%) during Hot Module Replacement (HMR), so it won't be counted for now.
+					return null;
+				}
+			} else if (data.currentMean / data.baseMean < 1.05) {
 				return null;
 			}
 			return tag;
@@ -76,7 +81,7 @@ async function getResults(date, index, benchmarkDirectory) {
 }
 
 export async function compare(base, current, benchmarkDirectory) {
-	const compareMetric = ["exec"];
+	const compareMetric = ["exec", "rss memory"];
 
 	const index = await fetchIndex();
 	if (base === "latest") {