fix trending percent

Author: nemanjam

components/charts/line-chart-multiple.tsx

@@ -154,11 +154,15 @@ const setUnit = (chartData: LineChartMultipleData[], yAxisUnit: string) => {
 };
 
 const getFirstTimeCompaniesTrendingPercent = (chartData: LineChartMultipleData[]): number => {
-  if (!(chartData.length > 1)) return 0;
+  const chartDataLength = chartData.length;
+  if (!(chartDataLength > 1)) return 0;
+
+  const lastMonth = chartData[chartDataLength - 1];
+  const secondLastMonth = chartData[chartDataLength - 2];
 
   const percent = Math.round(
-    ((chartData[0].firstTimeCompaniesCount - chartData[1].firstTimeCompaniesCount) /
-      chartData[1].firstTimeCompaniesCount) *
+    ((lastMonth.firstTimeCompaniesCount - secondLastMonth.firstTimeCompaniesCount) /
+      secondLastMonth.firstTimeCompaniesCount) *
       100
   );
 

docs/working-notes/notes4.md

@@ -5,3 +5,4 @@
     fix first month exception
     add 404 and 500 page
     validate month in page params
+winston singleton

libs/winston.ts

@@ -54,6 +54,7 @@ const consoleCombinedFormats: Logform.Format = combine(
   consoleFormat
 );
 
+// todo: singleton
 const devLogger: Logger = winston.createLogger({
   level: 'debug',
   format: consoleCombinedFormats,