fix: impact metrics formatting (#10715)

frontend/src/component/common/PrettifyLargeNumber/PrettifyLargeNumber.tsx

@@ -1,8 +1,8 @@
 import type { FC } from 'react';
-import millify from 'millify';
 import { Tooltip } from '@mui/material';
 import { LARGE_NUMBER_PRETTIFIED } from 'utils/testIds';
 import { ConditionallyRender } from '../ConditionallyRender/ConditionallyRender.tsx';
+import { prettifyLargeNumber } from './formatLargeNumber.js';
 
 interface IPrettifyLargeNumberProps {
     /**
@@ -25,15 +25,6 @@ interface IPrettifyLargeNumberProps {
     'data-loading'?: string;
 }
 
-export const prettifyLargeNumber =
-    (threshold: number = 1_000_000, precision: number = 2) =>
-    (value: number) => {
-        if (value < threshold) {
-            return value.toLocaleString();
-        }
-        return millify(value, { precision });
-    };
-
 export const PrettifyLargeNumber: FC<IPrettifyLargeNumberProps> = ({
     value,
     threshold = 1_000_000,

frontend/src/component/common/PrettifyLargeNumber/formatLargeNumber.ts

@@ -0,0 +1,10 @@
+import millify from 'millify';
+
+export const prettifyLargeNumber =
+    (threshold: number = 1_000_000, precision: number = 2) =>
+    (value: number) => {
+        if (value < threshold) {
+            return value.toLocaleString();
+        }
+        return millify(value, { precision });
+    };

frontend/src/component/impact-metrics/ChartConfigModal/ImpactMetricsControls/ImpactMetricsControls.tsx

@@ -5,7 +5,7 @@ import { SeriesSelector } from './SeriesSelector/SeriesSelector.tsx';
 import { RangeSelector } from './RangeSelector/RangeSelector.tsx';
 import { ModeSelector } from './ModeSelector/ModeSelector.tsx';
 import type { ChartFormState } from '../../hooks/useChartFormState.ts';
-import { getMetricType } from '../../utils.ts';
+import { getMetricType } from '../../metricsFormatters.ts';
 
 export type ImpactMetricsControlsProps = {
     formData: ChartFormState['formData'];

frontend/src/component/impact-metrics/ImpactMetricsChart.tsx

@@ -7,7 +7,11 @@ import {
 } from '../insights/components/LineChart/LineChart.tsx';
 import { useImpactMetricsData } from 'hooks/api/getters/useImpactMetricsData/useImpactMetricsData';
 import { usePlaceholderData } from '../insights/hooks/usePlaceholderData.js';
-import { getDisplayFormat, getTimeUnit, formatLargeNumbers } from './utils.ts';
+import {
+    getDisplayFormat,
+    getTimeUnit,
+    formatLargeNumbers,
+} from './metricsFormatters.js';
 import { fromUnixTime } from 'date-fns';
 import { useChartData } from './hooks/useChartData.ts';
 import type { AggregationMode } from './types.ts';

frontend/src/component/impact-metrics/hooks/useChartData.ts

@@ -1,7 +1,7 @@
 import { useMemo } from 'react';
 import { useTheme } from '@mui/material';
 import type { ImpactMetricsSeries } from 'hooks/api/getters/useImpactMetricsData/useImpactMetricsData';
-import { getSeriesLabel } from '../utils.ts';
+import { getSeriesLabel } from '../metricsFormatters.ts';
 
 const getColorStartingIndex = (modulo: number, series?: string): number => {
     if (!series || series.length === 0 || modulo <= 0) {

frontend/src/component/impact-metrics/hooks/useChartFormState.ts

@@ -2,7 +2,7 @@ import { useState, useEffect } from 'react';
 import { useImpactMetricsData } from 'hooks/api/getters/useImpactMetricsData/useImpactMetricsData';
 import type { AggregationMode, ChartConfig } from '../types.ts';
 import type { ImpactMetricsLabels } from 'hooks/api/getters/useImpactMetricsData/useImpactMetricsData';
-import { getDefaultAggregation, getMetricType } from '../utils.ts';
+import { getDefaultAggregation, getMetricType } from '../metricsFormatters.ts';
 
 type UseChartConfigParams = {
     open: boolean;

frontend/src/component/impact-metrics/metricsFormatters.test.ts

@@ -0,0 +1,41 @@
+import { formatLargeNumbers } from './metricsFormatters.js';
+
+describe('formatLargeNumbers', () => {
+    it('formats small numbers with locale formatting', () => {
+        expect(formatLargeNumbers(0)).toBe('0');
+        expect(formatLargeNumbers(999)).toBe('999');
+    });
+
+    it('formats thousands correctly', () => {
+        expect(formatLargeNumbers(1000)).toBe('1k');
+        expect(formatLargeNumbers(1200)).toBe('1.2k');
+        expect(formatLargeNumbers(1400)).toBe('1.4k');
+        expect(formatLargeNumbers(1600)).toBe('1.6k');
+        expect(formatLargeNumbers(5000)).toBe('5k');
+        expect(formatLargeNumbers(9500)).toBe('9.5k');
+        expect(formatLargeNumbers(10000)).toBe('10k');
+        expect(formatLargeNumbers(999000)).toBe('999k');
+    });
+
+    it('formats millions correctly', () => {
+        expect(formatLargeNumbers(1000000)).toBe('1M');
+        expect(formatLargeNumbers(1500000)).toBe('1.5M');
+        expect(formatLargeNumbers(2700000)).toBe('2.7M');
+        expect(formatLargeNumbers(5000000)).toBe('5M');
+        expect(formatLargeNumbers(9900000)).toBe('9.9M');
+        expect(formatLargeNumbers(10000000)).toBe('10M');
+    });
+
+    it('formats billions correctly', () => {
+        expect(formatLargeNumbers(1000000000)).toBe('1B');
+        expect(formatLargeNumbers(1500000000)).toBe('1.5B');
+        expect(formatLargeNumbers(10000000000)).toBe('10B');
+        expect(formatLargeNumbers(999000000000)).toBe('999B');
+    });
+
+    it('formats trillions correctly', () => {
+        expect(formatLargeNumbers(1000000000000)).toBe('1T');
+        expect(formatLargeNumbers(2500000000000)).toBe('2.5T');
+        expect(formatLargeNumbers(10000000000000)).toBe('10T');
+    });
+});

frontend/src/component/impact-metrics/metricsFormatters.ts

@@ -1,3 +1,5 @@
+import { prettifyLargeNumber } from '../common/PrettifyLargeNumber/formatLargeNumber.js';
+
 export const getTimeUnit = (timeRange: string) => {
     switch (timeRange) {
         case 'hour':
@@ -52,13 +54,9 @@ export const getSeriesLabel = (metric: Record<string, string>): string => {
 };
 
 export const formatLargeNumbers = (value: number): string => {
-    if (value >= 1000000) {
-        return `${(value / 1000000).toFixed(0)}M`;
-    }
-    if (value >= 1000) {
-        return `${(value / 1000).toFixed(0)}k`;
-    }
-    return value.toString();
+    const formatter = prettifyLargeNumber(1000, 1);
+    const result = formatter(value);
+    return result.replace(/K/g, 'k');
 };
 
 export const getMetricType = (seriesName: string) => {

frontend/src/component/insights/sections/LifecycleInsights.tsx

@@ -4,10 +4,8 @@ import { FilterItemParam } from 'utils/serializeQueryParams';
 import { InsightsSection } from 'component/insights/sections/InsightsSection';
 import { LifecycleChart } from '../components/LifecycleChart/LifecycleChart.tsx';
 import { styled, useTheme } from '@mui/material';
-import {
-    prettifyLargeNumber,
-    PrettifyLargeNumber,
-} from 'component/common/PrettifyLargeNumber/PrettifyLargeNumber.tsx';
+import { prettifyLargeNumber } from 'component/common/PrettifyLargeNumber/formatLargeNumber.js';
+import { PrettifyLargeNumber } from 'component/common/PrettifyLargeNumber/PrettifyLargeNumber.tsx';
 import { FeatureLifecycleStageIcon } from 'component/common/FeatureLifecycle/FeatureLifecycleStageIcon.tsx';
 import { normalizeDays } from './normalize-days.ts';
 import useLoading from 'hooks/useLoading.ts';

frontend/src/component/insights/sections/normalize-days.ts

@@ -1,4 +1,4 @@
-import { prettifyLargeNumber } from 'component/common/PrettifyLargeNumber/PrettifyLargeNumber';
+import { prettifyLargeNumber } from 'component/common/PrettifyLargeNumber/formatLargeNumber.js';
 
 const prettifyNumber = prettifyLargeNumber(1000, 2);