fix: nan total amount bug

leather-io · Jan 8, 2024 · 8c37393 · 8c37393
1 parent d4c99d5
commit 8c37393
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diff --git a/src/app/common/math/calculate-averages.spec.ts b/src/app/common/math/calculate-averages.spec.ts
@@ -3,6 +3,9 @@ import BigNumber from 'bignumber.js';
 import { calculateMeanAverage } from './calculate-averages';
 
 describe(calculateMeanAverage.name, () => {
+  test('it calculates average of 0', () =>
+    expect(calculateMeanAverage([]).toString()).toEqual('0'));
+
   test('it calculates averages of 1', () =>
     expect(calculateMeanAverage([new BigNumber(1)]).toString()).toEqual('1'));
 

diff --git a/src/app/common/math/calculate-averages.ts b/src/app/common/math/calculate-averages.ts
@@ -3,6 +3,7 @@ import BigNumber from 'bignumber.js';
 import { initBigNumber } from './helpers';
 
 export function calculateMeanAverage(numbers: BigNumber[] | number[]) {
+  if (numbers.length === 0) return new BigNumber(0);
   return numbers
     .map(initBigNumber)
     .reduce((acc, price) => acc.plus(price), new BigNumber(0))