fix(mite-list): adds thousand seperators to numbers

Author: Ephigenia

source/lib/formater.js

@@ -80,19 +80,23 @@ module.exports = {
     return hours + ':' + remainingMinutes;
   },
 
-  number(value, precision) {
+  number(value, precision = 2) {
     if (typeof value !== 'number') {
       throw new TypeError('Expected value to be a of type Number');
     } else if (isNaN(value)) {
       throw new Error('Expected value to be a valid Number not NaN');
     } else if (!isFinite(value)) {
       throw new Error('Expecte value not to be a finite value.');
     }
-    precision = precision || 2;
-    return String(value.toFixed(precision));
+    const options = {
+      minimumFractionDigits: precision,
+      maximumFractionDigits: precision,
+    };
+    const locale = 'en-EN';
+    return value.toLocaleString(locale, options);
   },
 
-  price(value, precision) {
+  price(value, precision = 2) {
     precision = precision || 2;
     return String(value.toFixed(precision));
   },

source/lib/formater.test.js

@@ -58,6 +58,9 @@ describe('formater', () => {
     it('can have a differenct precision', () => {
       expect(formater.number(2.128391, 4)).to.equal('2.1284');
     });
+    it('adds thousand seperator', () => {
+      expect(formater.number(29828172.21)).to.equal('29,828,172.21');
+    });
     it('throws an exception when the first argument is not a number', () => {
       expect(() => formater.number(null)).to.throw(TypeError);
       expect(() => formater.number(8/0)).to.throw(Error);