initial commit

src/app/shared/currency-format.pipe.ts

@@ -0,0 +1,27 @@
+import { Pipe, PipeTransform } from '@angular/core';
+import { DecimalPipe } from '@angular/common';
+
+@Pipe({name: 'currencyFormat'})
+export class CurrencyFormatPipe implements PipeTransform {
+  constructor(private decimalPipe: DecimalPipe) {
+  }
+
+  transform(amount: number, precision: number, currency = 'USD'): string {
+    if(amount === null || amount === undefined) {
+      return '';
+    }
+
+    let prefix = amount < 0 ? '-' : '';
+
+    if(currency === 'USD') {
+      prefix += '$';
+    }
+
+    let minDigits = Math.min(2, precision);
+    
+    return prefix + 
+      this.decimalPipe.transform(
+        Math.abs(amount) / Math.pow(10, precision),
+        '1.' + minDigits + '-' + precision);
+  }
+}