Feature: Sale Analysis is working

Fix: Cashier Checkout multiple entries

bookie/src/app/sales/receive-payment/receive-payment.component.ts

@@ -91,7 +91,7 @@ export class ReceivePaymentComponent {
       (z, i) => array.controls[i].valueChanges.pipe(
         distinctUntilChanged()
       ).subscribe(x => {
-        this.choices[this.type].find(s => s.name == x.name).amount = (x.amount === '' ? 0 : parseInt(x.amount, 10));
+        this.choices[this.type].find(s => s.name === x.name).amount = (x.amount === '' ? 0 : parseInt(x.amount, 10));
         this.balance = this.amount - this.choices[this.type].reduce((a, c) => a + c.amount, 0);
       })
     );