Allow GBp in currency code validation

apps/api/src/validators/is-currency-code.ts

@@ -1,4 +1,4 @@
-import { DERIVED_CURRENCIES } from '@ghostfolio/common/config';
+import { isDerivedCurrency } from '@ghostfolio/common/helper';
 
 import {
   registerDecorator,
@@ -28,17 +28,11 @@ export class IsExtendedCurrencyConstraint
     return '$property must be a valid ISO4217 currency code';
   }
 
-  public validate(currency: any) {
-    // Return true if currency is a standard ISO 4217 code or a derived currency
+  public validate(currency: string) {
+    // Return true if currency is a derived currency or a standard ISO 4217 code
     return (
-      this.isUpperCase(currency) &&
-      (isISO4217CurrencyCode(currency) ||
-        [
-          ...DERIVED_CURRENCIES.map((derivedCurrency) => {
-            return derivedCurrency.currency;
-          }),
-          'USX'
-        ].includes(currency))
+      isDerivedCurrency(currency) ||
+      (this.isUpperCase(currency) && isISO4217CurrencyCode(currency))
     );
   }
 

libs/common/src/lib/helper.ts

@@ -349,7 +349,7 @@ export function isDerivedCurrency(aCurrency: string) {
     return true;
   }
 
-  return DERIVED_CURRENCIES.find(({ currency }) => {
+  return DERIVED_CURRENCIES.some(({ currency }) => {
     return currency === aCurrency;
   });
 }