From 6b8a3f69a4cbd77e679c675a2d61116a6b57ed09 Mon Sep 17 00:00:00 2001
From: David Fecke <david.fecke@eyecook.net>
Date: Fri, 28 Apr 2023 12:57:35 +0200
Subject: [PATCH] feat(transloco-locale): expose default transformers (#435)
 (#641)

---
 docs/docs/plugins/locale.mdx       | 12 ++++++++++--
 libs/transloco-locale/src/index.ts |  2 ++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/docs/docs/plugins/locale.mdx b/docs/docs/plugins/locale.mdx
index 74f24f3ef..fe2fdd882 100644
--- a/docs/docs/plugins/locale.mdx
+++ b/docs/docs/plugins/locale.mdx
@@ -280,13 +280,18 @@ In some cases you might want to customize the localization transformation, to ac
 There are two types of transformers for date and number:
 
 ```ts title="custom-transformer.ts"
-export class CustomDateTransformer implements TranslocoDateTransformer {
+import { DefaultDateTransformer, DefaultNumberTransformer } from '@ngneat/transloco-locale';
+
+export class CustomDateTransformer extends DefaultDateTransformer {
   public transform(date: Date, locale: Locale, options: DateFormatOptions): string {
     return ...
+
+    // Fallback to default transformer
+    return super.transform(date, locale, options);
   }
 }
 
-export class CustomNumberTransformer implements TranslocoNumberTransformer {
+export class CustomNumberTransformer extends DefaultNumberTransformer {
   public transform(
     value: number | string,
     type: NumberTypes,
@@ -294,6 +299,9 @@ export class CustomNumberTransformer implements TranslocoNumberTransformer {
     options: Intl.NumberFormatOptions
   ): string {
     return ...
+    
+    // Fallback to default transformer
+    return super.transform(value, type, locale, options);
   }
 }
 
diff --git a/libs/transloco-locale/src/index.ts b/libs/transloco-locale/src/index.ts
index a7677278d..b3f8fb67d 100644
--- a/libs/transloco-locale/src/index.ts
+++ b/libs/transloco-locale/src/index.ts
@@ -12,6 +12,8 @@ export {
   TRANSLOCO_NUMBER_TRANSFORMER,
   TranslocoDateTransformer,
   TranslocoNumberTransformer,
+  DefaultDateTransformer,
+  DefaultNumberTransformer,
 } from './lib/transloco-locale.transformers';
 export * from './lib/transloco-locale.types';
 export * from './lib/pipes';