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-rw-r--r--stories/angular/helpers/keys.pipe.ts13
1 files changed, 13 insertions, 0 deletions
diff --git a/stories/angular/helpers/keys.pipe.ts b/stories/angular/helpers/keys.pipe.ts
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+++ b/stories/angular/helpers/keys.pipe.ts
@@ -0,0 +1,13 @@
+import { Pipe, PipeTransform } from '@angular/core';
+
+@Pipe({name: 'keys'})
+export class KeysPipe implements PipeTransform {
+ transform(value, args:string[]) : any {
+ let keys = [];
+ for (let key in value) {
+ keys.push(key);
+ }
+ return keys;
+ }
+}
+