Merge front end repo

1 files changed, 14 insertions, 0 deletions

diff --git a/Timeline/ClientApp/src/app/utilities/rxjs.ts b/Timeline/ClientApp/src/app/utilities/rxjs.ts
new file mode 100644
index 00000000..1be49164
--- /dev/null
+++ b/Timeline/ClientApp/src/app/utilities/rxjs.ts
@@ -0,0 +1,14 @@
+import { OperatorFunction } from 'rxjs';

+import { catchError } from 'rxjs/operators';

+

+export function convertError<T, NewError>(

+  oldErrorType: { new (...args: never[]): unknown },

+  newErrorType: { new (): NewError }

+): OperatorFunction<T, T> {

+  return catchError((error) => {

+    if (error instanceof oldErrorType) {

+      throw new newErrorType();

+    }

+    throw error;

+  });

+}