refactor(interfaces): replace type aliases

See microsoft/TypeScript#19198
cartant · Nov 4, 2017 · 074f95e · 074f95e
1 parent cff9dfa
commit 074f95e
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/interfaces.ts b/src/interfaces.ts
@@ -1,9 +1,9 @@
 import { Observable } from './Observable';
 
-export type UnaryFunction<T, R> = (source: T) => R;
+export interface UnaryFunction<T, R> { (source: T): R; }
 
-export type OperatorFunction<T, R> = UnaryFunction<Observable<T>, Observable<R>>;
+export interface OperatorFunction<T, R> extends UnaryFunction<Observable<T>, Observable<R>> {}
 
 export type FactoryOrValue<T> = T | (() => T);
 
-export type MonoTypeOperatorFunction<T> = OperatorFunction<T, T>;
+export interface MonoTypeOperatorFunction<T> extends OperatorFunction<T, T> {}