diff --git a/src/compiler/interfaces.ts b/src/compiler/interfaces.ts
index c9eb9e0236..73be74bef9 100644
--- a/src/compiler/interfaces.ts
+++ b/src/compiler/interfaces.ts
@@ -46,7 +46,7 @@ interface BaseDirective extends BaseNode {
 	modifiers: string[];
 }
 
-export interface Transition extends BaseDirective{
+export interface Transition extends BaseDirective {
 	type: 'Transition';
 	intro: boolean;
 	outro: boolean;