Refine start options types

Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>

diff --git a/src/types/Worker.ts b/src/types/Worker.ts
index 4654fdcf6c57b7bf652773d60952ac112a5b6a8b..9638b6ddb90eec10878c3f4dca98b0f85769761c 100644 (file)
--- a/src/types/Worker.ts
+++ b/src/types/Worker.ts
@@ -19,8 +19,8 @@ export interface WorkerOptions {
 }
 
 export interface WorkerStartOptions {
-  workerStartDelay: number;
-  elementStartDelay: number;
+  workerStartDelay?: number;
+  elementStartDelay?: number;
 }
 
 export type WorkerData = JsonType;