Move 0 check to delaySettings

src/browserContext.ts

@@ -93,7 +93,7 @@ export class BrowserContext extends platform.EventEmitter {
   }
 
   setDefaultDelay(delay: number) {
-    this._delaySettings.setDefaultDelay(delay === 0 ? null : delay);
+    this._delaySettings.setDefaultDelay(delay);
   }
 
   async pages(): Promise<Page[]> {

src/delaySettings.ts

@@ -23,8 +23,11 @@ export class DelaySettings {
     this._parent = parent;
   }
 
-  setDefaultDelay(delay: null | number) {
-    this._defaultDelay = delay;
+  setDefaultDelay(delay: number) {
+    if (delay === 0)
+      this._defaultDelay = null;
+    else
+      this._defaultDelay = delay;
   }
 
   delay(): null | number {

src/page.ts

@@ -211,7 +211,7 @@ export class Page extends platform.EventEmitter {
   }
 
   setDefaultDelay(delay: number) {
-    this._delaySettings.setDefaultDelay(delay === 0 ? null : delay);
+    this._delaySettings.setDefaultDelay(delay);
   }
 
   async $(selector: string): Promise<dom.ElementHandle<Element> | null> {