[Solved] Given this Angular module code, what will be the value of AppModule.bootstrap.length?... Given this Angular module code, what will be the value of AppModule.bootstrap.length? | Angular

Angular - Modules

Given this Angular module code, what will be the value of AppModule.bootstrap.length?

@NgModule({
  declarations: [AppComponent],
  imports: [BrowserModule],
  bootstrap: [AppComponent]
})
export class AppModule {}

AError at runtime

B1

Cundefined

D0

Step-by-Step Solution

Solution:

Step 1: Examine class properties after decorator
The @NgModule decorator processes metadata internally but does not add a 'bootstrap' static property to the AppModule class.
Step 2: Evaluate AppModule.bootstrap.length
AppModule.bootstrap is undefined. Attempting .length on undefined throws a TypeError at runtime.
Final Answer:
Error at runtime -> Option A
Quick Check:
undefined.length = runtime error [OK]

Quick Trick: Decorators don't add class properties directly [OK]

Common Mistakes:

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Given this Angular module code, what will be the value of AppModule.bootstrap.length?