You have a module-based Angular app but want to convert a component to standalone. Which error will you encounter if you forget to add imports for used Angular features like CommonModule?

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Angular - Standalone Components

You have a module-based Angular app but want to convert a component to standalone. Which error will you encounter if you forget to add imports for used Angular features like CommonModule?

ATemplate errors like 'ngIf' is not a known property or directive.

BRuntime error: Cannot find module 'CommonModule'.

CNo errors, Angular auto-imports CommonModule.

DCompilation error: Component must be declared in a module.

Step-by-Step Solution

Solution:

Step 1: Understand standalone component imports
Standalone components must explicitly import Angular modules like CommonModule to use directives such as ngIf.
Step 2: Identify error from missing imports
If CommonModule is missing, Angular template compiler reports errors that directives like ngIf are unknown.
Final Answer:
Template errors like 'ngIf' is not a known property or directive. -> Option A
Quick Check:
Missing CommonModule import = template directive errors [OK]

Quick Trick: Standalone needs explicit imports for Angular directives [OK]

Common Mistakes:

Assuming Angular auto-imports CommonModule
Expecting runtime errors instead of template errors
Confusing module declaration errors with import errors

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More Angular Quizzes

You have a module-based Angular app but want to convert a component to standalone. Which error will you encounter if you forget to add imports for used Angular features like CommonModule?

Step 1: Understand standalone component imports

Step 2: Identify error from missing imports

Final Answer:

Quick Check:

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