[Solved] This code snippet causes a runtime error:if (featureToggle.isEnabled("newFeature")) { launchNewFeature(); } else { launchOldFeature(); }What could cause the error? | Microservices

Microservices - Configuration and Secrets Management

This code snippet causes a runtime error:

if (featureToggle.isEnabled("newFeature")) {
  launchNewFeature();
} else {
  launchOldFeature();
}

What could cause the error?

AlaunchNewFeature() is called twice

BfeatureToggle object is null or undefined

CMissing else block

DFeature name is misspelled

Step-by-Step Solution

Solution:

Step 1: Identify runtime error causes
If featureToggle is null or undefined, calling isEnabled causes an error.
Step 2: Evaluate other options
Calling functions twice or missing else block won't cause runtime error here; misspelling feature name usually returns false.
Final Answer:
featureToggle object is null or undefined -> Option B
Quick Check:
Null object causes runtime error [OK]

Quick Trick: Null objects cause runtime errors on method calls [OK]

Common Mistakes:

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This code snippet causes a runtime error: