[Solved] Find the mistake in this Promise error handling:fetchData() .then(data => process(data)) .catch(() => console.log('Error:', error)); | Node.js

Node.js - Error Handling Patterns

Find the mistake in this Promise error handling:

fetchData()
  .then(data => process(data))
  .catch(() => console.log('Error:', error));

AUsing then before catch is invalid.

Bprocess should be inside catch, not then.

CMissing error parameter in catch callback.

DConsole.log syntax is incorrect.

Step-by-Step Solution

Solution:

Step 1: Check catch callback parameters
The catch callback must declare an error parameter to access the error object.
Step 2: Analyze catch usage
Here, catch uses error variable without declaring it, causing ReferenceError.
Final Answer:
Missing error parameter in catch callback. -> Option C
Quick Check:
Always declare error parameter in catch callback [OK]

Quick Trick: Declare error parameter in catch to access error info [OK]

Common Mistakes:

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