[Solved] Identify the error in this Node.js code using execFile:const { execFile } = require('child_process'); execFile('node', ['-v'], (err, stdout) => { if (err) throw err; console.log(stdout); console.... | Node.js

Node.js - Child Processes

Identify the error in this Node.js code using execFile:

const { execFile } = require('child_process');
execFile('node', ['-v'], (err, stdout) => {
  if (err) throw err;
  console.log(stdout);
  console.error(stderr);
});

ACallback function should not have parameters

BWrong executable name 'node'

CMissing <code>stderr</code> parameter in callback

DexecFile cannot run 'node' command

Step-by-Step Solution

Solution:

Step 1: Check callback parameters
The callback for execFile should have three parameters: error, stdout, and stderr.
Step 2: Identify missing parameter usage
The code uses stderr but does not declare it in the callback parameters, causing a ReferenceError.
Final Answer:
Missing stderr parameter in callback -> Option C
Quick Check:
Callback must include stderr to use it = A [OK]

Quick Trick: Callback needs error, stdout, stderr parameters [OK]

Common Mistakes:

Forgetting stderr parameter in callback
Assuming execFile can't run node
Using wrong number of callback arguments

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More Node.js Quizzes

Identify the error in this Node.js code using execFile:

Step 1: Check callback parameters

Step 2: Identify missing parameter usage

Final Answer:

Quick Check:

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