[Solved] How can you combine error event handling with a timeout to kill a child process if it hangs? — Ans: Set a timer after spawn; if timer fires before 'exit', call child.kill();... | Node.js

Node.js - Child Processes

How can you combine error event handling with a timeout to kill a child process if it hangs?

AListen only to 'error' event and kill the process there

BUse try-catch around spawn and kill the process in catch block

CSet a timer after spawn; if timer fires before 'exit', call child.kill(); listen for 'error' to handle kill errors

DSpawn the process with a timeout option that kills automatically

Step-by-Step Solution

Solution:

Step 1: Implement timeout logic
Start a timer after spawning the child process to detect hanging.
Step 2: Kill process if timeout triggers before exit
If the timer fires first, call child.kill() to stop the process.
Step 3: Listen for 'error' event to catch kill failures
Handle any errors from killing the process by listening to 'error'.
Final Answer:
Set a timer after spawn; if timer fires before 'exit', call child.kill(); listen for 'error' to handle kill errors -> Option C
Quick Check:
Timeout + kill + 'error' listener = safe hang handling [OK]

Quick Trick: Use timer + kill + 'error' listener to handle hangs [OK]

Common Mistakes:

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How can you combine error event handling with a timeout to kill a child process if it hangs?