[Solved] Given this Node.js Lambda code snippet:exports.handler = async () => { return process.env.MY_VAR || 'default'; };If the environment variable MY_VAR is set to hello, what will the function return? | AWS

AWS - Lambda

Given this Node.js Lambda code snippet:

exports.handler = async () => {
  return process.env.MY_VAR || 'default';
};

If the environment variable MY_VAR is set to hello, what will the function return?

A'hello'

B'default'

Cundefined

Dnull

Step-by-Step Solution

Solution:

Step 1: Understand environment variable usage in Node.js
process.env.MY_VAR accesses the environment variable MY_VAR; if set, it returns its value.
Step 2: Evaluate the code with MY_VAR='hello'
Since MY_VAR is set to 'hello', the expression returns 'hello' instead of the default.
Final Answer:
'hello' -> Option A
Quick Check:
Env var set returns its value, not default [OK]

Quick Trick: Env var returns value if set, else default [OK]

Common Mistakes:

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