Node Js

Question 1

What does –inspect?

Answer 1

Enables the Node.js debugger on localhost:9229.

Question 2

What does —-env-file <path>?</path>

Answer 2

Loads environment variables from a .env file.

Question 3

What does –check?

Answer 3

Checks the syntax of the script without executing it.

Question 4

What does –require?

Answer 4

Preloads a specified module before executing the script (similar to require in code).

Question 5

What does –max-old-space-size=<size>?</size>

Answer 5

Sets the maximum memory size for the V8 heap (default: ~1.5 GB)

Question 6

How do you read args from the CLI?

Answer 6

process.argv

Question 7

How do you use readline lib?

Answer 7

readline.createInterface({input, output}), and readline.question(‘question’, callback)