IN JAVASCRIPT

Exporting From and Importing to a Module

Read the two statements below. Statement A The same name as defined in the code must be used as the key while adding a property to the object module.exports; otherwise, you will get an error.

Lets take an example to help you understand this better.

let abc = 10; module.exports.xyz = abc; 

This code is not correct and will throw an error because the same key (abc) is not used when exporting the variable named abc. The key added to the object exports has been renamed xyz.

Statement B The same key that is used when exporting something must be used on the object returned by the function require; otherwise, you will either get undefined or some error.

Lets take an example to help you understand this better. Module abc

// assume that the variable named 'someVariable' is already defined module.exports.someKey = someVariable; // variable 'someVariable' is exported via key 'someKey' 

Module xyz

require('./abc').someVariable // accessing exported variable 'someVariable' from the module 'abc' using key 'someVariable' 

The example code above will give undefined. You need to use the same key, someKey, to access the variable named someVariable because someKey is the key added to the object module.exports, and it is the key with which you can access the variable in the imported module. Select the correct option based on the two statements above.

A. Only Statement A is correct.

B. Only Statement B is correct.

C. Statement A and Statement B are both correct.

D. Neither Statement A nor Statement B is correct.