Lodash Library Test - Command Prompt Error

Hi everyone!

I am experiencing some issues with the Lodash Library Project (https://www.codecademy.com/paths/web-development/tracks/web-dev-js-arrays-loops-objects/modules/pjs-javascript-capstone/projects/lodash). Particularly, when I implement the tests required at point 2 I get this error on my command prompt.

Anyone who could help me understand what I am doing wrong?

Thank you!

Hey,

It’d be helpful if you could include some of your code from where the error occurred. I know what the error means, but without the code, I’m not sure exactly what went wrong.

Thanks

So far this is the code I have written:

Immagine1

When I go to the command prompt to test one of the methods I get the type of error I have posted in the first post (namely, ReferenceError: _ is not defined.

When I test it on the Codecademy environement it goes smoothly, but I’d also like to learn how to test it locally.