What is the reason for the mention of Webpack 1.2 in vacancies, while version 4 already exists?

Question

webpack

In later versions, there is nothing worthy of attention and the apschiness does not see the point in updating?

Answer 1

do not take to heart what they write in vacancies. The team leader grunted in a hurry, the clerk copy-pasted some left piece, and here it is.
If you really need to pull some kind of legacy, they will tell you about it in interviews. And you don’t need to learn the old in advance, it will fall off soon anyway.

Answer 2

As an option - the project is written using Webpack 1 or 2, so they want it

Answer 3

https://jsfiddle.net/y43juouf/2/