• Laravel Mix Version: 6.0.43 (npm list --depth=0)
• Node Version (node -v): 17.2.0
• NPM Version (npm -v): 8.1.4
• OS: Ubuntu 20.04

Description:

mix.setPublicPath() shaves off the first portion of the output path of mix.js() only if it set to a variant of "one directory up". So the same goes for

mix.setPublicPath("../")
mix.setPublicPath("..")
mix.setPublicPath(path.resolve(__dirname, "../"))
mix.setPublicPath(path.resolve(__dirname, "../../root"))

Steps To Reproduce:

Having a project structure like this:

root
 - /admin
    - /resources
    - /assets
    - webpack.mix.js

With a Mix setup like this:

mix.setPublicPath("../")
    .js("resources/js/index.js", "admin/assets/js/")
    .css("resources/css/style.css", "admin/assets/css")

creates the following output:

root
  -/admin
    -/assets
      - /css
        - style.css
  -/assets
    - /js
      -  index.js

What I would expect:

root
  - /admin
    - /assets
      - /css
        - style.css
      - /js
       -  index.js

This does not seem to happen in any other constellation, so mix.setPublicPath("../..") or mix.setPublicPath("foo/bar") work as expected.

Might be related to #3106