Why doesn't the path from the file work without the path module?

Question

Node.js

There is a subfolder with a file in it.
When I try to go up to the root '../../folder/foo.js', I get an error that there is no such file.
But when path.join(__dirname, '../../folder/foo.js')- finds the file.
Why can you do without it path?

Answer 1

It is important to know how you are accessing the file. But I'm ready to assume that this is something like fs.readFile. If you pass a relative path to most fs module functions, the file will be resolved relative to the project's working directory. The project's working directory can be found by running process.cwd().
The working directory of a project usually does not change from module to module.