Resolve parent path in npm script to set node environmet variable

Question

I'm trying to resolve a parent path in a npm script to set a node environment variable.

So, given this folder strucure

I need to access paas folder from src to get configuration.yml path.

My index.js is currently setting this variable value like so.

index.js

process.env.CONFIG_FILE_PATH = path.resolve(process.cwd(), '../paas/configmap.yml');

and the value is setted to something like C:/my-user/projects/project-name/paas/configuration.yml (using windows)

What I need is to remove that code from index.js, as this variable is only needed when I run the project locally, and move it to a npm script to set the variable value dynamically.

package.json

{
    "scripts" : {
        "start" : cross-env CONFIG_FILE_PATH=resolve.configuration.path node index.js
    }
}

Is there any way (windows or cross env) to achieve the same result as path.resolve, straight in a npm script?