phaser Pixi v4 filters in Phaser

[warzonak]

I would like to use Pixi v4 filters in Phaser node application.
I´ve read this tutorial: http://phaser.io/examples/v2/filters/pixi-filter and all posts about this that I´ve found, but I still don´t know, how am I supposed to load the filter script.

For example the outline filter: https://github.com/pixijs/pixi-filters/tree/master/filters/outline

game.load.script('filter', 'outline/src/OutlineFilter.js');

However, this is not working and I just can't figure out, how to load it correctly. (The path is correct.)
Thank you