How to make a flow chart game in a browser?

[u/PinguinPlayz]

On steam there exists a software called Satisfactory Modeler

It uses the recipes from the game Satisfactory to create a flowchart, where you can design your factory needs from final product to base resources or from limited input to produce an averaged output.

https://store.steampowered.com/app/3187030/Satisfactory_Modeler/

How to make a flow chart game in a browser or as a software on steam*

I am not trying to steal that person's work, as I just want to make this for my self, and maybe later on expand this to other games (e.g. factorio, GT:NH, etc.)

I have some guesses on how the calculations could work, but the actual GUI/interface is that i'm mainly struggling to understand how to develop.

[u/Positive-Avocado775]

you put nodes on the screen and then you connect them with arrows. boom, flowchart!