I did some reverse engineering of the NSW TrainLink API, so I could find the cheapest day to travel. This repo contains the script I used to do this.

To download dependencies needed for the script:

npm ci

Open fetch.js and set the constants DEP_STATION, ARR_STATION, START_DATE, END_DATE to your desired values.

To run the script:

node .

I welcome any PRs to make this script more robust/flexible/user-friendly.