db-vendo-client/p/readme.md

Profiles

This directory contains specific customisations for each endpoint, called profiles. They parse data from the API differently, add additional information, or enable non-default methods (such as trip) if they are supported.

Each profile has it's own directory. It will be passed into hafas-client and is expected to be in a certain structure:

const createClient = require('hafas-client')
const someProfile = require('hafas-client/p/some-profile')

// create a client with the profile
const client = createClient(dbProfile)

// use it to query data…

If you want to write a profile for an endpoint, check out the writing a profile guide.