discover-vbb-stations

Discover VBB stations by querying departures. It tries to find all stations that all trains known by VBB stop at. Analogous to discover-db-stations.

Installing

npm install discover-vbb-stations

Usage

using the command line

Using npx:

npx discover-vbb-stations [station-id] >stations.ndjson

using JavaScript

const walk = require('discover-vbb-stations')

walk(stationId) // where to start
.on('data', console.log)
.on('error', console.error)

walk() returns a readable stream in object mode. It emits the following events:

• data: a new station that has been discovered
• stats: an object with the following keys:
  • stations: the number of stations discovered
  • requests: the number of requests sent
  • queued: the number of queued station IDs
• edge: a connection between two stations, with the following keys:
  • source: a Friendly Public Transport Format 1.0.1 station object
  • target: a Friendly Public Transport Format 1.0.1 station object
  • duration: time to travel, in milliseconds
  • line: an vbb-hafas line object

API

walk(stationId, [opt])

stationId must be a string and a valid IBNR.

opt may have the following keys. It will be passed into queue().

• concurrency: number of requests run in parallel – default: 2
• timeout: timeout for a single job in milliseconds – default: 10000

Contributing

If you have a question, found a bug or want to propose a feature, have a look at the issues page.