Gherkin Streams

This module contains utilities to use the Gherkin library with streams.

Installation

gherkin-streams has 3 peer dependencies: @cucumber/gherkin, @cucumber/messages and @cucumber/message-streams.

You need to have @cucumber/gherkin and@cucumber/message-streams in your dependencies, @cucumber/messages is actually installed automatically with @cucumber/gherkin.

npm install @cucumber/gherkin-streams @cucumber/gherkin @cucumber/message-streams

Usage

import { GherkinStreams } from '@cucumber/gherkin-streams'

const options = {
  includeSource: true,
  includeGherkinDocument: true,
  includePickles: true,
}
const stream = GherkinStreams.fromPaths(['features/hello.feature'])

// Pipe the stream to another stream that can read messages.
stream.pipe(...)

Shortening URIs with relativeTo

You can include relativeTo option to avoid emitting longer or absolute URIs, instead making them only relative to the current working directory (or whatever makes sense for your use case):

import { GherkinStreams } from '@cucumber/gherkin-streams'

// imagine `discoverPaths()` is a function that returns absolute paths
const paths = discoverPaths();
const options = {
  includeSource: true,
  includeGherkinDocument: true,
  includePickles: true,
  relativeTo: process.cwd()
}
const stream = GherkinStreams.fromPaths(paths)

// Pipe the stream to another stream that can read messages.
stream.pipe(...)