formats-pretty-test.js

// https://www.npmjs.com/package/@rdfjs-elements/formats-pretty
import prefixes from '@zazuko/rdf-vocabularies/prefixes'
import { turtle } from '@rdfjs-elements/formats-pretty/serializers'
import rdf from '@rdfjs/data-model'
import { Readable } from 'readable-stream'
import getStream from 'get-stream'

// Example data
const data = [
  rdf.quad(rdf.namedNode('http://ex.org/s1'), rdf.namedNode('http://schema.org/name'), rdf.literal('Alice')),
  rdf.quad(rdf.namedNode('http://ex.org/s1'), rdf.namedNode('http://ex.org/p1'), rdf.namedNode('http://ex.org/o1')),
  rdf.quad(rdf.namedNode('http://ex.org/o1'), rdf.namedNode('http://schema.org/name'), rdf.literal('Bob'))
]

// Setting up the prettifier
const { schema } = prefixes
const prettifier = await turtle({
  prefixes: { schema, ex: 'http://ex.org/' }
})

// Prettify
const stream = await prettifier.import(Readable.from(data))
console.log(await getStream(stream))

// @prefix schema: <http://schema.org/> .
// @prefix ex: <http://ex.org/> .
//
//   ex:s1 schema:name "Alice" ;
//          ex:p1 ex:o1 .
//
//   ex:o1 schema:name "Bob" .