Take a JSON-LD object and cast it into two arrays, one of nodes and one of links, for rendering with a D3 network visualization.

jsonld2nodelinkarrays.js

const fn = (jsonLD, linkType) => {
  let nodes = jsonLD['@graph']
    .filter(n => n)
    .map(n => {
      n.level = 0
      return n
    })

  let connections = subjects["@graph"].map(node => {
    return {
      source: node.uri,
      target: [...arrayify(node[linkType])].map(node => node.uri),
      strength: 1.0
    }
  })
  let links = []
  connections.forEach(concept => {
    concept.target.forEach(target => {
      links.push({
        source: concept.source,
        target: target,
        strength: 1
      })
    })
  })
  // { target: "mammal", source: "dog" , strength: 1.0 },

  return {
    nodes: [
      ...nodes,
    ],
    links: links
  }
}