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jsonld

A JSON-LD Processor and API implementation in JavaScript.

  • 0.0.2
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
131K
increased by13.48%
Maintainers
2
Weekly downloads
 
Created

What is jsonld?

The jsonld package is a JavaScript library for working with JSON-LD, a JSON-based format for representing linked data. It provides tools for transforming JSON-LD documents, compacting, expanding, and framing data, and converting between JSON-LD and other RDF serializations.

What are jsonld's main functionalities?

Compacting

Compacting a JSON-LD document means transforming it into a more compact form using a context. This is useful for reducing the size of the data and making it easier to read.

const jsonld = require('jsonld');

const doc = {
  "@context": {
    "name": "http://schema.org/name",
    "homepage": {
      "@id": "http://schema.org/url",
      "@type": "@id"
    }
  },
  "name": "Manu Sporny",
  "homepage": "http://manu.sporny.org/"
};

const context = {
  "name": "http://schema.org/name",
  "url": "http://schema.org/url"
};

jsonld.compact(doc, context).then(compacted => {
  console.log(JSON.stringify(compacted, null, 2));
});

Expanding

Expanding a JSON-LD document means transforming it into a fully expanded form where all terms are expressed in their full IRI form. This is useful for processing data in a more uniform way.

const jsonld = require('jsonld');

const doc = {
  "@context": {
    "name": "http://schema.org/name",
    "homepage": {
      "@id": "http://schema.org/url",
      "@type": "@id"
    }
  },
  "name": "Manu Sporny",
  "homepage": "http://manu.sporny.org/"
};

jsonld.expand(doc).then(expanded => {
  console.log(JSON.stringify(expanded, null, 2));
});

Framing

Framing a JSON-LD document allows you to extract a specific subgraph of the data, organized according to a frame. This is useful for extracting and presenting data in a specific structure.

const jsonld = require('jsonld');

const doc = {
  "@context": {
    "name": "http://schema.org/name",
    "homepage": {
      "@id": "http://schema.org/url",
      "@type": "@id"
    }
  },
  "@graph": [
    {
      "@id": "_:b0",
      "name": "Manu Sporny",
      "homepage": "http://manu.sporny.org/"
    }
  ]
};

const frame = {
  "@context": {
    "name": "http://schema.org/name",
    "homepage": {
      "@id": "http://schema.org/url",
      "@type": "@id"
    }
  },
  "@type": "http://schema.org/Person"
};

jsonld.frame(doc, frame).then(framed => {
  console.log(JSON.stringify(framed, null, 2));
});

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Package last updated on 26 Sep 2012

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