schema-dts

JSON-LD TypeScript types for Schema.org vocabulary.

schema-dts provides TypeScript definitions for Schema.org vocabulary in JSON-LD format. The typings are exposed as complete sets of discriminated type unions, allowing for easy completions and stricter validation.

This repository contains two NPM packages:

• schema-dts-gen Providing a command-line tool to generate TypeScript files based on a specific Schema version and layer.
• schema-dts Pre-packaged TypeScript typings of latest Schema.org schema, without pending and other non-core layers.

Note: This is not an officially supported Google product.

Usage

To use the typings for your project, simply add the schema-dts NPM package to your project:

npm install schema-dts

Then you can use it by importing "schema-dts".

Root context

You will usually want your top-level item to include a @context, like https://schema.org. In order for your object type to accept this property, you can augment it with WithContext, e.g.:

import {Person, WithContext} from 'schema-dts';

const p: WithContext<Person> = {
  '@context': 'https://schema.org',
  '@type': 'Person',
  name: 'Eve',
  affiliation: {
    '@type': 'School',
    name: 'Nice School',
  },
};

Schema Typings Generator

The Schema Typings Generator is available in the schema-dts-gen package.

npm install schema-dts-gen
npx schema-dts-gen --ontology=https://schema.org/version/latest/schemaorg-all-https.nt

Command line usage:

• Specify your ontology

  • Specify --ontology: An HTTPs URL to an .nt NTriple file declaring your ontology.

    Must be compatible with Schema.org, including the Schema.org DataTypes and specifying a top-level Thing type.

• --context: Defaults to https://schema.org, the value or values to be used with the "@context" property.

  Can be either a single URL, or a comma separated list of two or more name:URL pairs.

  The context affects names of string properties in types, as well as the values of an object's "@type".

• --deprecated/--nodeprecated: Whether or not to include deprecated Schema.org types and properties. When included, these types will still be marked with @deprecated JSDOC tags.

• --verbose: Outputs additional logs and debugging notes to stderr.

Developers

Use NPM to install dependencies:

npm install

We have wrappers around tsc and tsc --build to build our generator other .d.ts files.

To generate TypeScript from the latest Schema.org Schema:

npm run build-gen && npm run build-schema

or simply build the schema-dts generator:

npm run build-gen

To contribute changes, see the CONTRIBUTING.md file.