# @underlay/namespaces > URI constants for commonly used Underlay namespaces Latest version **0.3.0** (published 2022-01-24) · MIT license · 0 weekly downloads ## Install ```sh npm install @underlay/namespaces pnpm add @underlay/namespaces yarn add @underlay/namespaces bun add @underlay/namespaces ``` ## Health **Score 30/100 (F)** — status: abandoned. Positive: has types; esm support; no vulnerabilities; high quality score. Warnings: low downloads; pre 1.0. Negative: abandoned; low maintenance score. ## Facts | | | |---|---| | Version | 0.3.0 | | Published | 2022-01-24 | | First published | 2021-01-28 | | Weekly downloads | 0 | | License | MIT | | TypeScript types | bundled | | Module format | ESM + CommonJS | | Dependencies | 0 | | Unpacked size | 14.9 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 0 | | Author | Joel Gustafson | | Maintainers | joelg | ## Links - npm: https://www.npmjs.com/package/@underlay/namespaces - Repository: https://github.com/underlay/namespaces - Homepage: https://github.com/underlay/namespaces#readme - Issues: https://github.com/underlay/namespaces/issues - npm.io page: https://npm.io/package/@underlay/namespaces ## Recent versions - 0.3.0 (latest) — 2022-01-24 - 0.2.0 — 2021-11-01 - 0.1.3 — 2021-09-01 - 0.1.1 — 2021-08-18 - 0.1.0 — 2021-08-18 - 0.0.3 — 2021-03-14 - 0.0.2 — 2021-01-29 - 0.0.1 — 2021-01-28 ## README # namespaces [![standard-readme compliant](https://img.shields.io/badge/readme%20style-standard-brightgreen.svg)](https://github.com/RichardLitt/standard-readme) [![license](https://img.shields.io/github/license/underlay/namespaces)](https://opensource.org/licenses/MIT) [![NPM version](https://img.shields.io/npm/v/@underlay/namespaces)](https://www.npmjs.com/package/@underlay/namespaces) ![TypeScript types](https://img.shields.io/npm/types/@underlay/namespaces) ![lines of code](https://img.shields.io/tokei/lines/github/underlay/namespaces) URI constants for commonly used Underlay namespaces. ## Table of Contents - [Install](#install) - [Usage](#usage) - [API](#api) - [XSD terms](#xsd-terms) - [RDF terms](#rdf-terms) - [Underlay terms](#underlay-terms) - [Contributing](#contributing) - [License](#license) ## Install ``` npm i @underlay/namespaces ``` ## Usage ```typescript import { xsd, rdf, ul } from "@underlay/namespaces" console.log(xsd.integer) // "http://www.w3.org/2001/XMLSchema#integer" console.log(rdf.type) // "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" console.log(ul.class) // "http://underlay.org/ns/class" ``` ## API ### XSD terms The datatypes from the [XML Schema Definition Language](https://www.w3.org/TR/xmlschema11-2/) are exported as a read-only `xsd` object: ```typescript const xsd: { readonly string: "http://www.w3.org/2001/XMLSchema#string" readonly boolean: "http://www.w3.org/2001/XMLSchema#boolean" readonly Decimal: "http://www.w3.org/2001/XMLSchema#decimal" readonly integer: "http://www.w3.org/2001/XMLSchema#integer" readonly double: "http://www.w3.org/2001/XMLSchema#double" readonly float: "http://www.w3.org/2001/XMLSchema#float" readonly date: "http://www.w3.org/2001/XMLSchema#date" readonly time: "http://www.w3.org/2001/XMLSchema#time" readonly dateTime: "http://www.w3.org/2001/XMLSchema#dateTime" readonly dateTimeStamp: "http://www.w3.org/2001/XMLSchema#dateTimeStamp" readonly gYear: "http://www.w3.org/2001/XMLSchema#gYear" readonly gMonth: "http://www.w3.org/2001/XMLSchema#gMonth" readonly gDay: "http://www.w3.org/2001/XMLSchema#gDay" readonly gYearMonth: "http://www.w3.org/2001/XMLSchema#gYearMonth" readonly gMonthDay: "http://www.w3.org/2001/XMLSchema#gMonthDay" readonly duration: "http://www.w3.org/2001/XMLSchema#duration" readonly yearMonthDuration: "http://www.w3.org/2001/XMLSchema#yearMonthDuration" readonly dayTimeDuration: "http://www.w3.org/2001/XMLSchema#dayTimeDuration" readonly byte: "http://www.w3.org/2001/XMLSchema#byte" readonly short: "http://www.w3.org/2001/XMLSchema#short" readonly int: "http://www.w3.org/2001/XMLSchema#int" readonly long: "http://www.w3.org/2001/XMLSchema#long" readonly unsignedByte: "http://www.w3.org/2001/XMLSchema#unsignedByte" readonly unsignedShort: "http://www.w3.org/2001/XMLSchema#unsignedShort" readonly unsignedInt: "http://www.w3.org/2001/XMLSchema#unsignedInt" readonly unsignedLong: "http://www.w3.org/2001/XMLSchema#unsignedLong" readonly positiveInteger: "http://www.w3.org/2001/XMLSchema#positiveInteger" readonly nonNegativeInteger: "http://www.w3.org/2001/XMLSchema#nonNegativeInteger" readonly nonPositiveInteger: "http://www.w3.org/2001/XMLSchema#nonPositiveInteger" readonly hexBinary: "http://www.w3.org/2001/XMLSchema#hexBinary" readonly base64Binary: "http://www.w3.org/2001/XMLSchema#base64Binary" readonly anyURI: "http://www.w3.org/2001/XMLSchema#anyURI" readonly language: "http://www.w3.org/2001/XMLSchema#language" readonly normalizedString: "http://www.w3.org/2001/XMLSchema#normalizedString" readonly token: "http://www.w3.org/2001/XMLSchema#token" readonly NMTOKEN: "http://www.w3.org/2001/XMLSchema#NMTOKEN" readonly Name: "http://www.w3.org/2001/XMLSchema#Name" readonly NCNames: "http://www.w3.org/2001/XMLSchema#NCNames" } ``` ### RDF terms A selection of terms from the RDF Schema vocabulary are exported as a read-only `rdf` object: ```typescript const rdf: { readonly type: "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" readonly first: "http://www.w3.org/1999/02/22-rdf-syntax-ns#first" readonly rest: "http://www.w3.org/1999/02/22-rdf-syntax-ns#rest" readonly langString: "http://www.w3.org/1999/02/22-rdf-syntax-ns#langString" readonly JSON: "http://www.w3.org/1999/02/22-rdf-syntax-ns#JSON" } ``` ### Underlay terms The terms in the Underlay namespace are exported as a read-only `ul` object: ```typescript const ul: { readonly class: "http://underlay.org/ns/class" readonly key: "http://underlay.org/ns/key" readonly value: "http://underlay.org/ns/value" readonly uri: "http://underlay.org/ns/uri" readonly literal: "http://underlay.org/ns/literal" readonly datatype: "http://underlay.org/ns/datatype" readonly product: "http://underlay.org/ns/product" readonly component: "http://underlay.org/ns/component" readonly coproduct: "http://underlay.org/ns/coproduct" readonly option: "http://underlay.org/ns/option" readonly reference: "http://underlay.org/ns/reference" readonly some: "http://underlay.org/ns/some" readonly none: "http://underlay.org/ns/none" readonly source: "http://underlay.org/ns/source" readonly target: "http://underlay.org/ns/target" } ``` ## Contributing This library is not intended to be comprehensive. Open an issue to discuss adding other namespaces. ## License MIT © 2021 underlay --- _Source: https://npm.io/package/@underlay/namespaces · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._