@stencila/schema/dist/index.mjs

import fs from 'fs';
import path from 'path';

function _extends() {
  _extends = Object.assign || function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };

  return _extends.apply(this, arguments);
}

/* eslint-disable */
// Remove properties from an Object if their value is undefined
const compact = o => Object.entries(o).reduce((compactedO, [k, v]) => v === undefined ? compactedO : _extends({}, compactedO, {
  [k]: v
}), {});
/**
 * Create a `Entity` node
 * @param props Object containing Entity schema properties as key/value pairs
 * @returns {Entity} Entity schema node
 */


const entity = (props = {}) => _extends({}, compact(props), {
  type: 'Entity'
});
/**
 * Create a `Cite` node
 * @param props Object containing Cite schema properties as key/value pairs
 * @returns {Cite} Cite schema node
 */

const cite = props => _extends({}, compact(props), {
  type: 'Cite'
});
/**
 * Create a `CiteGroup` node
 * @param props Object containing CiteGroup schema properties as key/value pairs
 * @returns {CiteGroup} CiteGroup schema node
 */

const citeGroup = props => _extends({}, compact(props), {
  type: 'CiteGroup'
});
/**
 * Create a `Code` node
 * @param props Object containing Code schema properties as key/value pairs
 * @returns {Code} Code schema node
 */

const code = props => _extends({}, compact(props), {
  type: 'Code'
});
/**
 * Create a `CodeBlock` node
 * @param props Object containing CodeBlock schema properties as key/value pairs
 * @returns {CodeBlock} CodeBlock schema node
 */

const codeBlock = props => _extends({}, compact(props), {
  type: 'CodeBlock'
});
/**
 * Create a `CodeExecutable` node
 * @param props Object containing CodeExecutable schema properties as key/value pairs
 * @returns {CodeExecutable} CodeExecutable schema node
 */

const codeExecutable = props => _extends({}, compact(props), {
  type: 'CodeExecutable'
});
/**
 * Create a `CodeChunk` node
 * @param props Object containing CodeChunk schema properties as key/value pairs
 * @returns {CodeChunk} CodeChunk schema node
 */

const codeChunk = props => _extends({}, compact(props), {
  type: 'CodeChunk'
});
/**
 * Create a `CodeExpression` node
 * @param props Object containing CodeExpression schema properties as key/value pairs
 * @returns {CodeExpression} CodeExpression schema node
 */

const codeExpression = props => _extends({}, compact(props), {
  type: 'CodeExpression'
});
/**
 * Create a `CodeFragment` node
 * @param props Object containing CodeFragment schema properties as key/value pairs
 * @returns {CodeFragment} CodeFragment schema node
 */

const codeFragment = props => _extends({}, compact(props), {
  type: 'CodeFragment'
});
/**
 * Create a `CodeError` node
 * @param props Object containing CodeError schema properties as key/value pairs
 * @returns {CodeError} CodeError schema node
 */

const codeError = props => _extends({}, compact(props), {
  type: 'CodeError'
});
/**
 * Create a `Date` node
 * @param props Object containing Date schema properties as key/value pairs
 * @returns {Date} Date schema node
 */

const date = props => _extends({}, compact(props), {
  type: 'Date'
});
/**
 * Create a `Mark` node
 * @param props Object containing Mark schema properties as key/value pairs
 * @returns {Mark} Mark schema node
 */

const mark = props => _extends({}, compact(props), {
  type: 'Mark'
});
/**
 * Create a `Delete` node
 * @param props Object containing Delete schema properties as key/value pairs
 * @returns {Delete} Delete schema node
 */

const del = props => _extends({}, compact(props), {
  type: 'Delete'
});
/**
 * Create a `Emphasis` node
 * @param props Object containing Emphasis schema properties as key/value pairs
 * @returns {Emphasis} Emphasis schema node
 */

const emphasis = props => _extends({}, compact(props), {
  type: 'Emphasis'
});
/**
 * Create a `Thing` node
 * @param props Object containing Thing schema properties as key/value pairs
 * @returns {Thing} Thing schema node
 */

const thing = (props = {}) => _extends({}, compact(props), {
  type: 'Thing'
});
/**
 * Create a `Brand` node
 * @param props Object containing Brand schema properties as key/value pairs
 * @returns {Brand} Brand schema node
 */

const brand = props => _extends({}, compact(props), {
  type: 'Brand'
});
/**
 * Create a `ContactPoint` node
 * @param props Object containing ContactPoint schema properties as key/value pairs
 * @returns {ContactPoint} ContactPoint schema node
 */

const contactPoint = (props = {}) => _extends({}, compact(props), {
  type: 'ContactPoint'
});
/**
 * Create a `CreativeWork` node
 * @param props Object containing CreativeWork schema properties as key/value pairs
 * @returns {CreativeWork} CreativeWork schema node
 */

const creativeWork = (props = {}) => _extends({}, compact(props), {
  type: 'CreativeWork'
});
/**
 * Create a `Article` node
 * @param props Object containing Article schema properties as key/value pairs
 * @returns {Article} Article schema node
 */

const article = (props = {}) => _extends({}, compact(props), {
  type: 'Article'
});
/**
 * Create a `Claim` node
 * @param props Object containing Claim schema properties as key/value pairs
 * @returns {Claim} Claim schema node
 */

const claim = props => _extends({}, compact(props), {
  type: 'Claim'
});
/**
 * Create a `Collection` node
 * @param props Object containing Collection schema properties as key/value pairs
 * @returns {Collection} Collection schema node
 */

const collection = props => _extends({}, compact(props), {
  type: 'Collection'
});
/**
 * Create a `Comment` node
 * @param props Object containing Comment schema properties as key/value pairs
 * @returns {Comment} Comment schema node
 */

const comment = (props = {}) => _extends({}, compact(props), {
  type: 'Comment'
});
/**
 * Create a `Datatable` node
 * @param props Object containing Datatable schema properties as key/value pairs
 * @returns {Datatable} Datatable schema node
 */

const datatable = props => _extends({}, compact(props), {
  type: 'Datatable'
});
/**
 * Create a `MediaObject` node
 * @param props Object containing MediaObject schema properties as key/value pairs
 * @returns {MediaObject} MediaObject schema node
 */

const mediaObject = props => _extends({}, compact(props), {
  type: 'MediaObject'
});
/**
 * Create a `AudioObject` node
 * @param props Object containing AudioObject schema properties as key/value pairs
 * @returns {AudioObject} AudioObject schema node
 */

const audioObject = props => _extends({}, compact(props), {
  type: 'AudioObject'
});
/**
 * Create a `DatatableColumn` node
 * @param props Object containing DatatableColumn schema properties as key/value pairs
 * @returns {DatatableColumn} DatatableColumn schema node
 */

const datatableColumn = props => _extends({}, compact(props), {
  type: 'DatatableColumn'
});
/**
 * Create a `DefinedTerm` node
 * @param props Object containing DefinedTerm schema properties as key/value pairs
 * @returns {DefinedTerm} DefinedTerm schema node
 */

const definedTerm = props => _extends({}, compact(props), {
  type: 'DefinedTerm'
});
/**
 * Create a `Validator` node
 * @param props Object containing Validator schema properties as key/value pairs
 * @returns {Validator} Validator schema node
 */

const validator = (props = {}) => _extends({}, compact(props), {
  type: 'Validator'
});
/**
 * Create a `ArrayValidator` node
 * @param props Object containing ArrayValidator schema properties as key/value pairs
 * @returns {ArrayValidator} ArrayValidator schema node
 */

const arrayValidator = (props = {}) => _extends({}, compact(props), {
  type: 'ArrayValidator'
});
/**
 * Create a `BooleanValidator` node
 * @param props Object containing BooleanValidator schema properties as key/value pairs
 * @returns {BooleanValidator} BooleanValidator schema node
 */

const booleanValidator = (props = {}) => _extends({}, compact(props), {
  type: 'BooleanValidator'
});
/**
 * Create a `ConstantValidator` node
 * @param props Object containing ConstantValidator schema properties as key/value pairs
 * @returns {ConstantValidator} ConstantValidator schema node
 */

const constantValidator = (props = {}) => _extends({}, compact(props), {
  type: 'ConstantValidator'
});
/**
 * Create a `EnumValidator` node
 * @param props Object containing EnumValidator schema properties as key/value pairs
 * @returns {EnumValidator} EnumValidator schema node
 */

const enumValidator = (props = {}) => _extends({}, compact(props), {
  type: 'EnumValidator'
});
/**
 * Create a `Enumeration` node
 * @param props Object containing Enumeration schema properties as key/value pairs
 * @returns {Enumeration} Enumeration schema node
 */

const enumeration = (props = {}) => _extends({}, compact(props), {
  type: 'Enumeration'
});
/**
 * Create a `Figure` node
 * @param props Object containing Figure schema properties as key/value pairs
 * @returns {Figure} Figure schema node
 */

const figure = (props = {}) => _extends({}, compact(props), {
  type: 'Figure'
});
/**
 * Create a `Function` node
 * @param props Object containing Function schema properties as key/value pairs
 * @returns {Function} Function schema node
 */

const function_ = (props = {}) => _extends({}, compact(props), {
  type: 'Function'
});
/**
 * Create a `Grant` node
 * @param props Object containing Grant schema properties as key/value pairs
 * @returns {Grant} Grant schema node
 */

const grant = (props = {}) => _extends({}, compact(props), {
  type: 'Grant'
});
/**
 * Create a `Heading` node
 * @param props Object containing Heading schema properties as key/value pairs
 * @returns {Heading} Heading schema node
 */

const heading = props => _extends({}, compact(props), {
  type: 'Heading'
});
/**
 * Create a `ImageObject` node
 * @param props Object containing ImageObject schema properties as key/value pairs
 * @returns {ImageObject} ImageObject schema node
 */

const imageObject = props => _extends({}, compact(props), {
  type: 'ImageObject'
});
/**
 * Create a `Include` node
 * @param props Object containing Include schema properties as key/value pairs
 * @returns {Include} Include schema node
 */

const include = props => _extends({}, compact(props), {
  type: 'Include'
});
/**
 * Create a `IntegerValidator` node
 * @param props Object containing IntegerValidator schema properties as key/value pairs
 * @returns {IntegerValidator} IntegerValidator schema node
 */

const integerValidator = (props = {}) => _extends({}, compact(props), {
  type: 'IntegerValidator'
});
/**
 * Create a `Link` node
 * @param props Object containing Link schema properties as key/value pairs
 * @returns {Link} Link schema node
 */

const link = props => _extends({}, compact(props), {
  type: 'Link'
});
/**
 * Create a `List` node
 * @param props Object containing List schema properties as key/value pairs
 * @returns {List} List schema node
 */

const list = props => _extends({}, compact(props), {
  type: 'List'
});
/**
 * Create a `ListItem` node
 * @param props Object containing ListItem schema properties as key/value pairs
 * @returns {ListItem} ListItem schema node
 */

const listItem = (props = {}) => _extends({}, compact(props), {
  type: 'ListItem'
});
/**
 * Create a `Math` node
 * @param props Object containing Math schema properties as key/value pairs
 * @returns {Math} Math schema node
 */

const math = props => _extends({}, compact(props), {
  type: 'Math'
});
/**
 * Create a `MathBlock` node
 * @param props Object containing MathBlock schema properties as key/value pairs
 * @returns {MathBlock} MathBlock schema node
 */

const mathBlock = props => _extends({}, compact(props), {
  type: 'MathBlock'
});
/**
 * Create a `MathFragment` node
 * @param props Object containing MathFragment schema properties as key/value pairs
 * @returns {MathFragment} MathFragment schema node
 */

const mathFragment = props => _extends({}, compact(props), {
  type: 'MathFragment'
});
/**
 * Create a `MonetaryGrant` node
 * @param props Object containing MonetaryGrant schema properties as key/value pairs
 * @returns {MonetaryGrant} MonetaryGrant schema node
 */

const monetaryGrant = (props = {}) => _extends({}, compact(props), {
  type: 'MonetaryGrant'
});
/**
 * Create a `NontextualAnnotation` node
 * @param props Object containing NontextualAnnotation schema properties as key/value pairs
 * @returns {NontextualAnnotation} NontextualAnnotation schema node
 */

const nontextualAnnotation = props => _extends({}, compact(props), {
  type: 'NontextualAnnotation'
});
/**
 * Create a `Note` node
 * @param props Object containing Note schema properties as key/value pairs
 * @returns {Note} Note schema node
 */

const note = props => _extends({}, compact(props), {
  type: 'Note'
});
/**
 * Create a `NumberValidator` node
 * @param props Object containing NumberValidator schema properties as key/value pairs
 * @returns {NumberValidator} NumberValidator schema node
 */

const numberValidator = (props = {}) => _extends({}, compact(props), {
  type: 'NumberValidator'
});
/**
 * Create a `Organization` node
 * @param props Object containing Organization schema properties as key/value pairs
 * @returns {Organization} Organization schema node
 */

const organization = (props = {}) => _extends({}, compact(props), {
  type: 'Organization'
});
/**
 * Create a `Paragraph` node
 * @param props Object containing Paragraph schema properties as key/value pairs
 * @returns {Paragraph} Paragraph schema node
 */

const paragraph = props => _extends({}, compact(props), {
  type: 'Paragraph'
});
/**
 * Create a `Parameter` node
 * @param props Object containing Parameter schema properties as key/value pairs
 * @returns {Parameter} Parameter schema node
 */

const parameter = props => _extends({}, compact(props), {
  type: 'Parameter'
});
/**
 * Create a `Periodical` node
 * @param props Object containing Periodical schema properties as key/value pairs
 * @returns {Periodical} Periodical schema node
 */

const periodical = (props = {}) => _extends({}, compact(props), {
  type: 'Periodical'
});
/**
 * Create a `Person` node
 * @param props Object containing Person schema properties as key/value pairs
 * @returns {Person} Person schema node
 */

const person = (props = {}) => _extends({}, compact(props), {
  type: 'Person'
});
/**
 * Create a `PostalAddress` node
 * @param props Object containing PostalAddress schema properties as key/value pairs
 * @returns {PostalAddress} PostalAddress schema node
 */

const postalAddress = (props = {}) => _extends({}, compact(props), {
  type: 'PostalAddress'
});
/**
 * Create a `Product` node
 * @param props Object containing Product schema properties as key/value pairs
 * @returns {Product} Product schema node
 */

const product = (props = {}) => _extends({}, compact(props), {
  type: 'Product'
});
/**
 * Create a `PropertyValue` node
 * @param props Object containing PropertyValue schema properties as key/value pairs
 * @returns {PropertyValue} PropertyValue schema node
 */

const propertyValue = props => _extends({}, compact(props), {
  type: 'PropertyValue'
});
/**
 * Create a `PublicationIssue` node
 * @param props Object containing PublicationIssue schema properties as key/value pairs
 * @returns {PublicationIssue} PublicationIssue schema node
 */

const publicationIssue = (props = {}) => _extends({}, compact(props), {
  type: 'PublicationIssue'
});
/**
 * Create a `PublicationVolume` node
 * @param props Object containing PublicationVolume schema properties as key/value pairs
 * @returns {PublicationVolume} PublicationVolume schema node
 */

const publicationVolume = (props = {}) => _extends({}, compact(props), {
  type: 'PublicationVolume'
});
/**
 * Create a `Quote` node
 * @param props Object containing Quote schema properties as key/value pairs
 * @returns {Quote} Quote schema node
 */

const quote = props => _extends({}, compact(props), {
  type: 'Quote'
});
/**
 * Create a `QuoteBlock` node
 * @param props Object containing QuoteBlock schema properties as key/value pairs
 * @returns {QuoteBlock} QuoteBlock schema node
 */

const quoteBlock = props => _extends({}, compact(props), {
  type: 'QuoteBlock'
});
/**
 * Create a `Review` node
 * @param props Object containing Review schema properties as key/value pairs
 * @returns {Review} Review schema node
 */

const review = (props = {}) => _extends({}, compact(props), {
  type: 'Review'
});
/**
 * Create a `SoftwareApplication` node
 * @param props Object containing SoftwareApplication schema properties as key/value pairs
 * @returns {SoftwareApplication} SoftwareApplication schema node
 */

const softwareApplication = (props = {}) => _extends({}, compact(props), {
  type: 'SoftwareApplication'
});
/**
 * Create a `SoftwareEnvironment` node
 * @param props Object containing SoftwareEnvironment schema properties as key/value pairs
 * @returns {SoftwareEnvironment} SoftwareEnvironment schema node
 */

const softwareEnvironment = props => _extends({}, compact(props), {
  type: 'SoftwareEnvironment'
});
/**
 * Create a `SoftwareSession` node
 * @param props Object containing SoftwareSession schema properties as key/value pairs
 * @returns {SoftwareSession} SoftwareSession schema node
 */

const softwareSession = (props = {}) => _extends({}, compact(props), {
  type: 'SoftwareSession'
});
/**
 * Create a `SoftwareSourceCode` node
 * @param props Object containing SoftwareSourceCode schema properties as key/value pairs
 * @returns {SoftwareSourceCode} SoftwareSourceCode schema node
 */

const softwareSourceCode = (props = {}) => _extends({}, compact(props), {
  type: 'SoftwareSourceCode'
});
/**
 * Create a `StringValidator` node
 * @param props Object containing StringValidator schema properties as key/value pairs
 * @returns {StringValidator} StringValidator schema node
 */

const stringValidator = (props = {}) => _extends({}, compact(props), {
  type: 'StringValidator'
});
/**
 * Create a `Strong` node
 * @param props Object containing Strong schema properties as key/value pairs
 * @returns {Strong} Strong schema node
 */

const strong = props => _extends({}, compact(props), {
  type: 'Strong'
});
/**
 * Create a `Subscript` node
 * @param props Object containing Subscript schema properties as key/value pairs
 * @returns {Subscript} Subscript schema node
 */

const subscript = props => _extends({}, compact(props), {
  type: 'Subscript'
});
/**
 * Create a `Superscript` node
 * @param props Object containing Superscript schema properties as key/value pairs
 * @returns {Superscript} Superscript schema node
 */

const superscript = props => _extends({}, compact(props), {
  type: 'Superscript'
});
/**
 * Create a `Table` node
 * @param props Object containing Table schema properties as key/value pairs
 * @returns {Table} Table schema node
 */

const table = props => _extends({}, compact(props), {
  type: 'Table'
});
/**
 * Create a `TableCell` node
 * @param props Object containing TableCell schema properties as key/value pairs
 * @returns {TableCell} TableCell schema node
 */

const tableCell = (props = {}) => _extends({}, compact(props), {
  type: 'TableCell'
});
/**
 * Create a `TableRow` node
 * @param props Object containing TableRow schema properties as key/value pairs
 * @returns {TableRow} TableRow schema node
 */

const tableRow = props => _extends({}, compact(props), {
  type: 'TableRow'
});
/**
 * Create a `ThematicBreak` node
 * @param props Object containing ThematicBreak schema properties as key/value pairs
 * @returns {ThematicBreak} ThematicBreak schema node
 */

const thematicBreak = (props = {}) => _extends({}, compact(props), {
  type: 'ThematicBreak'
});
/**
 * Create a `TupleValidator` node
 * @param props Object containing TupleValidator schema properties as key/value pairs
 * @returns {TupleValidator} TupleValidator schema node
 */

const tupleValidator = (props = {}) => _extends({}, compact(props), {
  type: 'TupleValidator'
});
/**
 * Create a `Variable` node
 * @param props Object containing Variable schema properties as key/value pairs
 * @returns {Variable} Variable schema node
 */

const variable = props => _extends({}, compact(props), {
  type: 'Variable'
});
/**
 * Create a `VideoObject` node
 * @param props Object containing VideoObject schema properties as key/value pairs
 * @returns {VideoObject} VideoObject schema node
 */

const videoObject = props => _extends({}, compact(props), {
  type: 'VideoObject'
});
/**
 * Create a `VolumeMount` node
 * @param props Object containing VolumeMount schema properties as key/value pairs
 * @returns {VolumeMount} VolumeMount schema node
 */

const volumeMount = props => _extends({}, compact(props), {
  type: 'VolumeMount'
});
/**
 * The type or nature of a citation, both factually and rhetorically.
 */

var CitationIntentEnumeration;

(function (CitationIntentEnumeration) {
  /**
   * The citing entity agrees with statements, ideas or conclusions presented in the cited entity
   */
  CitationIntentEnumeration["AgreesWith"] = "AgreesWith";
  /**
   * The citing entity cites the cited entity as one that provides an authoritative description or definition of the subject under discussion
   */

  CitationIntentEnumeration["CitesAsAuthority"] = "CitesAsAuthority";
  /**
   * The citing entity cites the cited entity as source of data
   */

  CitationIntentEnumeration["CitesAsDataSource"] = "CitesAsDataSource";
  /**
   * The citing entity cites the cited entity as source of factual evidence for statements it contains
   */

  CitationIntentEnumeration["CitesAsEvidence"] = "CitesAsEvidence";
  /**
   * The citing entity cites the cited entity as being the container of metadata describing the citing entity
   */

  CitationIntentEnumeration["CitesAsMetadataDocument"] = "CitesAsMetadataDocument";
  /**
   * The citing entity cites the cited entity as providing or containing a possible solution to the issues being discussed
   */

  CitationIntentEnumeration["CitesAsPotentialSolution"] = "CitesAsPotentialSolution";
  /**
   * The citing entity cites the cited entity as an item of recommended reading
   */

  CitationIntentEnumeration["CitesAsRecommendedReading"] = "CitesAsRecommendedReading";
  /**
   * The citing entity cites the cited entity as one that is related
   */

  CitationIntentEnumeration["CitesAsRelated"] = "CitesAsRelated";
  /**
   * The citing entity cites the cited entity as being the entity from which the citing entity is derived, or about which the citing entity contains metadata
   */

  CitationIntentEnumeration["CitesAsSourceDocument"] = "CitesAsSourceDocument";
  /**
   * The citing entity cites the cited entity as a source of information on the subject under discussion
   */

  CitationIntentEnumeration["CitesForInformation"] = "CitesForInformation";
  /**
   * The citing entity is used to create or compile the cited entity
   */

  CitationIntentEnumeration["Compiles"] = "Compiles";
  /**
   * The citing entity confirms facts, ideas or statements presented in the cited entity
   */

  CitationIntentEnumeration["Confirms"] = "Confirms";
  /**
   * The citing entity contains a statement of fact or a logical assertion (or a collection of such facts and/or assertions) originally present in the cited entity
   */

  CitationIntentEnumeration["ContainsAssertionFrom"] = "ContainsAssertionFrom";
  /**
   * The citing entity corrects statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Corrects"] = "Corrects";
  /**
   * The citing entity acknowledges contributions made by the cited entity
   */

  CitationIntentEnumeration["Credits"] = "Credits";
  /**
   * The citing entity critiques statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Critiques"] = "Critiques";
  /**
   * The citing entity express derision for the cited entity, or for ideas or conclusions contained within it
   */

  CitationIntentEnumeration["Derides"] = "Derides";
  /**
   * The citing entity describes the cited entity
   */

  CitationIntentEnumeration["Describes"] = "Describes";
  /**
   * The citing entity disagrees with statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["DisagreesWith"] = "DisagreesWith";
  /**
   * The citing entity discusses statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Discusses"] = "Discusses";
  /**
   * The citing entity disputes statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Disputes"] = "Disputes";
  /**
   * The citing entity documents information about the cited entity
   */

  CitationIntentEnumeration["Documents"] = "Documents";
  /**
   * The citing entity extends facts, ideas or understandings presented in the cited entity
   */

  CitationIntentEnumeration["Extends"] = "Extends";
  /**
   * The cited entity provides background information for the citing entity
   */

  CitationIntentEnumeration["GivesBackgroundTo"] = "GivesBackgroundTo";
  /**
   * The cited entity provides intellectual or factual support for the citing entity
   */

  CitationIntentEnumeration["GivesSupportTo"] = "GivesSupportTo";
  /**
   * The cited entity evokes a reply from the citing entity
   */

  CitationIntentEnumeration["HasReplyFrom"] = "HasReplyFrom";
  /**
   * The citing entity includes one or more excerpts from the cited entity
   */

  CitationIntentEnumeration["IncludesExcerptFrom"] = "IncludesExcerptFrom";
  /**
   * The citing entity includes one or more quotations from the cited entity
   */

  CitationIntentEnumeration["IncludesQuotationFrom"] = "IncludesQuotationFrom";
  /**
   * The cited entity contains statements, ideas or conclusions with which the citing entity agrees
   */

  CitationIntentEnumeration["IsAgreedWithBy"] = "IsAgreedWithBy";
  /**
   * The cited entity is cited as providing an authoritative description or definition of the subject under discussion in the citing entity
   */

  CitationIntentEnumeration["IsCitedAsAuthorityBy"] = "IsCitedAsAuthorityBy";
  /**
   * The cited entity is cited as a data source by the citing entity
   */

  CitationIntentEnumeration["IsCitedAsDataSourceBy"] = "IsCitedAsDataSourceBy";
  /**
   * The cited entity is cited for providing factual evidence to the citing entity
   */

  CitationIntentEnumeration["IsCitedAsEvidenceBy"] = "IsCitedAsEvidenceBy";
  /**
   * The cited entity is cited as being the container of metadata relating to the citing entity
   */

  CitationIntentEnumeration["IsCitedAsMetadataDocumentBy"] = "IsCitedAsMetadataDocumentBy";
  /**
   * The cited entity is cited as providing or containing a possible solution to the issues being discussed in the citing entity
   */

  CitationIntentEnumeration["IsCitedAsPontentialSolutionBy"] = "IsCitedAsPontentialSolutionBy";
  /**
   * The cited entity is cited by the citing entity as an item of recommended reading
   */

  CitationIntentEnumeration["IsCitedAsRecommendedReadingBy"] = "IsCitedAsRecommendedReadingBy";
  /**
   * The cited entity is cited as being related to the citing entity
   */

  CitationIntentEnumeration["IsCitedAsRelatedBy"] = "IsCitedAsRelatedBy";
  /**
   * The cited entity is cited as being the entity from which the citing entity is derived, or about which the citing entity contains metadata
   */

  CitationIntentEnumeration["IsCitedAsSourceDocumentBy"] = "IsCitedAsSourceDocumentBy";
  /**
   * The cited entity (the subject of the RDF triple) is cited by the citing entity (the object of the triple)
   */

  CitationIntentEnumeration["IsCitedBy"] = "IsCitedBy";
  /**
   * The cited entity is cited as a source of information on the subject under discussion in the citing entity
   */

  CitationIntentEnumeration["IsCitedForInformationBy"] = "IsCitedForInformationBy";
  /**
   * The cited entity is the result of a compile or creation event using the citing entity
   */

  CitationIntentEnumeration["IsCompiledBy"] = "IsCompiledBy";
  /**
   * The cited entity presents facts, ideas or statements that are confirmed by the citing entity
   */

  CitationIntentEnumeration["IsConfirmedBy"] = "IsConfirmedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are corrected by the citing entity
   */

  CitationIntentEnumeration["IsCorrectedBy"] = "IsCorrectedBy";
  /**
   * The cited entity makes contributions that are acknowledged by the citing entity
   */

  CitationIntentEnumeration["IsCreditedBy"] = "IsCreditedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are critiqued by the citing entity
   */

  CitationIntentEnumeration["IsCritiquedBy"] = "IsCritiquedBy";
  /**
   * The cited entity contains ideas or conclusions for which the citing entity express derision
   */

  CitationIntentEnumeration["IsDeridedBy"] = "IsDeridedBy";
  /**
   * The cited entity is described by the citing entity
   */

  CitationIntentEnumeration["IsDescribedBy"] = "IsDescribedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are disagreed with by the citing entity
   */

  CitationIntentEnumeration["IsDisagreedWithBy"] = "IsDisagreedWithBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are discussed by the citing entity
   */

  CitationIntentEnumeration["IsDiscussedBy"] = "IsDiscussedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are disputed by the citing entity
   */

  CitationIntentEnumeration["IsDisputedBy"] = "IsDisputedBy";
  /**
   * Information about the cited entity is documented by the citing entity
   */

  CitationIntentEnumeration["IsDocumentedBy"] = "IsDocumentedBy";
  /**
   * The cited entity presents facts, ideas or understandings that are extended by the citing entity
   */

  CitationIntentEnumeration["IsExtendedBy"] = "IsExtendedBy";
  /**
   * The cited entity is the target for an HTTP Uniform Resource Locator (URL) link within the citing entity
   */

  CitationIntentEnumeration["IsLinkedToBy"] = "IsLinkedToBy";
  /**
   * The characteristic style or content of the cited entity is imitated by the citing entity for comic effect, usually without explicit citation
   */

  CitationIntentEnumeration["IsParodiedBy"] = "IsParodiedBy";
  /**
   * The cited entity is plagiarized by the author of the citing entity, who includes within the citing entity textual or other elements from the cited entity without formal acknowledgement of their source
   */

  CitationIntentEnumeration["IsPlagiarizedBy"] = "IsPlagiarizedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are qualified or have conditions placed upon them by the citing entity
   */

  CitationIntentEnumeration["IsQualifiedBy"] = "IsQualifiedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are refuted by the citing entity
   */

  CitationIntentEnumeration["IsRefutedBy"] = "IsRefutedBy";
  /**
   * The cited entity is formally retracted by the citing entity
   */

  CitationIntentEnumeration["IsRetractedBy"] = "IsRetractedBy";
  /**
   * The cited entity presents statements, ideas or conclusions that are reviewed by the citing entity
   */

  CitationIntentEnumeration["IsReviewedBy"] = "IsReviewedBy";
  /**
   * The cited entity or aspects of its contents are ridiculed by the citing entity
   */

  CitationIntentEnumeration["IsRidiculedBy"] = "IsRidiculedBy";
  /**
   * The cited entity is cited because the citing article contains speculations on its content or ideas
   */

  CitationIntentEnumeration["IsSpeculatedOnBy"] = "IsSpeculatedOnBy";
  /**
   * The cited entity receives intellectual or factual support from the citing entity
   */

  CitationIntentEnumeration["IsSupportedBy"] = "IsSupportedBy";
  /**
   * The cited entity presents statements, ideas, hypotheses or understanding that are updated by the cited entity
   */

  CitationIntentEnumeration["IsUpdatedBy"] = "IsUpdatedBy";
  /**
   * A property that permits you to express appreciation of or interest in something that is the object of the RDF triple, or to express that it is worth thinking about even if you do not agree with its content, enabling social media 'likes' statements to be encoded in RDF
   */

  CitationIntentEnumeration["Likes"] = "Likes";
  /**
   * The citing entity provides a link, in the form of an HTTP Uniform Resource Locator (URL), to the cited entity
   */

  CitationIntentEnumeration["LinksTo"] = "LinksTo";
  /**
   * The citing entity obtains background information from the cited entity
   */

  CitationIntentEnumeration["ObtainsBackgroundFrom"] = "ObtainsBackgroundFrom";
  /**
   * The citing entity obtains intellectual or factual support from the cited entity
   */

  CitationIntentEnumeration["ObtainsSupportFrom"] = "ObtainsSupportFrom";
  /**
   * The citing entity imitates the characteristic style or content of the cited entity for comic effect, usually without explicit citation
   */

  CitationIntentEnumeration["Parodies"] = "Parodies";
  /**
   * A property indicating that the author of the citing entity plagiarizes the cited entity, by including textual or other elements from the cited entity without formal acknowledgement of their source
   */

  CitationIntentEnumeration["Plagiarizes"] = "Plagiarizes";
  /**
   * The cited entity contains and is the original source of a statement of fact or a logical assertion (or a collection of such facts and/or assertions) that is to be found in the citing entity
   */

  CitationIntentEnumeration["ProvidesAssertionFor"] = "ProvidesAssertionFor";
  /**
   * The cited entity presents conclusions that are used in work described in the citing entity
   */

  CitationIntentEnumeration["ProvidesConclusionsFor"] = "ProvidesConclusionsFor";
  /**
   * The cited entity presents data that are used in work described in the citing entity
   */

  CitationIntentEnumeration["ProvidesDataFor"] = "ProvidesDataFor";
  /**
   * The cited entity contains information, usually of a textual nature, that is excerpted by (used as an excerpt within) the citing entity
   */

  CitationIntentEnumeration["ProvidesExcerptFor"] = "ProvidesExcerptFor";
  /**
   * The cited entity details a method that is used in work described by the citing entity
   */

  CitationIntentEnumeration["ProvidesMethodFor"] = "ProvidesMethodFor";
  /**
   * The cited entity contains information, usually of a textual nature, that is quoted by (used as a quotation within) the citing entity
   */

  CitationIntentEnumeration["ProvidesQuotationFor"] = "ProvidesQuotationFor";
  /**
   * The citing entity qualifies or places conditions or restrictions upon statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Qualifies"] = "Qualifies";
  /**
   * The citing entity refutes statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Refutes"] = "Refutes";
  /**
   * The citing entity replies to statements, ideas or criticisms presented in the cited entity
   */

  CitationIntentEnumeration["RepliesTo"] = "RepliesTo";
  /**
   * The citing entity constitutes a formal retraction of the cited entity
   */

  CitationIntentEnumeration["Retracts"] = "Retracts";
  /**
   * The citing entity reviews statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Reviews"] = "Reviews";
  /**
   * The citing entity ridicules the cited entity or aspects of its contents
   */

  CitationIntentEnumeration["Ridicules"] = "Ridicules";
  /**
   * Each entity has at least one author that shares a common institutional affiliation with an author of the other entity
   */

  CitationIntentEnumeration["SharesAuthorInstitutionWith"] = "SharesAuthorInstitutionWith";
  /**
   * Each entity has at least one author in common with the other entity
   */

  CitationIntentEnumeration["SharesAuthorWith"] = "SharesAuthorWith";
  /**
   * The two entities result from activities that have been funded by the same funding agency
   */

  CitationIntentEnumeration["SharesFundingAgencyWith"] = "SharesFundingAgencyWith";
  /**
   * The citing and cited bibliographic resources are published in the same journal
   */

  CitationIntentEnumeration["SharesJournalWith"] = "SharesJournalWith";
  /**
   * The citing and cited bibliographic resources are published in same publication venue
   */

  CitationIntentEnumeration["SharesPublicationVenueWith"] = "SharesPublicationVenueWith";
  /**
   * The citing entity speculates on something within or related to the cited entity, without firm evidence
   */

  CitationIntentEnumeration["SpeculatesOn"] = "SpeculatesOn";
  /**
   * The citing entity provides intellectual or factual support for statements, ideas or conclusions presented in the cited entity
   */

  CitationIntentEnumeration["Supports"] = "Supports";
  /**
   * The citing entity updates statements, ideas, hypotheses or understanding presented in the cited entity
   */

  CitationIntentEnumeration["Updates"] = "Updates";
  /**
   * The citing entity describes work that uses conclusions presented in the cited entity
   */

  CitationIntentEnumeration["UsesConclusionsFrom"] = "UsesConclusionsFrom";
  /**
   * The citing entity describes work that uses data presented in the cited entity
   */

  CitationIntentEnumeration["UsesDataFrom"] = "UsesDataFrom";
  /**
   * The citing entity describes work that uses a method detailed in the cited entity
   */

  CitationIntentEnumeration["UsesMethodIn"] = "UsesMethodIn";
})(CitationIntentEnumeration || (CitationIntentEnumeration = {}));

const codeExecutableTypes = {
  CodeExecutable: 'CodeExecutable',
  CodeChunk: 'CodeChunk',
  CodeExpression: 'CodeExpression'
};
const codeTypes = {
  Code: 'Code',
  CodeBlock: 'CodeBlock',
  CodeChunk: 'CodeChunk',
  CodeExecutable: 'CodeExecutable',
  CodeExpression: 'CodeExpression',
  CodeFragment: 'CodeFragment'
};
const contactPointTypes = {
  ContactPoint: 'ContactPoint',
  PostalAddress: 'PostalAddress'
};
const creativeWorkTypes = {
  CreativeWork: 'CreativeWork',
  Article: 'Article',
  AudioObject: 'AudioObject',
  Claim: 'Claim',
  Collection: 'Collection',
  Comment: 'Comment',
  Datatable: 'Datatable',
  Figure: 'Figure',
  ImageObject: 'ImageObject',
  MediaObject: 'MediaObject',
  Periodical: 'Periodical',
  PublicationIssue: 'PublicationIssue',
  PublicationVolume: 'PublicationVolume',
  Review: 'Review',
  SoftwareApplication: 'SoftwareApplication',
  SoftwareSourceCode: 'SoftwareSourceCode',
  Table: 'Table',
  VideoObject: 'VideoObject'
};
const entityTypes = {
  Entity: 'Entity',
  ArrayValidator: 'ArrayValidator',
  Article: 'Article',
  AudioObject: 'AudioObject',
  BooleanValidator: 'BooleanValidator',
  Brand: 'Brand',
  CitationIntentEnumeration: 'CitationIntentEnumeration',
  Cite: 'Cite',
  CiteGroup: 'CiteGroup',
  Claim: 'Claim',
  Code: 'Code',
  CodeBlock: 'CodeBlock',
  CodeChunk: 'CodeChunk',
  CodeError: 'CodeError',
  CodeExecutable: 'CodeExecutable',
  CodeExpression: 'CodeExpression',
  CodeFragment: 'CodeFragment',
  Collection: 'Collection',
  Comment: 'Comment',
  ConstantValidator: 'ConstantValidator',
  ContactPoint: 'ContactPoint',
  CreativeWork: 'CreativeWork',
  Datatable: 'Datatable',
  DatatableColumn: 'DatatableColumn',
  Date: 'Date',
  DefinedTerm: 'DefinedTerm',
  Delete: 'Delete',
  Emphasis: 'Emphasis',
  EnumValidator: 'EnumValidator',
  Enumeration: 'Enumeration',
  Figure: 'Figure',
  Function: 'Function',
  Grant: 'Grant',
  Heading: 'Heading',
  ImageObject: 'ImageObject',
  Include: 'Include',
  IntegerValidator: 'IntegerValidator',
  Link: 'Link',
  List: 'List',
  ListItem: 'ListItem',
  Mark: 'Mark',
  Math: 'Math',
  MathBlock: 'MathBlock',
  MathFragment: 'MathFragment',
  MediaObject: 'MediaObject',
  MonetaryGrant: 'MonetaryGrant',
  NontextualAnnotation: 'NontextualAnnotation',
  Note: 'Note',
  NumberValidator: 'NumberValidator',
  Organization: 'Organization',
  Paragraph: 'Paragraph',
  Parameter: 'Parameter',
  Periodical: 'Periodical',
  Person: 'Person',
  PostalAddress: 'PostalAddress',
  Product: 'Product',
  PropertyValue: 'PropertyValue',
  PublicationIssue: 'PublicationIssue',
  PublicationVolume: 'PublicationVolume',
  Quote: 'Quote',
  QuoteBlock: 'QuoteBlock',
  Review: 'Review',
  SoftwareApplication: 'SoftwareApplication',
  SoftwareEnvironment: 'SoftwareEnvironment',
  SoftwareSession: 'SoftwareSession',
  SoftwareSourceCode: 'SoftwareSourceCode',
  StringValidator: 'StringValidator',
  Strong: 'Strong',
  Subscript: 'Subscript',
  Superscript: 'Superscript',
  Table: 'Table',
  TableCell: 'TableCell',
  TableRow: 'TableRow',
  ThematicBreak: 'ThematicBreak',
  Thing: 'Thing',
  TupleValidator: 'TupleValidator',
  Validator: 'Validator',
  Variable: 'Variable',
  VideoObject: 'VideoObject',
  VolumeMount: 'VolumeMount'
};
const enumerationTypes = {
  Enumeration: 'Enumeration',
  CitationIntentEnumeration: 'CitationIntentEnumeration'
};
const grantTypes = {
  Grant: 'Grant',
  MonetaryGrant: 'MonetaryGrant'
};
const markTypes = {
  Mark: 'Mark',
  Delete: 'Delete',
  Emphasis: 'Emphasis',
  NontextualAnnotation: 'NontextualAnnotation',
  Quote: 'Quote',
  Strong: 'Strong',
  Subscript: 'Subscript',
  Superscript: 'Superscript'
};
const mathTypes = {
  Math: 'Math',
  MathBlock: 'MathBlock',
  MathFragment: 'MathFragment'
};
const mediaObjectTypes = {
  MediaObject: 'MediaObject',
  AudioObject: 'AudioObject',
  ImageObject: 'ImageObject',
  VideoObject: 'VideoObject'
};
const thingTypes = {
  Thing: 'Thing',
  Article: 'Article',
  AudioObject: 'AudioObject',
  Brand: 'Brand',
  CitationIntentEnumeration: 'CitationIntentEnumeration',
  Claim: 'Claim',
  Collection: 'Collection',
  Comment: 'Comment',
  ContactPoint: 'ContactPoint',
  CreativeWork: 'CreativeWork',
  Datatable: 'Datatable',
  DatatableColumn: 'DatatableColumn',
  DefinedTerm: 'DefinedTerm',
  Enumeration: 'Enumeration',
  Figure: 'Figure',
  Grant: 'Grant',
  ImageObject: 'ImageObject',
  ListItem: 'ListItem',
  MediaObject: 'MediaObject',
  MonetaryGrant: 'MonetaryGrant',
  Organization: 'Organization',
  Periodical: 'Periodical',
  Person: 'Person',
  PostalAddress: 'PostalAddress',
  Product: 'Product',
  PropertyValue: 'PropertyValue',
  PublicationIssue: 'PublicationIssue',
  PublicationVolume: 'PublicationVolume',
  Review: 'Review',
  SoftwareApplication: 'SoftwareApplication',
  SoftwareEnvironment: 'SoftwareEnvironment',
  SoftwareSession: 'SoftwareSession',
  SoftwareSourceCode: 'SoftwareSourceCode',
  Table: 'Table',
  VideoObject: 'VideoObject',
  VolumeMount: 'VolumeMount'
};
const validatorTypes = {
  Validator: 'Validator',
  ArrayValidator: 'ArrayValidator',
  BooleanValidator: 'BooleanValidator',
  ConstantValidator: 'ConstantValidator',
  EnumValidator: 'EnumValidator',
  IntegerValidator: 'IntegerValidator',
  NumberValidator: 'NumberValidator',
  StringValidator: 'StringValidator',
  TupleValidator: 'TupleValidator'
};
const blockContentTypes = {
  Claim: 'Claim',
  CodeBlock: 'CodeBlock',
  CodeChunk: 'CodeChunk',
  Collection: 'Collection',
  Figure: 'Figure',
  Heading: 'Heading',
  Include: 'Include',
  List: 'List',
  MathBlock: 'MathBlock',
  Paragraph: 'Paragraph',
  QuoteBlock: 'QuoteBlock',
  Table: 'Table',
  ThematicBreak: 'ThematicBreak'
};
const inlineContentTypes = {
  AudioObject: 'AudioObject',
  Cite: 'Cite',
  CiteGroup: 'CiteGroup',
  CodeExpression: 'CodeExpression',
  CodeFragment: 'CodeFragment',
  Delete: 'Delete',
  Emphasis: 'Emphasis',
  ImageObject: 'ImageObject',
  Link: 'Link',
  MathFragment: 'MathFragment',
  NontextualAnnotation: 'NontextualAnnotation',
  Note: 'Note',
  Parameter: 'Parameter',
  Quote: 'Quote',
  Strong: 'Strong',
  Subscript: 'Subscript',
  Superscript: 'Superscript',
  VideoObject: 'VideoObject'
};
const unions = {
  CodeExecutableTypes: codeExecutableTypes,
  CodeTypes: codeTypes,
  ContactPointTypes: contactPointTypes,
  CreativeWorkTypes: creativeWorkTypes,
  EntityTypes: entityTypes,
  EnumerationTypes: enumerationTypes,
  GrantTypes: grantTypes,
  MarkTypes: markTypes,
  MathTypes: mathTypes,
  MediaObjectTypes: mediaObjectTypes,
  ThingTypes: thingTypes,
  ValidatorTypes: validatorTypes,
  BlockContent: blockContentTypes,
  InlineContent: inlineContentTypes
};

/**
 * Type guard to determine whether a node belongs to a type map
 *
 * @template {TypeMap} T
 * @param {T} typeMap
 * @param {Node} node A Stencila schema node object
 */

const isInTypeMap = typeMap => node => isEntity(node) ? Object.keys(typeMap).includes(node.type) : false;
/**
 * Type guard to determine whether a node is a primitive type
 * (i.e. not an `Entity`).
 */

const isPrimitive = node => {
  const type = typeof node;
  if (node === null) return true;
  if (type === 'boolean') return true;
  if (type === 'number') return true;
  if (type === 'string') return true;
  if (Array.isArray(node)) return true;
  if (type === 'object' && !Object.prototype.hasOwnProperty.call(node, 'type')) return true;
  return false;
};
/**
 * Type guard to determine whether a node is an `Entity`
 */

const isEntity = node => {
  if (node === null || node === undefined) return false;
  return Object.prototype.hasOwnProperty.call(node, 'type');
};
/**
 * A type guard to determine whether a node is of a specific type.
 *
 * e.g. `isA('Paragraph', node)`
 */

const isA = (type, node) => isEntity(node) && node.type === type;
/**
 * Returns a type guard to determine whether a node is of a specific type.
 *
 * e.g. `isType('Article')(node)`
 * e.g. `article.content.filter(isType('Paragraph'))`
 */

const isType = type => node => isA(type, node);
/**
 * A type guard to determine whether a node is a member of a union type.
 *
 * e.g. `isIn('MediaObjectTypes', node)`
 */

const isIn = (union, node) => isEntity(node) && node.type in unions[union];
/**
 * Returns a type guard to determine whether a node is a member of a union type.
 *
 * e.g. `isMember('CreativeWorkTypes')(node)`
 */

const isMember = type => node => isIn(type, node);
/**
 * Type guard to determine whether a node is `InlineContent`.
 *
 * e.g. `nodes.filter(isInlineContent)`
 */

const isInlineContent = node => isPrimitive(node) || isIn('InlineContent', node);
/**
 * Type guard to determine whether a node is `BlockContent`.
 *
 * e.g. `nodes.filter(isBlockContent)`
 */

const isBlockContent = node => isIn('BlockContent', node);

var version$1 = "1.17.0";

/**
 * Get the version string (e.g "1.2.3") for this package
 */

const version = version$1;
/**
 * Get the major version string (e.g "1") for this package
 */

const versionMajor = version.split('.')[0];
/**
 * Get the minor version string (e.g "1.2") for this package
 */

const versionMinor = version.split('.').slice(0, 2).join('.');

// between Stencila Schema type and property names
// and URLs

let CONTEXT; // Maps between vocabulary terms (Stencila Schema types and
// property names) and their compact IRIs ('@id's) and vice-versa.

const termToId = {};
const idToTerm = {}; // Initialize maps. Called once, lazily.

function initMaps() {
  const context = jsonLdContext();

  for (const [term, value] of Object.entries(context)) {
    if (typeof value === 'string' && !term.startsWith('@')) {
      termToId[term] = value;
      idToTerm[value] = term;
    } else if (typeof value === 'object') {
      const id = value['@id'];
      termToId[term] = id;
      idToTerm[id] = term;
    }
  }
}
/**
 * Get the URL of Stencila Schema's JSON-LD `@context` or
 * for a specific `stencila:` term e.g. `CodeChunk`, `outputs`.
 *
 * The `@context`'s URL needs to have a trailing slash because
 * it gets prefixed to all keys during JSON-LD expansion.
 * e.g. the term `CodeChunk` gets expanded to `https://schema.stenci.la/v0/jsonld/CodeChunk`
 * (which in gets redirected to `https://unpkg.com/@stencila/schema@0.32.1/dist/CodeChunk.jsonld`)
 *
 * @param term The Stencila term (type or property) to generate the
 *             URL for. Defaults to empty string i.e. the context.
 */


function jsonLdUrl(term = '') {
  return `https://schema.stenci.la/v${versionMajor}/jsonld/${term}`;
}
/**
 * Get Stencila Schema's JSON-LD `@context` as an object.
 */

function jsonLdContext() {
  if (CONTEXT === undefined) {
    const json = fs.readFileSync(path.join(__dirname, ...(__filename.endsWith('.ts') ? ['..', '..', 'public'] : []), 'stencila.jsonld'), 'utf8'); // eslint-disable-next-line

    CONTEXT = JSON.parse(json)['@context'];
  }

  return CONTEXT;
}
/**
 * Get the URL for a term in the Stencila Schema's JSON-LD `@context`
 * from it's name.
 *
 * This uses the JSON-LD `@context` in `stencila.jsonld` (which
 * provides a mapping between vocabularies) to translate
 * type names used in the Stencila Schema
 * to those used in other schemas (e.g. Schema.org, Bioschemas).
 * The [compact IRIs](https://www.w3.org/TR/json-ld11/#compact-iris)
 * in the `@context` e.g. `schema:Person` are expanded to a URL
 * e.g. `https://schema.org/Person` suitable for the `itemtype` attribute.
 *
 * @param term A term in the JSON-LD `@context`. May, or may not be in
 *             the `stencila` namespace
 */

function jsonLdTermUrl(term) {
  if (Object.keys(termToId).length === 0) initMaps();
  const id = termToId[term];
  if (id === undefined) return undefined;
  const [prefix, name] = id.split(':');
  const context = jsonLdContext();
  const base = context[prefix];
  if (base === undefined) return undefined;
  return `${base.toString()}${name}`;
}
/**
 * Get the name of a term in the Stencila Schema's JSON-LD `@context`
 * from a URL.
 *
 * This is the inverse of `jsonLdTermUrl`.
 *
 * @param url A url to resolve into a term
 */

function jsonLdTermName(url) {
  if (Object.keys(idToTerm).length === 0) initMaps(); // Parse the url into a base URL / term pair

  const {
    hash,
    pathname
  } = new URL(url);
  const term = hash !== '' ? hash.slice(1) : pathname.split('/').pop();
  const baseUrl = url.replace(new RegExp(`${term != null ? term : ''}$`), ''); // Resolve the URL into a prefix

  const prefix = idToTerm[baseUrl];
  if (prefix === undefined) return undefined; // Resolve the `@id` to the term name

  return idToTerm[`${prefix}:${term != null ? term : 'undefined'}`];
}

let SCHEMAS = {}; // Lazily populated set properties across all schemas

let PROPERTIES = {};
/**
 * Get all Stencila Schema's JSON Schemas.
 */

async function jsonSchemas() {
  if (Object.keys(SCHEMAS).length === 0) {
    const dir = path.join(__dirname, ...(__filename.endsWith('.ts') ? ['..', '..', 'public'] : []));
    const files = await new Promise((resolve, reject) => fs.readdir(dir, 'utf8', (error, files) => error !== null ? reject(error) : resolve(files)));
    const schemaFiles = files.filter(filename => filename.endsWith('.schema.json'));
    const promises = schemaFiles.map(async file => {
      const json = await new Promise((resolve, reject) => fs.readFile(path.join(dir, file), 'utf8', (error, content) => error !== null ? reject(error) : resolve(content)));
      return JSON.parse(json);
    });
    const schemas = await Promise.all(promises);
    SCHEMAS = schemas.reduce((prev, schema) => {
      const {
        title
      } = schema;
      return title === undefined ? prev : _extends({}, prev, {
        [title]: schema
      });
    }, {});
  }

  return SCHEMAS;
}
/**
 * Get all the names of all types in the Stencila Schema.
 */

async function jsonSchemaTypes() {
  const schemas = await jsonSchemas();
  return Object.keys(schemas);
}
/**
 * Get all the properties in all types in the Stencila Schema.
 *
 * Returns a alphabetically sorted `Record` with information on
 * each property, including the types that it occurs on,
 * and whether or not it is an array property.
 */

async function jsonSchemaProperties() {
  if (Object.keys(PROPERTIES).length === 0) {
    const schemas = await jsonSchemas(); // Accumulate properties across types

    const props = Object.values(schemas).reduce((prev, type) => {
      const {
        title = '',
        properties = {}
      } = type;
      Object.entries(properties).forEach(([name, prop]) => {
        const {
          '@id': id = '',
          isArray = false,
          isPlural = false
        } = prop;
        const existing = prev[name];

        if (existing === undefined) {
          prev[name] = {
            name,
            id,
            domainIncludes: [title],
            isArray,
            isPlural
          };
        } else {
          // Check that there is consistency in the property
          // Most of these checks are done in `../schema.ts` when the
          // JSON Schema files are generated. These checks may be moved
          // to elsewhere.
          const message = `${title}.${name} differs to that on ${existing.domainIncludes.join(', ')}`;
          if (id !== existing.id) throw new Error(`${message}: @id ${id}`);
          if (isPlural !== existing.isPlural) throw new Error(`${message}: isPlural ${isPlural.toString()}`); // Add the type...

          existing.domainIncludes.push(title);
        }
      });
      return prev;
    }, {}); // Sort by key

    PROPERTIES = Object.keys(props).sort().reduce((prev, key) => _extends({}, prev, {
      [key]: props[key]
    }), {});
  }

  return PROPERTIES;
}

/**
 * Get the type of a node
 *
 * @param {Node} node The schema node to get the type for
 */

const nodeType = node => {
  if (node === null) return 'Null';
  if (typeof node === 'boolean') return 'Boolean';
  if (typeof node === 'number') return 'Number';
  if (typeof node === 'string') return 'String';
  if (Array.isArray(node)) return 'Array';
  if (isEntity(node)) return node.type;
  return 'Object';
};

/**
 * Get the URL used in Microdata attributes.
 *
 * This is used to normalize the versioned URL from the
 * JSON-LD context.
 */

function microdataUrl(type = '') {
  return `https://schema.stenci.la/${type}`;
}
/**
 * Create `MicrodataItem` attributes for a node.
 *
 * Does not create the `itemscope` and `itemtype` attributes for nodes that
 * are primitive (and therefore which do not represent a "scope" having
 * `itemprop`s nested within it). Instead, for primitive nodes, other than `Text`
 * add the `itemtype` attribute, do they can be styled if so desired.
 *
 * @param node The node to create Microdata attributes for
 * @param id Id of the Microdata item. Used to link to this node using the `itemref` property.
 */

function microdataItem(node, id) {
  const itemtype = microdataItemtype(nodeType(node));
  const itemidAttr = id !== undefined ? {
    itemid: `#${id}`
  } : {};
  if (itemtype !== undefined && !isPrimitive(node)) return _extends({
    itemscope: '',
    itemtype
  }, itemidAttr);else if (typeof node !== 'string') return _extends({
    'itemtype': itemtype
  }, itemidAttr);else return itemidAttr;
}
/**
 * Get the HTML Microdata `itemtype` for a Stencila Schema type
 *
 * @see {@link https://www.w3.org/TR/microdata/#dfn-itemtype}
 */

function microdataItemtype(type) {
  var _jsonLdTermUrl;

  return (_jsonLdTermUrl = jsonLdTermUrl(type)) == null ? void 0 : _jsonLdTermUrl.replace(jsonLdUrl(), microdataUrl());
}
/**
 * Get the Stencila Schema type from a HTML Microdata `itemtype`.
 *
 * This is the inverse of `microdataItemtype`.
 */

function microdataType(itemtype) {
  return jsonLdTermName(itemtype.replace(microdataUrl(), jsonLdUrl()));
}
/**
 * Create `MicrodataProperty` attributes for a node property.
 *
 * @param property The name of the property
 * @param isItem Is the node for which attributes are being generated
 *                    an item within an array property? e.g. a `Person` in `authors`.
 * @param id Id of another Microdata item to link to using the `itemref` property.
 */

function microdataProperty(property, role, id) {
  const [prefix, name = ''] = microdataItemprop(property, role);
  const key = prefix === 'schema' ? 'itemprop' : 'data-prop';
  const itemrefAttr = id !== undefined ? {
    itemref: id
  } : {};
  return _extends({
    [key]: name
  }, itemrefAttr);
}
/**
 * Get the HTML Microdata `itemprop` for a Stencila Schema property.
 *
 * The `itemprop` attribute is normally just the name of the property
 * i.e. it is not prefixed by a base URL. This function returns the
 * `[prefix, name]` pair e.g. `["schema", "author"]`,
 * `["codemeta", "maintainer"]` because you may only want to encode
 * `itemprop`s for well known schemas e.g. schema.org
 *
 * @see {@link https://www.w3.org/TR/microdata/#dfn-attr-itemprop}
 *
 * @param property The name of the property
 * @param role Is the node for which attributes are being generated
 *               an item within an array property? e.g. a `Person` in `authors`.
 */

function microdataItemprop(property, role) {
  if (role === 'array') return ['stencila', property];
  const context = jsonLdContext();
  const mapping = context[property];
  if (mapping === undefined) return [undefined, undefined];
  if (typeof mapping === 'string') return [undefined, mapping];
  const id = mapping['@id'];
  let [prefix, name] = id.split(':'); // If this is an item in an array property and the
  // name is a plural, then return a singular name.
  // For external vocabs the `@id` is usually a singular already e.g.
  //   schema:author
  //   codemeta:maintainer

  if (role === 'item' && prefix === 'stencila' && name.endsWith('s')) name = name.slice(0, -1);
  return [prefix, name];
}
/**
 * Create all Microdata attributes for a Stencila `Node`.
 *
 * @param node The node e.g. a `Person` node
 * @param property The name of the property that this node is part of e.g `authors`
 * @param role Is this an item within an array property e.g a `Person` within `authors`
 * @param id The id used to link to / from this Microdata item
 */

function microdata(node, property, role, id) {
  return _extends({}, role !== 'array' ? microdataItem(node, property === undefined ? id : undefined) : {}, property !== undefined ? microdataProperty(property, role, id) : {});
}
/**
 * Get the HTML attribute for the root element.
 *
 * This attribute name / value pair is used to scope CSS variables to
 * the root Stencila node in an HTML document. It is used by Encoda when
 * encoding to HTML, it is in Thema to scope CSS variable thereby
 * avoiding variable name clashes from using the CSS `:root` pseudo-class.
 *
 * Although not directly related to Microdata, given it is used in potentially
 * more than one project, this appears to be the best place for it.
 */

function microdataRoot() {
  return {
    'data-root': ''
  };
}

export { CitationIntentEnumeration, arrayValidator, article, audioObject, blockContentTypes, booleanValidator, brand, cite, citeGroup, claim, code, codeBlock, codeChunk, codeError, codeExecutable, codeExecutableTypes, codeExpression, codeFragment, codeTypes, collection, comment, constantValidator, contactPoint, contactPointTypes, creativeWork, creativeWorkTypes, datatable, datatableColumn, date, definedTerm, del, emphasis, entity, entityTypes, enumValidator, enumeration, enumerationTypes, figure, function_, grant, grantTypes, heading, imageObject, include, inlineContentTypes, integerValidator, isA, isBlockContent, isEntity, isIn, isInTypeMap, isInlineContent, isMember, isPrimitive, isType, jsonLdContext, jsonLdTermName, jsonLdTermUrl, jsonLdUrl, jsonSchemaProperties, jsonSchemaTypes, jsonSchemas, link, list, listItem, mark, markTypes, math, mathBlock, mathFragment, mathTypes, mediaObject, mediaObjectTypes, microdata, microdataItem, microdataItemprop, microdataItemtype, microdataProperty, microdataRoot, microdataType, microdataUrl, monetaryGrant, nodeType, nontextualAnnotation, note, numberValidator, organization, paragraph, parameter, periodical, person, postalAddress, product, propertyValue, publicationIssue, publicationVolume, quote, quoteBlock, review, softwareApplication, softwareEnvironment, softwareSession, softwareSourceCode, stringValidator, strong, subscript, superscript, table, tableCell, tableRow, thematicBreak, thing, thingTypes, tupleValidator, unions, validator, validatorTypes, variable, version, versionMajor, versionMinor, videoObject, volumeMount };
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