linkedom/esm/interface/document-type.js

A triple-linked lists based DOM implementation

import {DOCUMENT_TYPE_NODE} from '../shared/constants.js';
import {documentTypeAsJSON} from '../shared/jsdon.js';

import {Node} from './node.js';

/**
 * @implements globalThis.DocumentType
 */
export class DocumentType extends Node {
  constructor(ownerDocument, name, publicId = '', systemId = '') {
    super(ownerDocument, '#document-type', DOCUMENT_TYPE_NODE);
    this.name = name;
    this.publicId = publicId;
    this.systemId = systemId;
  }

  cloneNode() {
    const {ownerDocument, name, publicId, systemId} = this;
    return new DocumentType(ownerDocument, name, publicId, systemId);
  }

  toString() {
    const {name, publicId, systemId} = this;
    const hasPublic = 0 < publicId.length;
    const str = [name];
    if (hasPublic)
      str.push('PUBLIC', `"${publicId}"`);
    if (systemId.length) {
      if (!hasPublic)
        str.push('SYSTEM');
      str.push(`"${systemId}"`);
    }
    return `<!DOCTYPE ${str.join(' ')}>`;
  }

  toJSON() {
    const json = [];
    documentTypeAsJSON(this, json);
    return json;
  }
}