docs: Describe relations with and between specs

.gitignore

@@ -4,3 +4,5 @@
 /node_modules
 /reports
 /test/error/reported.json
+
+docs/*.jar

docs/architecture.puml

@@ -0,0 +1,53 @@
+@startuml
+'Syntax: https://plantuml.com/component-diagram
+'to update the SVG after changing this file run
+'docs/puml2svg.sh
+skinparam componentStyle rectangle
+
+frame "lib/dom.js" {
+  cloud "Spec:DOM" {
+    [DOMException]
+    [DOMImplementation]
+    interface Document
+    interface Element
+    interface Node
+  }
+  component XMLSerializer [
+    XMLSerializer
+    Spec:DOM-Parsing
+  ]
+}
+
+frame "lib/dom-parser.js" {
+  component DOMParser [
+    DOMParser
+    Spec:HTML
+  ]
+
+  component DOMHandler [
+    DOMHandler
+     Spec:SAX
+  ]
+}
+
+frame "lib/sax.js" {
+  component XMLReader [
+    XMLReader
+     Spec:SAX
+  ]
+  [ParseError]
+}
+
+DOMParser -d-> DOMHandler: new
+DOMParser -r-> XMLReader: new
+XMLReader --> DOMHandler: using
+XMLReader --> ParseError: throw
+DOMHandler --> DOMImplementation: new
+DOMHandler --> Document: using
+DOMImplementation -d-> Document: new
+Document -r-> Node: new
+Document -l-> Element: new
+Document -d-> DOMException: throw
+XMLSerializer -u-> Node: visit
+
+@enduml

docs/puml2svg.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+set -eu
+if [[ ! -d docs ]] ; then
+  echo "execute from the root directory!" && exit 1
+fi
+
+export PLANTUML_VERSION=1.2021.7
+
+function svg {
+  if [[ -f "docs/$1.puml" ]] ; then
+    echo "updating docs/$1.svg"
+    if [[ -f docs/plantuml.jar ]] ; then
+      # for using java, download plantuml.jar into the docs folder from https://plantuml.com/download
+      < "docs/$1.puml" java -jar docs/plantuml.jar -pipe -tsvg -nometadata > "docs/$1.svg"
+    else
+      < "docs/$1.puml" docker run --rm -i karfau/plantuml:$PLANTUML_VERSION -pipe -tsvg -nometadata > "docs/$1.svg"
+    fi
+  else
+    echo "missing file 'docs/$1.puml'"
+  fi
+}
+
+svg architecture
+svg specs

docs/specs.puml

@@ -0,0 +1,76 @@
+@startuml
+'Syntax: https://plantuml.com/object-diagram
+'to update the SVG after changing this file run
+'docs/puml2svg.sh
+
+title "References between relevant specs"
+
+note "About spec status: [[https://www.w3.org/2020/Process-20200915/#rec-track The W3C Recommendation Track]]" as status
+
+map "W3C DOM Parsing and Serialization [[https://www.w3.org/standards/history/DOM-Parsing history]]" as DOMParsing {
+  [[https://w3c.github.io/DOM-Parsing/ latest]] => Editors Draft
+  **[[https://www.w3.org/TR/2016/WD-DOM-Parsing-20160517/ 2016]]** => Working Draft
+  [[https://www.w3.org/TR/2014/CR-DOM-Parsing-20140617/ 2014]] => Outdated Candidate Recommendation
+}
+
+map "Document Object Model (DOM) [[https://www.w3.org/standards/history/dom history]]" as DOM {
+  [[https://dom.spec.whatwg.org/ latest]] => Living Standard
+  **[[https://dom.spec.whatwg.org/review-drafts/2019-06/ Level 4 (2020)]]** => DOM Recommendation
+  [[https://www.w3.org/TR/DOM-Level-3-Core/ Level 3 Core (2004)]] => Recommendation (**[[https://dom.spec.whatwg.org/#historical has outdated parts!]]**, [[https://www.w3.org/standards/history/DOM-Level-3-Core history]])
+  **[[https://www.w3.org/TR/DOM-Level-2-HTML/ Level 2 HTML (2003)]]** => Superseded Recommendation
+  **[[https://www.w3.org/TR/DOM-Level-2-Core/ Level 2 Core (2000)]]** => Superseded Recommendation
+}
+
+map "Hyper Text Markup Language (HTML)" as HTML {
+  [[https://html.spec.whatwg.org/ latest]] => Living Standard
+  [[https://html.spec.whatwg.org/review-drafts/2020-01/ HTML5 (2020)]] => Recommendation [[https://www.w3.org/standards/history/html history]]
+  [[https://www.w3.org/TR/html401/ HTML4.01 (1999)]] => Recommendation [[https://www.w3.org/standards/history/html401 history]]
+  [[https://www.w3.org/TR/html401/ HTML4.01 (1999)]] => Superseded Recommendation [[https://www.w3.org/standards/history/html401 history]]
+  [[https://www.w3.org/TR/xhtml1/ XHTML 1.0 (2002)]] => Superseded Recommendation [[https://www.w3.org/standards/history/xhtml1 history]]
+  [[https://www.w3.org/TR/xhtml1/ XHTML 1.0 (2002)]] => Superseded Recommendation [[https://www.w3.org/standards/history/xhtml1 history]]
+
+}
+
+map "Extensible Markup Language (XML)" as XML {
+  [[https://www.w3.org/TR/xml11/ 1.1 (2006)]] => Recommendation [[https://www.w3.org/standards/history/xml11 history]]
+  [[https://www.w3.org/TR/xml/ 1.0 (2008)]] => Recommendation [[https://www.w3.org/standards/history/xml history]]
+}
+
+map "Namespaces in XML" as XMLNS {
+  [[https://www.w3.org/TR/xml-names11/ 1.1 (2006)]] => Recommendation
+  [[https://www.w3.org/TR/REC-xml-names/ 1.0 (2009)]] => Recommendation
+}
+
+map "WebIDL [[https://www.w3.org/standards/history/WebIDL-1 history]]" as WebIDL {
+  [[https://heycam.github.io/webidl/ latest]] => Editors Draft
+  [[https://www.w3.org/TR/WebIDL-1/ Level 1 (2016)]] => Recommendation
+}
+
+map "[[http://www.saxproject.org/ Simple API for XML (SAX)]]" as SAX {
+}
+
+map "[[https://infra.spec.whatwg.org/ Infra Standard]]" as Infra {
+}
+
+
+
+DOM <--> HTML
+DOM --> Infra
+DOM --> WebIDL
+DOM --> XML
+
+DOMParsing --> DOM
+DOMParsing <--> HTML
+DOMParsing --> XML
+DOMParsing --> WebIDL
+
+HTML --> Infra
+HTML --> XML
+HTML --> XMLNS
+
+SAX --> XML
+SAX --> XMLNS
+
+XMLNS --> XML
+
+@enduml

package.json

@@ -9,7 +9,8 @@
     "parser",
     "javascript",
     "DOMParser",
-    "XMLSerializer"
+    "XMLSerializer",
+    "ponyfill"
   ],
   "author": "jindw <jindw@xidea.org> (http://www.xidea.org)",
   "homepage": "https://github.com/xmldom/xmldom",