From 98d9d6a5b18024f63901331df98d70ed33a0b25e Mon Sep 17 00:00:00 2001
From: Jan Andrle <andrle.jan@centrum.cz>
Date: Mon, 6 Nov 2023 19:29:54 +0100
Subject: [PATCH] docs/info

---
 dist/dde-with-signals.js            | 16 ++++++++--------
 dist/dde.js                         |  2 +-
 dist/esm-with-signals.js            |  8 ++++----
 dist/esm.js                         |  2 +-
 docs/index.css                      | 27 +++++++++++++++++++--------
 docs/index.html                     | 16 ++++++++--------
 docs_src/components/example.html.js |  7 +++++--
 docs_src/index.css.js               | 20 ++++++++++++++------
 package.json                        |  2 +-
 src/dom.js                          |  7 +++----
 10 files changed, 64 insertions(+), 43 deletions(-)

diff --git a/dist/dde-with-signals.js b/dist/dde-with-signals.js
index 61a5d3e..4372403 100644
--- a/dist/dde-with-signals.js
+++ b/dist/dde-with-signals.js
@@ -1,19 +1,19 @@
 //deka-dom-el library is available via global namespace `dde`
 (()=> {
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f}}[HTMLElement,SVGElement,DocumentFragment].forEach(t=>{let{append:e}=t.prototype;t.prototype.append=function(...n){return e.apply(this,n),this}});var p=Symbol.for("Signal");function P(t){try{return Reflect.has(t,p)}catch{return!1}}var j=[],h=new WeakMap;function l(t,e){if(typeof t!="function")return J(t,e);if(P(t))return t;let n=J(),r=function(){let[o,...c]=h.get(r);if(h.set(r,new Set([o])),j.push(r),n(t()),j.pop(),!c.length)return;let s=h.get(r);for(let d of c)s.has(d)||A(d,r)};return h.set(n[p],r),h.set(r,new Set([n])),r(),n}l.action=function(t,e,...n){let r=t[p],{actions:o}=r;if(!o||!Reflect.has(o,e))throw new Error(`'${t}' has no action with name '${e}'!`);if(o[e].apply(r,n),r.skip)return Reflect.deleteProperty(r,"skip");r.listeners.forEach(c=>c(r.value))};l.on=function t(e,n,r={}){let{signal:o}=r;if(!(o&&o.aborted)){if(Array.isArray(e))return e.forEach(c=>t(c,n,r));W(e,n),o&&o.addEventListener("abort",()=>A(e,n))}};l.symbols={signal:p,onclear:Symbol.for("Signal.onclear")};var S="__dde_attributes";l.attribute=function(t,e=void 0){let n=l(e);return m.host(r=>{if(r instanceof HTMLElement?r.hasAttribute(t)&&n(r.getAttribute(t)):r.hasAttributeNS(null,t)&&n(r.getAttributeNS(null,t)),r[S]){r[S][t]=n;return}return r[S]={[t]:n},v.attributeChanged(function({detail:c}){/*! This maps attributes to signals (`S.attribute`).
+* Investigate `__dde_attributes` key of the element.*/let[s,d]=c,a=r[S][s];a&&a(d)})(r),v.disconnected(function(){/*! This removes all signals mapped to attributes (`S.attribute`).
+* Investigate `__dde_attributes` key of the element.*/l.clear(...Object.values(r[S]))})(r),r}),n};l.clear=function(...t){for(let n of t){Reflect.deleteProperty(n,"toJSON");let r=n[p];r.onclear.forEach(o=>o.call(r)),e(n,r),Reflect.deleteProperty(n,p)}function e(n,r){r.listeners.forEach(o=>{if(r.listeners.delete(o),!h.has(o))return;let c=h.get(o);c.delete(n),!(c.size>1)&&(l.clear(...c),h.delete(o))})}};var D="__dde_reactive";l.el=function(t,e){let n=document.createComment('<dde:mark type="reactive">'),r=document.createComment("</dde:mark>"),o=document.createDocumentFragment();o.append(n,r);let{current:c}=m,s=d=>{if(!n.parentNode||!r.parentNode)return A(t,s);m.push(c);let a=e(d);m.pop(),Array.isArray(a)||(a=[a]);let g=n;for(;(g=n.nextSibling)!==r;)g.remove();n.after(...a)};return W(t,s),Z(t,s,n,e),s(t()),o};var V={isSignal:P,processReactiveAttribute(t,e,n,r){if(!P(n))return n;let o=c=>r(e,c);return W(n,o),Z(n,o,t,e),n()}};function Z(t,e,...n){let{current:r}=m;r.prevent||r.host(function(o){o[D]||(o[D]=[],v.disconnected(()=>o[D].forEach(([[c,s]])=>A(c,s,c[p]?.host()===o)))(o)),o[D].push([[t,e],...n])})}function J(t,e){let n=(...r)=>r.length?it(n,...r):st(n);return ot(n,t,e)}var rt=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),M=class extends Error{constructor(){super();let[e,...n]=this.stack.split(`
+`),r=e.slice(e.indexOf("@"),e.indexOf(".js:")+4);this.stack=n.find(o=>!o.includes(r))}};function ot(t,e,n){let r=[];F(n)!=="[object Object]"&&(n={});let{onclear:o}=l.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=m;return Reflect.defineProperty(t,p,{value:{value:e,actions:n,onclear:r,host:c,listeners:new Set,defined:new M},enumerable:!1,writable:!1,configurable:!0}),t.toJSON=()=>t(),Object.setPrototypeOf(t[p],rt),t}function ct(){return j[j.length-1]}function st(t){if(!t[p])return;let{value:e,listeners:n}=t[p],r=ct();return r&&n.add(r),h.has(r)&&h.get(r).add(t),e}function it(t,e,n){if(!t[p])return;let r=t[p];if(!(!n&&r.value===e))return r.value=e,r.listeners.forEach(o=>o(e)),e}function W(t,e){if(t[p])return t[p].listeners.add(e)}function A(t,e,n){let r=t[p];if(!r)return;let o=r.listeners.delete(e);if(n&&!r.listeners.size){if(l.clear(t),!h.has(r))return o;let c=h.get(r);if(!h.has(c))return o;h.get(c).forEach(s=>A(s,c,!0))}return o}k(V);
+globalThis.dde= {S: l,
 assign: C,
 assignAttribute: q,
 classListDeclarative: Q,
-createElement: lt,
+createElement: ht,
 dispatchEvent: Et,
-el: lt,
+el: ht,
 empty: gt,
 isSignal: P,
-on: _,
+on: v,
 registerReactivity: k,
 scope: m
 };
diff --git a/dist/dde.js b/dist/dde.js
index 8dded00..1bfc9d3 100644
--- a/dist/dde.js
+++ b/dist/dde.js
@@ -1,6 +1,6 @@
 //deka-dom-el library is available via global namespace `dde`
 (()=> {
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diff --git a/dist/esm-with-signals.js b/dist/esm-with-signals.js
index 29f7fe8..603263f 100644
--- a/dist/esm-with-signals.js
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diff --git a/dist/esm.js b/dist/esm.js
index 6c76eb0..3501969 100644
--- a/dist/esm.js
+++ b/dist/esm.js
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r!=="html":f=w.call(this,document.createElementNS(r,t),e);break;case!f:f=w.call(this,document.createElement(t),e)}return a||(a=f),n.forEach(d=>d(a)),u&&x.pop(),u=2,f}var{setDeleteAttr:D}=R,A=new WeakMap;function w(t,...e){if(!e.length)return t;A.set(t,P(t,this));for(let[n,c]of Object.entries(Object.assign({},...e)))N.call(this,t,n,c);return A.delete(t),t}function N(t,e,n){let{setRemoveAttr:c,s:r}=P(t,this),u=this;n=r.processReactiveAttribute(t,e,n,(a,d)=>N.call(u,t,a,d));let[f]=e;if(f==="=")return c(e.slice(1),n);if(f===".")return L(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),c(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return c(e,n,"http://www.w3.org/1999/xlink");case"textContent":return D(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return y(r,n,L.bind(null,t[e]));case"ariaset":return y(r,n,(a,d)=>c("aria-"+a,d));case"classList":return F.call(u,t,n)}return U(t,e)?D(t,e,n):c(e,n)}function P(t,e){if(A.has(t))return A.get(t);let c=(t instanceof SVGElement?q:$).bind(null,t,"Attribute"),r=E(e);return{setRemoveAttr:c,s:r}}function F(t,e){let n=E(this);return y(n,e,(c,r)=>t.classList.toggle(c,r===-1?void 0:!!r)),t}function Q(t){return Array.from(t.children).forEach(e=>e.remove()),t}function U(t,e){if(!Reflect.has(t,e))return!1;let n=j(t,e);return!g(n.set)}function j(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||j(t,e)}function y(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([r,u]){r&&(u=t.processReactiveAttribute(e,r,u,n),n(r,u))})}function T(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function $(t,e,n,c){return t[(g(c)?"remove":"set")+e](n,T(c))}function q(t,e,n,c,r=null){return t[(g(c)?"remove":"set")+e+"NS"](r,n,T(c))}function L(t,e,n){if(Reflect.set(t,e,n),!!g(n))return Reflect.deleteProperty(t,e)}function k(t,e,...n){let c=n.length?new CustomEvent(e,{detail:n[0]}):new Event(e);return t.dispatchEvent(c)}function C(t,e,n){return function(r){return r.addEventListener(t,e,n),r}}var O=H(),z=new WeakSet;C.connected=function(t,e){let n="connected";return typeof e!="object"&&(e={}),e.once=!0,function(r){let u="dde:"+n;return r.addEventListener(u,t,e),r.__dde_lifecycleToEvents?r:r.isConnected?(r.dispatchEvent(new Event(u)),r):(_(e.signal,()=>O.offConnected(r,t))&&O.onConnected(r,t),r)}};C.disconnected=function(t,e){let n="disconnected";return typeof e!="object"&&(e={}),e.once=!0,function(r){let u="dde:"+n;return r.addEventListener(u,t,e),r.__dde_lifecycleToEvents||_(e.signal,()=>O.offDisconnected(r,t))&&O.onDisconnected(r,t),r}};C.attributeChanged=function(t,e){let n="attributeChanged";return typeof e!="object"&&(e={}),function(r){let u="dde:"+n;if(r.addEventListener(u,t,e),r.__dde_lifecycleToEvents||z.has(r))return r;let f=new MutationObserver(function(d){for(let{attributeName:l,target:h}of d)h.dispatchEvent(new CustomEvent(u,{detail:[l,h.getAttribute(l)]}))});return _(e.signal,()=>f.disconnect())&&f.observe(r,{attributes:!0}),r}};function H(){let t=new Map,e=!1,n=new MutationObserver(function(o){for(let s of o)if(s.type==="childList"){if(l(s.addedNodes,!0)){f();continue}h(s.removedNodes,!0)&&f()}});return{onConnected(o,s){u();let i=r(o);i.connected.has(s)||(i.connected.add(s),i.length_c+=1)},offConnected(o,s){if(!t.has(o))return;let i=t.get(o);i.connected.has(s)&&(i.connected.delete(s),i.length_c-=1,c(o,i))},onDisconnected(o,s){u();let i=r(o);i.disconnected.has(s)||(i.disconnected.add(s),i.length_d+=1)},offDisconnected(o,s){if(!t.has(o))return;let i=t.get(o);i.disconnected.has(s)&&(i.disconnected.delete(s),i.length_d-=1,c(o,i))}};function c(o,s){s.length_c||s.length_d||(t.delete(o),f())}function r(o){if(t.has(o))return t.get(o);let s={connected:new WeakSet,length_c:0,disconnected:new WeakSet,length_d:0};return t.set(o,s),s}function u(){e||(e=!0,n.observe(document.body,{childList:!0,subtree:!0}))}function f(){!e||t.size||(e=!1,n.disconnect())}function a(){return new Promise(function(o){(requestIdleCallback||requestAnimationFrame)(o)})}async function d(o){t.size>30&&await a();let s=[];if(!(o instanceof Node))return s;for(let i of t.keys())i===o||!(i instanceof Node)||o.contains(i)&&s.push(i);return s}function l(o,s){let i=!1;for(let p of o){if(s&&d(p).then(l),!t.has(p))continue;let m=t.get(p);m.length_c&&(p.dispatchEvent(new Event("dde:connected")),m.connected=new WeakSet,m.length_c=0,m.length_d||t.delete(p),i=!0)}return i}function h(o,s){let i=!1;for(let p of o)s&&d(p).then(h),!(!t.has(p)||!t.get(p).length_d)&&(p.dispatchEvent(new Event("dde:disconnected")),t.delete(p),i=!0);return i}}[HTMLElement,SVGElement,DocumentFragment].forEach(t=>{let{append:e}=t.prototype;t.prototype.append=function(...n){return e.apply(this,n),this}});export{w as assign,N as assignAttribute,F as classListDeclarative,J as createElement,k as dispatchEvent,J as el,Q as empty,C as on,M as registerReactivity,x as scope};
diff --git a/docs/index.css b/docs/index.css
index e83d2e7..c6ed18a 100644
--- a/docs/index.css
+++ b/docs/index.css
@@ -1,21 +1,32 @@
-:root {
-	color-scheme: dark light;
+@import url(https://cdn.simplecss.org/simple.min.css);
+:root{
 	--body-max-width: 45rem;
+	--marked: #fb3779;
+	--code: #0d47a1;
+	--accent: #d81b60;
 }
-*, ::before, ::after { box-sizing: border-box; }
-body > * {
-	margin-inline: max(.5rem, calc(50% - var(--body-max-width) / 2));
-	font-family: Tahoma, Verdana, Arial, sans-serif;
+@media (prefers-color-scheme:dark) {
+    ::backdrop, :root {
+		--accent: #f06292;
+		--code: #62c1f0;
+	}
+}
+body {
+	grid-template-columns: 1fr min(var(--body-max-width), 90%) 1fr;
 }
 h1{
 	text-align: center;
 	text-wrap: balanc;
+	grid-column: 1 / 4;
 }
 .note{
 	font-size: .9rem;
 	font-style: italic;
 }
 .example{
-	--body-max-width: 80rem;
-	height: 25rem;
+	grid-column: 1/4;
+	width: 100%;
+	max-width: calc(9/5 * var(--body-max-width));
+	height: calc(3/5 * var(--body-max-width));
+	margin-inline: auto;
 }
\ No newline at end of file
diff --git a/docs/index.html b/docs/index.html
index 18daa3c..6b22331 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="index.css"><meta name="description" content="Introducing basic concepts."><!--<dde:mark type="component" name="metaTwitter"/>--><meta name="twitter:card" content="summary_large_image"><meta name="twitter:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="twitter:title" content="deka-dom-el"><meta name="twitter:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="twitter:creator" content="@jaandrle"><!--<dde:mark type="component" name="metaFacebook"/>--><meta name="og:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="og:title" content="deka-dom-el"><meta name="og:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="og:creator" content="@jaandrle"><title>`deka-dom-el` — Introduction/Guide</title><script src="https://flems.io/flems.html" type="text/javascript" charset="utf-8"></script></head><body><!--<dde:mark type="component" name="body"/>--><h1>`deka-dom-el` — Introduction/Guide</h1><p>The library tries to provide pure JavaScript tool(s) to create reactive interfaces. The main goals are:</p><ul><li>provide a&nbsp;small wrappers/utilities around the native JavaScript DOM</li><li>keep library size around 10kB at maximum (if possible)</li><li>zero dependencies (if possible)</li><li>prefer a&nbsp;declarative/functional approach</li><li>unopinionated (allow alternative methods)</li></ul><p class="note">It is, in fact, an reimplementation of <a href="https://github.com/jaandrle/dollar_dom_component" title="GitHub repository of library. Motto: Functional DOM components without JSX and virtual DOM.">jaandrle/dollar_dom_component</a>.</p><!--<dde:mark type="component" name="example"/>--><div id="code-fjs2o" class="example"><pre><code class="language-javascript">import { el, S } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
+<!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><link rel="stylesheet" href="index.css"><meta name="description" content="Introducing basic concepts."><!--<dde:mark type="component" name="metaTwitter" host="this"/>--><meta name="twitter:card" content="summary_large_image"><meta name="twitter:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="twitter:title" content="deka-dom-el"><meta name="twitter:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="twitter:creator" content="@jaandrle"><!--<dde:mark type="component" name="metaFacebook" host="this"/>--><meta name="og:url" content="https://github.com/jaandrle/deka-dom-el"><meta name="og:title" content="deka-dom-el"><meta name="og:description" content="A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks."><meta name="og:creator" content="@jaandrle"><title>`deka-dom-el` — Introduction/Guide</title><script src="https://flems.io/flems.html" type="text/javascript" charset="utf-8"></script></head><body><!--<dde:mark type="component" name="body" host="this"/>--><h1>`deka-dom-el` — Introduction/Guide</h1><p>The library tries to provide pure JavaScript tool(s) to create reactive interfaces. The main goals are:</p><ul><li>provide a&nbsp;small wrappers/utilities around the native JavaScript DOM</li><li>keep library size around 10kB at maximum (if possible)</li><li>zero dependencies (if possible)</li><li>prefer a&nbsp;declarative/functional approach</li><li>unopinionated (allow alternative methods)</li></ul><p class="note">It is, in fact, an reimplementation of <a href="https://github.com/jaandrle/dollar_dom_component" title="GitHub repository of library. Motto: Functional DOM components without JSX and virtual DOM.">jaandrle/dollar_dom_component</a>.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-hrmiy" class="example"><pre><code class="language-javascript">import { el, S } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
 const clicks= S(0);
 document.body.append(
 	el().append(
@@ -12,7 +12,7 @@ document.body.append(
 		})
 	)
 );
-</code></pre></div><script>Flems(document.getElementById("code-fjs2o"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, S } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst clicks= S(0);\\ndocument.body.append(\\n\\tel().append(\\n\\t\\tel(\\\"p\\\", S(()=>\\n\\t\\t\\t\\\"Hello World \\\"+\\\"🎉\\\".repeat(clicks())\\n\\t\\t)),\\n\\t\\tel(\\\"button\\\", {\\n\\t\\t\\ttype: \\\"button\\\",\\n\\t\\t\\tonclick: ()=> clicks(clicks()+1),\\n\\t\\t\\ttextContent: \\\"Fire\\\"\\n\\t\\t})\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><h2>Native JavaScript DOM elements creations</h2><p>Let’s go through all patterns we would like to use and what needs to be improved for better experience.</p><h3>Creating element(s) (with custom attributes)</h3><p>You can create a native DOM element by using the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement" title="MDN documentation for document.createElement()"><code>document.createElement()</code></a>. It is also possible to provide a&nbsp;some attribute(s) declaratively using <code>Object.assign()</code>. More precisely, this way you can sets some <a href="https://developer.mozilla.org/en-US/docs/Glossary/IDL" title="MDN page about Interface Description Language"><abbr title="Interface Description Language">IDL</abbr></a>.</p><!--<dde:mark type="component" name="example"/>--><div id="code-sedyb" class="example"><pre><code class="language-javascript">document.body.append(
+</code></pre></div><script>Flems(document.getElementById("code-hrmiy"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, S } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst clicks= S(0);\\ndocument.body.append(\\n\\tel().append(\\n\\t\\tel(\\\"p\\\", S(()=>\\n\\t\\t\\t\\\"Hello World \\\"+\\\"🎉\\\".repeat(clicks())\\n\\t\\t)),\\n\\t\\tel(\\\"button\\\", {\\n\\t\\t\\ttype: \\\"button\\\",\\n\\t\\t\\tonclick: ()=> clicks(clicks()+1),\\n\\t\\t\\ttextContent: \\\"Fire\\\"\\n\\t\\t})\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><h2>Native JavaScript DOM elements creations</h2><p>Let’s go through all patterns we would like to use and what needs to be improved for better experience.</p><h3>Creating element(s) (with custom attributes)</h3><p>You can create a native DOM element by using the <a href="https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement" title="MDN documentation for document.createElement()"><code>document.createElement()</code></a>. It is also possible to provide a&nbsp;some attribute(s) declaratively using <code>Object.assign()</code>. More precisely, this way you can sets some <a href="https://developer.mozilla.org/en-US/docs/Glossary/IDL" title="MDN page about Interface Description Language"><abbr title="Interface Description Language">IDL</abbr></a>.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-x0k3n" class="example"><pre><code class="language-javascript">document.body.append(
 	document.createElement("div")
 );
 console.log(
@@ -26,7 +26,7 @@ document.body.append(
 		{ textContent: "Element’s text content.", style: "color: coral;" }
 	)
 );
-</code></pre></div><script>Flems(document.getElementById("code-sedyb"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\")\\n);\\nconsole.log(\\n\\t\\\"Emty div is generated inside <body>:\\\",\\n\\tdocument.body.innerHTML.includes(\\\"<div></div>\\\")\\n);\\n\\ndocument.body.append(\\n\\tObject.assign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Element’s text content.\\\", style: \\\"color: coral;\\\" }\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><p>To make this easier, you can use the <code>el</code> function. Internally in basic examples, it is wrapper around <code>assign(document.createElement(…), { … })</code>.</p><!--<dde:mark type="component" name="example"/>--><div id="code-n1doj" class="example"><pre><code class="language-javascript">import { el, assign } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
+</code></pre></div><script>Flems(document.getElementById("code-x0k3n"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\")\\n);\\nconsole.log(\\n\\t\\\"Emty div is generated inside <body>:\\\",\\n\\tdocument.body.innerHTML.includes(\\\"<div></div>\\\")\\n);\\n\\ndocument.body.append(\\n\\tObject.assign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Element’s text content.\\\", style: \\\"color: coral;\\\" }\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><p>To make this easier, you can use the <code>el</code> function. Internally in basic examples, it is wrapper around <code>assign(document.createElement(…), { … })</code>.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-tz88s" class="example"><pre><code class="language-javascript">import { el, assign } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
 const color= "lightcoral";
 document.body.append(
 	el("p", { textContent: "Hello (first time)", style: { color } })
@@ -37,7 +37,7 @@ document.body.append(
 		{ textContent: "Hello (second time)", style: { color } }
 	)
 );
-</code></pre></div><script>Flems(document.getElementById("code-n1doj"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, assign } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst color= \\\"lightcoral\\\";\\ndocument.body.append(\\n\\tel(\\\"p\\\", { textContent: \\\"Hello (first time)\\\", style: { color } })\\n);\\ndocument.body.append(\\n\\tassign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Hello (second time)\\\", style: { color } }\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><p>The <code>assign</code> function provides improved behaviour of <code>Object.assign()</code>. You can declaratively sets any IDL and attribute of the given element. Function prefers IDL and fallback to the <code>element.setAttribute</code> if there is no writable property in the element prototype.</p><p>You can study all JavaScript elements interfaces to the corresponding HTML elements. All HTML elements inherits from <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement">HTMLElement</a>. To see all available IDLs for example for paragraphs, see <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLParagraphElement">HTMLParagraphElement</a>. Moreover, the <code>assign</code> provides a&nbsp;way to sets declaratively some convenient properties:</p><ul><li>It is possible to sets <code>data-*</code>/<code>aria-*</code> attributes using object notation.</li><li>In opposite, it is also possible to sets <code>data-*</code>/<code>aria-*</code> attribute using camelCase notation.</li><li>You can use string or object as a&nbsp;value for <code>style</code> property.</li><li><code>className</code> (IDL – preffered)/<code>class</code> are ways to add CSS class to the element. You can use string (similarly to <code>class="…"</code> syntax in  HTML) or array of strings. This is handy to concat conditional classes.</li><li>Use <code>classList</code> to toggle specific classes. This will be handy later when the reactivity via signals is beeing introduced.</li><li>The <code>assign</code> also accepts the <code>undefined</code> as a&nbsp;value for any property to remove it from the element declaratively. Also for some IDL the corresponding attribute is removed as it can be confusing. <em>For example, natievly the element’s <code>id</code> is removed by setting the IDL to an empty string.</em></li></ul><p>For processing, the <code>assign</code> internally uses <code>assignAttribute</code> and <code>classListDeclarative</code>.</p><!--<dde:mark type="component" name="example"/>--><div id="code-yjucv" class="example"><pre><code class="language-javascript">import { assignAttribute, classListDeclarative } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
+</code></pre></div><script>Flems(document.getElementById("code-tz88s"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, assign } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst color= \\\"lightcoral\\\";\\ndocument.body.append(\\n\\tel(\\\"p\\\", { textContent: \\\"Hello (first time)\\\", style: { color } })\\n);\\ndocument.body.append(\\n\\tassign(\\n\\t\\tdocument.createElement(\\\"p\\\"),\\n\\t\\t{ textContent: \\\"Hello (second time)\\\", style: { color } }\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><p>The <code>assign</code> function provides improved behaviour of <code>Object.assign()</code>. You can declaratively sets any IDL and attribute of the given element. Function prefers IDL and fallback to the <code>element.setAttribute</code> if there is no writable property in the element prototype.</p><p>You can study all JavaScript elements interfaces to the corresponding HTML elements. All HTML elements inherits from <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement">HTMLElement</a>. To see all available IDLs for example for paragraphs, see <a href="https://developer.mozilla.org/en-US/docs/Web/API/HTMLParagraphElement">HTMLParagraphElement</a>. Moreover, the <code>assign</code> provides a&nbsp;way to sets declaratively some convenient properties:</p><ul><li>It is possible to sets <code>data-*</code>/<code>aria-*</code> attributes using object notation.</li><li>In opposite, it is also possible to sets <code>data-*</code>/<code>aria-*</code> attribute using camelCase notation.</li><li>You can use string or object as a&nbsp;value for <code>style</code> property.</li><li><code>className</code> (IDL – preffered)/<code>class</code> are ways to add CSS class to the element. You can use string (similarly to <code>class="…"</code> syntax in  HTML) or array of strings. This is handy to concat conditional classes.</li><li>Use <code>classList</code> to toggle specific classes. This will be handy later when the reactivity via signals is beeing introduced.</li><li>The <code>assign</code> also accepts the <code>undefined</code> as a&nbsp;value for any property to remove it from the element declaratively. Also for some IDL the corresponding attribute is removed as it can be confusing. <em>For example, natievly the element’s <code>id</code> is removed by setting the IDL to an empty string.</em></li></ul><p>For processing, the <code>assign</code> internally uses <code>assignAttribute</code> and <code>classListDeclarative</code>.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-8doer" class="example"><pre><code class="language-javascript">import { assignAttribute, classListDeclarative } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
 const paragraph= document.createElement("p");
 
 assignAttribute(paragraph, "textContent", "Hello, world!");
@@ -62,7 +62,7 @@ console.log(paragraph.outerHTML);
 document.body.append(
 	paragraph
 );
-</code></pre></div><script>Flems(document.getElementById("code-yjucv"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { assignAttribute, classListDeclarative } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst paragraph= document.createElement(\\\"p\\\");\\n\\nassignAttribute(paragraph, \\\"textContent\\\", \\\"Hello, world!\\\");\\nassignAttribute(paragraph, \\\"style\\\", { color: \\\"navy\\\" });\\n\\nassignAttribute(paragraph, \\\"dataTest1\\\", \\\"v1\\\");\\nassignAttribute(paragraph, \\\"dataset\\\", { test2: \\\"v2\\\" });\\n\\nassignAttribute(paragraph, \\\"ariaLabel\\\", \\\"v1\\\");\\nassignAttribute(paragraph, \\\"ariaset\\\", { role: \\\"none\\\" });\\n\\n\\nclassListDeclarative(paragraph, {\\n\\tclassAdd: true,\\n\\tclassRemove: false,\\n\\tclassAdd1: 1,\\n\\tclassRemove1: 0,\\n\\tclassToggle: -1\\n});\\n\\nconsole.log(paragraph.outerHTML);\\ndocument.body.append(\\n\\tparagraph\\n);\\n\"}],\"toolbar\":false}"));</script><h3>Native JavaScript templating</h3><p>By default, the native JS has no good way to define HTML template using DOM API:</p><!--<dde:mark type="component" name="example"/>--><div id="code-37fl6" class="example"><pre><code class="language-javascript">document.body.append(
+</code></pre></div><script>Flems(document.getElementById("code-8doer"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { assignAttribute, classListDeclarative } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\nconst paragraph= document.createElement(\\\"p\\\");\\n\\nassignAttribute(paragraph, \\\"textContent\\\", \\\"Hello, world!\\\");\\nassignAttribute(paragraph, \\\"style\\\", { color: \\\"navy\\\" });\\n\\nassignAttribute(paragraph, \\\"dataTest1\\\", \\\"v1\\\");\\nassignAttribute(paragraph, \\\"dataset\\\", { test2: \\\"v2\\\" });\\n\\nassignAttribute(paragraph, \\\"ariaLabel\\\", \\\"v1\\\");\\nassignAttribute(paragraph, \\\"ariaset\\\", { role: \\\"none\\\" });\\n\\n\\nclassListDeclarative(paragraph, {\\n\\tclassAdd: true,\\n\\tclassRemove: false,\\n\\tclassAdd1: 1,\\n\\tclassRemove1: 0,\\n\\tclassToggle: -1\\n});\\n\\nconsole.log(paragraph.outerHTML);\\ndocument.body.append(\\n\\tparagraph\\n);\\n\"}],\"toolbar\":false}"));</script><h3>Native JavaScript templating</h3><p>By default, the native JS has no good way to define HTML template using DOM API:</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-9pfmb" class="example"><pre><code class="language-javascript">document.body.append(
 	document.createElement("div"),
 	document.createElement("span"),
 	document.createElement("main")
@@ -73,7 +73,7 @@ const template= document.createElement("main").append(
 	document.createElement("span"),
 );
 console.log(typeof template==="undefined");
-</code></pre></div><script>Flems(document.getElementById("code-37fl6"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n\\tdocument.createElement(\\\"main\\\")\\n);\\nconsole.log(document.body.innerHTML.includes(\\\"<div></div><span></span><main></main>\\\"));\\nconst template= document.createElement(\\\"main\\\").append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n);\\nconsole.log(typeof template===\\\"undefined\\\");\\n\"}],\"toolbar\":false}"));</script><p>This library therefore ooverwrites the <code>append</code> method to always return parent element.</p><!--<dde:mark type="component" name="example"/>--><div id="code-6n3x9" class="example"><pre><code class="language-javascript">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
+</code></pre></div><script>Flems(document.getElementById("code-9pfmb"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"document.body.append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n\\tdocument.createElement(\\\"main\\\")\\n);\\nconsole.log(document.body.innerHTML.includes(\\\"<div></div><span></span><main></main>\\\"));\\nconst template= document.createElement(\\\"main\\\").append(\\n\\tdocument.createElement(\\\"div\\\"),\\n\\tdocument.createElement(\\\"span\\\"),\\n);\\nconsole.log(typeof template===\\\"undefined\\\");\\n\"}],\"toolbar\":false}"));</script><p>This library therefore ooverwrites the <code>append</code> method to always return parent element.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-ya3r1" class="example"><pre><code class="language-javascript">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
 document.head.append(
 	el("style").append(
 		"tr, td{ border: 1px solid red; padding: 1em; }",
@@ -97,7 +97,7 @@ document.body.append(
 		)
 	)
 );
-</code></pre></div><script>Flems(document.getElementById("code-6n3x9"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\"tr, td{ border: 1px solid red; padding: 1em; }\\\",\\n\\t\\t\\\"table{ border-collapse: collapse; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(\\\"p\\\", \\\"Example of a complex template. Using for example nesting lists:\\\"),\\n\\tel(\\\"ul\\\").append(\\n\\t\\tel(\\\"li\\\", \\\"List item 1\\\"),\\n\\t\\tel(\\\"li\\\").append(\\n\\t\\t\\tel(\\\"ul\\\").append(\\n\\t\\t\\t\\tel(\\\"li\\\", \\\"Nested list item 1\\\"),\\n\\t\\t\\t)\\n\\t\\t)\\n\\t),\\n\\tel(\\\"table\\\").append(\\n\\t\\tel(\\\"tr\\\").append(\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 – Col 1\\\"),\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 – Col 2\\\")\\n\\t\\t)\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><h2>Creating advanced (reactive) templates and components</h2><h3>Basic components</h3><p>You can use functions for encapsulation (repeating) logic. The <code>el</code> accepts function as first argument. In that case, the function should return dom elements and the second argument for <code>el</code> is argument for given element.</p><!--<dde:mark type="component" name="example"/>--><div id="code-n9drq" class="example"><pre><code class="language-javascript">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
+</code></pre></div><script>Flems(document.getElementById("code-ya3r1"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\"tr, td{ border: 1px solid red; padding: 1em; }\\\",\\n\\t\\t\\\"table{ border-collapse: collapse; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(\\\"p\\\", \\\"Example of a complex template. Using for example nesting lists:\\\"),\\n\\tel(\\\"ul\\\").append(\\n\\t\\tel(\\\"li\\\", \\\"List item 1\\\"),\\n\\t\\tel(\\\"li\\\").append(\\n\\t\\t\\tel(\\\"ul\\\").append(\\n\\t\\t\\t\\tel(\\\"li\\\", \\\"Nested list item 1\\\"),\\n\\t\\t\\t)\\n\\t\\t)\\n\\t),\\n\\tel(\\\"table\\\").append(\\n\\t\\tel(\\\"tr\\\").append(\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 – Col 1\\\"),\\n\\t\\t\\tel(\\\"td\\\", \\\"Row 1 – Col 2\\\")\\n\\t\\t)\\n\\t)\\n);\\n\"}],\"toolbar\":false}"));</script><h2>Creating advanced (reactive) templates and components</h2><h3>Basic components</h3><p>You can use functions for encapsulation (repeating) logic. The <code>el</code> accepts function as first argument. In that case, the function should return dom elements and the second argument for <code>el</code> is argument for given element.</p><!--<dde:mark type="component" name="example" host="this"/>--><div id="code-5abxx" class="example"><pre><code class="language-javascript">import { el } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js";
 document.head.append(
 	el("style").append(
 		".class1{ font-weight: bold; }",
@@ -114,4 +114,4 @@ function component({ className, textContent }){
 		el("p", textContent)
 	);
 }
-</code></pre></div><script>Flems(document.getElementById("code-n9drq"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\".class1{ font-weight: bold; }\\\",\\n\\t\\t\\\".class2{ color: purple; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(component, { className: \\\"class2\\\", textContent: \\\"Hello World!\\\" }),\\n\\tcomponent({ className: \\\"class2\\\", textContent: \\\"Hello World!\\\" })\\n);\\n\\nfunction component({ className, textContent }){\\n\\treturn el(\\\"div\\\", { className: [ \\\"class1\\\", className ] }).append(\\n\\t\\tel(\\\"p\\\", textContent)\\n\\t);\\n}\\n\"}],\"toolbar\":false}"));</script><p>It is nice to use similar naming convention as native DOM API.</p><script src="https://cdn.jsdelivr.net/npm/shiki"></script><script src="index.js" type="module"></script></body></html>
\ No newline at end of file
+</code></pre></div><script>Flems(document.getElementById("code-5abxx"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-signals.js\\\";\\ndocument.head.append(\\n\\tel(\\\"style\\\").append(\\n\\t\\t\\\".class1{ font-weight: bold; }\\\",\\n\\t\\t\\\".class2{ color: purple; }\\\"\\n\\t)\\n);\\ndocument.body.append(\\n\\tel(component, { className: \\\"class2\\\", textContent: \\\"Hello World!\\\" }),\\n\\tcomponent({ className: \\\"class2\\\", textContent: \\\"Hello World!\\\" })\\n);\\n\\nfunction component({ className, textContent }){\\n\\treturn el(\\\"div\\\", { className: [ \\\"class1\\\", className ] }).append(\\n\\t\\tel(\\\"p\\\", textContent)\\n\\t);\\n}\\n\"}],\"toolbar\":false}"));</script><p>It is nice to use similar naming convention as native DOM API.</p><script src="https://cdn.jsdelivr.net/npm/shiki"></script><script src="index.js" type="module"></script></body></html>
\ No newline at end of file
diff --git a/docs_src/components/example.html.js b/docs_src/components/example.html.js
index 88a2f8e..23aaafe 100644
--- a/docs_src/components/example.html.js
+++ b/docs_src/components/example.html.js
@@ -2,8 +2,11 @@ let is_registered= false;
 import { styles } from "../index.css.js";
 export const css= styles().scope(example).css`
 :host{
-	--body-max-width: 80rem;
-	height: 25rem;
+	grid-column: 1/4;
+	width: 100%;
+	max-width: calc(9/5 * var(--body-max-width));
+	height: calc(3/5 * var(--body-max-width));
+	margin-inline: auto;
 }
 `
 import { el } from "deka-dom-el";
diff --git a/docs_src/index.css.js b/docs_src/index.css.js
index 4688377..f926eb5 100644
--- a/docs_src/index.css.js
+++ b/docs_src/index.css.js
@@ -28,17 +28,25 @@ export function css(...a){
 }
 export function styles(){ return Object.assign(Object.create(s), { content: "" }); }
 export const common= css`
-:root {
-	color-scheme: dark light;
+@import url(https://cdn.simplecss.org/simple.min.css);
+:root{
 	--body-max-width: 45rem;
+	--marked: #fb3779;
+	--code: #0d47a1;
+	--accent: #d81b60;
 }
-*, ::before, ::after { box-sizing: border-box; }
-body > * {
-	margin-inline: max(.5rem, calc(50% - var(--body-max-width) / 2));
-	font-family: Tahoma, Verdana, Arial, sans-serif;
+@media (prefers-color-scheme:dark) {
+    ::backdrop, :root {
+		--accent: #f06292;
+		--code: #62c1f0;
+	}
+}
+body {
+	grid-template-columns: 1fr min(var(--body-max-width), 90%) 1fr;
 }
 h1{
 	text-align: center;
 	text-wrap: balanc;
+	grid-column: 1 / 4;
 }
 `;
diff --git a/package.json b/package.json
index d127607..4445d9a 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
 		"latedef": "true",
 		"maxparams": 5,
 		"maxdepth": 3,
-		"maxcomplexity": 13,
+		"maxcomplexity": 14,
 		"globals": {
 			"requestIdleCallback": false,
 			"AbortController": false,
diff --git a/src/dom.js b/src/dom.js
index 85d1ac2..37f5c48 100644
--- a/src/dom.js
+++ b/src/dom.js
@@ -52,10 +52,10 @@ export function createElement(tag, attributes, ...connect){
 			scoped= 1;
 			scope.push({ scope: tag, host: c=> c ? (scoped===1 ? connect.unshift(c) : c(el_host), undefined) : el_host });
 			el= tag(attributes || undefined);
-			const el_mark= document.createComment(`<dde:mark type="component" name="${tag.name}"/>`);
+			const is_fragment= el instanceof DocumentFragment;
+			const el_mark= document.createComment(`<dde:mark type="component" name="${tag.name}" host="${is_fragment ? "this" : "parentElement"}"/>`);
 			el.prepend(el_mark);
-			if(el instanceof DocumentFragment)
-				el_host= el_mark;
+			if(is_fragment) el_host= el_mark;
 			break;
 		}
 		case tag==="#text":      el= assign.call(this, document.createTextNode(""), attributes); break;
@@ -84,7 +84,6 @@ export function assign(element, ...attributes){
 	return element;
 }
 export function assignAttribute(element, key, value){
-	/* jshint maxcomplexity:14 */
 	const { setRemoveAttr, s }= assignContext(element, this);
 	const _this= this;