diff --git a/dist/dde-with-observables.js b/dist/dde-with-observables.js
index 3907924..72528c0 100644
--- a/dist/dde-with-observables.js
+++ b/dist/dde-with-observables.js
@@ -1,27 +1,30 @@
 //deka-dom-el library is available via global namespace `dde`
 (()=> {
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This maps attributes to observables (`S.attribute`).
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-assign: P,
+assign: A,
 assignAttribute: Z,
-chainableAppend: te,
-classListDeclarative: ne,
-createElement: y,
-createElementNS: Ee,
-dispatchEvent: we,
-el: y,
-elNS: Ee,
-elementAttribute: O,
-empty: xe,
+chainableAppend: ne,
+classListDeclarative: oe,
+createElement: R,
+createElementNS: _e,
+customElementRender: Se,
+customElementWithDDE: Ce,
+dispatchEvent: Pe,
+el: R,
+elNS: _e,
+elementAttribute: _,
+empty: Oe,
 isObservable: W,
+lifecycleToEvents: Ce,
 observable: m,
-on: _,
-registerReactivity: T,
-scope: b,
-simulateSlots: _e
+on: E,
+registerReactivity: M,
+scope: p,
+simulateSlots: xe
 };
 
 })();
\ No newline at end of file
diff --git a/dist/dde.js b/dist/dde.js
index 1286bc5..d1540de 100644
--- a/dist/dde.js
+++ b/dist/dde.js
@@ -1,21 +1,24 @@
 //deka-dom-el library is available via global namespace `dde`
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+var m={isObservable(t){return!1},processReactiveAttribute(t,e,n,c){return n}};function q(t,e=!0){return e?Object.assign(m,t):(Object.setPrototypeOf(t,m),t)}function y(t){return m.isPrototypeOf(t)&&t!==m?t:m}function v(t){return typeof t>"u"}function w(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}var R={setDeleteAttr:F,ssr:""};function F(t,e,n){if(Reflect.set(t,e,n),!!v(n)){if(Reflect.deleteProperty(t,e),t instanceof HTMLElement&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var b=[{scope:document.body,host:t=>t?t(document.body):document.body,custom_element:!1,prevent:!0}],g={get current(){return b[b.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...b]},push(t={}){return 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U(r),s||(s=r),n.forEach(a=>a(s)),o&&g.pop(),o=2,r}function nt(t,e=t,n=void 0){let c=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((s,a)=>Reflect.set(s,a.name||c,a)&&s,{}),r=Reflect.has(o,c);if(t.append=new Proxy(t.append,{apply(s,a,d){if(!d.length)return t;let l=document.createDocumentFragment();for(let p of d){if(!p||!p.slot){r&&l.appendChild(p);continue}let i=p.slot,u=o[i];H(p,"remove","slot"),u&&(z(u,p,n),Reflect.deleteProperty(o,i))}return r&&(o[c].replaceWith(l),Reflect.deleteProperty(o,c)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(a=>a.remove()),t.append(...s)}return e}function z(t,e,n){n&&n(t,e);try{t.replaceWith(x(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}N.mark=function(t,e=!1){t=Object.entries(t).map(([o,r])=>o+`="${r}"`).join(" ");let n=e?"":"/",c=document.createComment(`<dde:mark ${t}${R.ssr}${n}>`);return e||(c.end=document.createComment("</dde:mark>")),c};function rt(t){let e=this;return function(...c){A=t;let o=N.call(e,...c);return A=void 0,o}}var{setDeleteAttr:P}=R,C=new WeakMap;function x(t,...e){if(!e.length)return t;C.set(t,T(t,this));for(let[n,c]of Object.entries(Object.assign({},...e)))j.call(this,t,n,c);return C.delete(t),t}function j(t,e,n){let{setRemoveAttr:c,s:o}=T(t,this),r=this;n=o.processReactiveAttribute(t,e,n,(a,d)=>j.call(r,t,a,d));let[s]=e;if(s==="=")return c(e.slice(1),n);if(s===".")return W(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 P(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return S(o,n,W.bind(null,t[e]));case"ariaset":return S(o,n,(a,d)=>c("aria-"+a,d));case"classList":return B.call(r,t,n)}return I(t,e)?P(t,e,n):c(e,n)}function T(t,e){if(C.has(t))return C.get(t);let c=(t instanceof SVGElement?G:Z).bind(null,t,"Attribute"),o=y(e);return{setRemoveAttr:c,s:o}}function B(t,e){let n=y(this);return S(n,e,(c,o)=>t.classList.toggle(c,o===-1?void 0:!!o)),t}function ot(t){return Array.from(t.children).forEach(e=>e.remove()),t}function H(t,e,n,c){return t instanceof HTMLElement?t[e+"Attribute"](n,c):t[e+"AttributeNS"](null,n,c)}function I(t,e){if(!Reflect.has(t,e))return!1;let n=M(t,e);return!v(n.set)}function M(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||M(t,e)}function S(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,r]){o&&(r=t.processReactiveAttribute(e,o,r,n),n(o,r))})}function $(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function Z(t,e,n,c){return t[(v(c)?"remove":"set")+e](n,$(c))}function G(t,e,n,c,o=null){return t[(v(c)?"remove":"set")+e+"NS"](o,n,$(c))}function W(t,e,n){if(Reflect.set(t,e,n),!!v(n))return Reflect.deleteProperty(t,e)}function ut(t,e,n=t){g.push({scope:t,host:(...o)=>o.length?o.forEach(r=>r(t)):t,custom_element:t});let c=e.call(t,n);return g.pop(),c}function ft(t){for(let n of["connected","disconnected"])k(t.prototype,n+"Callback",function(c,o,r){c.apply(o,r),o.dispatchEvent(new Event("dde:"+n))});let e="attributeChanged";return k(t.prototype,e+"Callback",function(n,c,o){let[r,,s]=o;c.dispatchEvent(new CustomEvent("dde:"+e,{detail:[r,s]})),n.apply(c,o)}),t.prototype.__dde_lifecycleToEvents=!0,t}function k(t,e,n){t[e]=new Proxy(t[e]||(()=>{}),{apply:n})}function dt(t,e,n){return e||(e={}),function(o,...r){n&&(r.unshift(o),o=typeof n=="function"?n():n);let s=r.length?new CustomEvent(t,Object.assign({detail:r[0]},e)):new Event(t,e);return o.dispatchEvent(s)}}function _(t,e,n){return function(o){return o.addEventListener(t,e,n),o}}var O=J(),V=new WeakSet;_.connected=function(t,e){let{custom_element:n}=g.current,c="connected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let s="dde:"+c;return r.addEventListener(s,t,e),r.__dde_lifecycleToEvents?r:r.isConnected?(r.dispatchEvent(new Event(s)),r):(w(e.signal,()=>O.offConnected(r,t))&&O.onConnected(r,t),r)}};_.disconnected=function(t,e){let{custom_element:n}=g.current,c="disconnected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let s="dde:"+c;return r.addEventListener(s,t,e),r.__dde_lifecycleToEvents||w(e.signal,()=>O.offDisconnected(r,t))&&O.onDisconnected(r,t),r}};var D=new WeakMap;_.disconnectedAsAbort=function(t){if(D.has(t))return D.get(t);let e=new AbortController;return D.set(t,e),t(_.disconnected(()=>e.abort())),e};_.attributeChanged=function(t,e){let n="attributeChanged";return typeof e!="object"&&(e={}),function(o){let r="dde:"+n;if(o.addEventListener(r,t,e),o.__dde_lifecycleToEvents||V.has(o))return o;let s=new MutationObserver(function(d){for(let{attributeName:l,target:p}of d)p.dispatchEvent(new CustomEvent(r,{detail:[l,p.getAttribute(l)]}))});return w(e.signal,()=>s.disconnect())&&s.observe(o,{attributes:!0}),o}};function J(){let t=new Map,e=!1,n=new MutationObserver(function(i){for(let u of i)if(u.type==="childList"){if(l(u.addedNodes,!0)){s();continue}p(u.removedNodes,!0)&&s()}});return{onConnected(i,u){r();let f=o(i);f.connected.has(u)||(f.connected.add(u),f.length_c+=1)},offConnected(i,u){if(!t.has(i))return;let f=t.get(i);f.connected.has(u)&&(f.connected.delete(u),f.length_c-=1,c(i,f))},onDisconnected(i,u){r();let f=o(i);f.disconnected.has(u)||(f.disconnected.add(u),f.length_d+=1)},offDisconnected(i,u){if(!t.has(i))return;let f=t.get(i);f.disconnected.has(u)&&(f.disconnected.delete(u),f.length_d-=1,c(i,f))}};function c(i,u){u.length_c||u.length_d||(t.delete(i),s())}function o(i){if(t.has(i))return t.get(i);let u={connected:new WeakSet,length_c:0,disconnected:new WeakSet,length_d:0};return t.set(i,u),u}function r(){e||(e=!0,n.observe(document.body,{childList:!0,subtree:!0}))}function s(){!e||t.size||(e=!1,n.disconnect())}function a(){return new Promise(function(i){(requestIdleCallback||requestAnimationFrame)(i)})}async function d(i){t.size>30&&await a();let u=[];if(!(i instanceof Node))return u;for(let f of t.keys())f===i||!(f instanceof Node)||i.contains(f)&&u.push(f);return u}function l(i,u){let f=!1;for(let h of i){if(u&&d(h).then(l),!t.has(h))continue;let E=t.get(h);E.length_c&&(h.dispatchEvent(new Event("dde:connected")),E.connected=new WeakSet,E.length_c=0,E.length_d||t.delete(h),f=!0)}return f}function p(i,u){let f=!1;for(let h of i)u&&d(h).then(p),!(!t.has(h)||!t.get(h).length_d)&&(h.dispatchEvent(new Event("dde:disconnected")),t.delete(h),f=!0);return f}}
+globalThis.dde= {assign: x,
+assignAttribute: j,
 chainableAppend: U,
-classListDeclarative: z,
-createElement: C,
-createElementNS: et,
-dispatchEvent: ct,
-el: C,
-elNS: et,
-elementAttribute: B,
-empty: nt,
+classListDeclarative: B,
+createElement: N,
+createElementNS: rt,
+customElementRender: ut,
+customElementWithDDE: ft,
+dispatchEvent: dt,
+el: N,
+elNS: rt,
+elementAttribute: H,
+empty: ot,
+lifecycleToEvents: ft,
 on: _,
 registerReactivity: q,
-scope: E,
-simulateSlots: tt
+scope: g,
+simulateSlots: nt
 };
 
 })();
\ No newline at end of file
diff --git a/dist/esm-with-observables.d.ts b/dist/esm-with-observables.d.ts
index e4c7aa2..debccbe 100644
--- a/dist/esm-with-observables.d.ts
+++ b/dist/esm-with-observables.d.ts
@@ -107,18 +107,19 @@ type _fromElsInterfaces<EL extends SupportedElement>= Omit<EL, keyof AttrsModifi
  * There is added support for `data[A-Z].*`/`aria[A-Z].*` to be converted to the kebab-case alternatives.
  * @private
  */
-type ElementAttributes<T extends SupportedElement>= Partial<_fromElsInterfaces<T> & { [K in keyof _fromElsInterfaces<T>]: Observable<_fromElsInterfaces<T>[K], any> } & AttrsModified>;
+type ElementAttributes<T extends SupportedElement>= Partial<_fromElsInterfaces<T> & { [K in keyof _fromElsInterfaces<T>]: Observable<_fromElsInterfaces<T>[K], any> } & AttrsModified> & Record<string, any>;
 export function classListDeclarative<El extends SupportedElement>(element: El, classList: AttrsModified["classList"]): El
 export function assign<El extends SupportedElement>(element: El, ...attrs_array: ElementAttributes<El>[]): El
 export function assignAttribute<El extends SupportedElement, ATT extends keyof ElementAttributes<El>>(element: El, attr: ATT, value: ElementAttributes<El>[ATT]): ElementAttributes<El>[ATT]
 
 type ExtendedHTMLElementTagNameMap= HTMLElementTagNameMap & CustomElementTagNameMap & ddePublicElementTagNameMap
+type textContent= string | ( (set?: string)=> string ); // TODO: for some reason `Observable<string, any>` leads to `attrs?: any`
 export function el<
 	TAG extends keyof ExtendedHTMLElementTagNameMap & string,
 	EL extends (TAG extends keyof ExtendedHTMLElementTagNameMap ? ExtendedHTMLElementTagNameMap[TAG] : HTMLElement)
 >(
 	tag_name: TAG,
-	attrs?: string | Observable<string, any> | ElementAttributes<EL>,
+	attrs?: ElementAttributes<EL> | textContent,
 	...addons: ddeElementAddon<EL>[]
 ): TAG extends keyof ddeHTMLElementTagNameMap ? ddeHTMLElementTagNameMap[TAG] : ddeHTMLElement
 export function el(
@@ -126,34 +127,39 @@ export function el(
 ): ddeDocumentFragment
 
 export function el<
-	A extends ddeComponentAttributes,
-	C extends (attr: Partial<A>)=> SupportedElement | DocumentFragment
+	C extends (attr: ddeComponentAttributes)=> SupportedElement | ddeDocumentFragment
 >(
 	component: C,
-	attrs?: A | string,
+	attrs?: Parameters<C>[0] | textContent,
 	...addons: ddeElementAddon<ReturnType<C>>[]
-): ReturnType<C>
+): ReturnType<C> extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? ReturnType<C> : ( ReturnType<C> extends ddeDocumentFragment ? ReturnType<C> : ddeHTMLElement )
 export { el as createElement }
 
 export function elNS(
 	namespace: "http://www.w3.org/2000/svg"
-): <TAG, EL extends ( TAG extends keyof ddeSVGElementTagNameMap ? ddeSVGElementTagNameMap[TAG] : ddeSVGElement ), KEYS extends keyof EL & { d: string }>(
+): <
+	TAG extends keyof SVGElementTagNameMap & string,
+	EL extends ( TAG extends keyof SVGElementTagNameMap ? SVGElementTagNameMap[TAG] : SVGElement ),
+>(
 	tag_name: TAG,
-	attrs?: string | Partial<{ [key in KEYS]: EL[key] | string | number | boolean }>,
+	attrs?: ElementAttributes<EL> | textContent,
 	...addons: ddeElementAddon<EL>[]
-)=> EL
+)=>  TAG extends keyof ddeSVGElementTagNameMap ? ddeSVGElementTagNameMap[TAG] : ddeSVGElement
 export function elNS(
 	namespace: "http://www.w3.org/1998/Math/MathML"
-): <TAG extends keyof MathMLElementTagNameMap, KEYS extends keyof MathMLElementTagNameMap[TAG] & { d: string }>(
+): <
+	TAG extends keyof MathMLElementTagNameMap & string,
+	EL extends ( TAG extends keyof MathMLElementTagNameMap ? MathMLElementTagNameMap[TAG] : MathMLElement ),
+>(
 	tag_name: TAG,
-	attrs?: string | Partial<{ [key in KEYS]: MathMLElementTagNameMap[TAG][key] | string | number | boolean }>,
-	...addons: ddeElementAddon<MathMLElementTagNameMap[TAG]>[]
+	attrs?: string | textContent | Partial<{ [key in keyof EL]: EL[key] | Observable<EL[key], any> | string | number | boolean }>,
+	...addons: ddeElementAddon<EL>[]
 )=> ddeMathMLElement
 export function elNS(
 	namespace: string
 ): (
 	tag_name: string,
-	attrs?: string | Record<string, any>,
+	attrs?: string | textContent | Record<string, any>,
 	...addons: ddeElementAddon<SupportedElement>[]
 )=> SupportedElement
 export { elNS as createElementNS }
diff --git a/dist/esm-with-observables.js b/dist/esm-with-observables.js
index 5274bff..6d845a0 100644
--- a/dist/esm-with-observables.js
+++ b/dist/esm-with-observables.js
@@ -1,4 +1,4 @@
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state(){return[...E]},push(e={}){return E.push(Object.assign({},this.current,{prevent:!1},e))},pushRoot(){return E.push(E[0])},pop(){if(E.length!==1)return E.pop()}};function H(...e){return this.appendOriginal(...e),this}function te(e){return e.append===H||(e.appendOriginal=e.append,e.append=H),e}var j;function y(e,t,...n){let r=C(this),o=0,c,s;switch((Object(t)!==t||r.isObservable(t))&&(t={textContent:t}),!0){case typeof e=="function":{o=1,b.push({scope:e,host:(...l)=>l.length?(o===1?n.unshift(...l):l.forEach(v=>v(s)),void 0):s}),c=e(t||void 0);let d=c instanceof DocumentFragment;if(c.nodeName==="#comment")break;let u=y.mark({type:"component",name:e.name,host:d?"this":"parentElement"});c.prepend(u),d&&(s=u);break}case e==="#text":c=P.call(this,document.createTextNode(""),t);break;case(e==="<>"||!e):c=P.call(this,document.createDocumentFragment(),t);break;case!!j:c=P.call(this,document.createElementNS(j,e),t);break;case!c:c=P.call(this,document.createElement(e),t)}return te(c),s||(s=c),n.forEach(d=>d(s)),o&&b.pop(),o=2,c}function _e(e){let t=Symbol.for("default"),n=Array.from(e.querySelectorAll("slot")).reduce((o,c)=>Reflect.set(o,c.name||t,c)&&o,{}),r=Reflect.has(n,t);return e.append=new Proxy(e.append,{apply(o,c,s){if(!s.length)return e;let d=document.createDocumentFragment();for(let u of s){if(!u||!u.slot){r&&d.appendChild(u);continue}let l=u.slot,v=n[l];O(u,"remove","slot"),v&&(v.replaceWith(u),Reflect.deleteProperty(n,l))}return r&&(n[t].replaceWith(d),Reflect.deleteProperty(n,t)),Object.values(n).forEach(u=>u.replaceWith(y().append(...Array.from(u.childNodes)))),e}}),e}y.mark=function(e,t=!1){e=Object.entries(e).map(([o,c])=>o+`="${c}"`).join(" ");let n=t?"":"/",r=document.createComment(`<dde:mark ${e}${$.ssr}${n}>`);return t||(r.end=document.createComment("</dde:mark>")),r};function Ee(e){let t=this;return function(...r){j=e;let o=y.call(t,...r);return j=void 0,o}}var{setDeleteAttr:I}=$,L=new WeakMap;function P(e,...t){if(!t.length)return e;L.set(e,G(e,this));for(let[n,r]of Object.entries(Object.assign({},...t)))Z.call(this,e,n,r);return L.delete(e),e}function Z(e,t,n){let{setRemoveAttr:r,s:o}=G(e,this),c=this;n=o.processReactiveAttribute(e,t,n,(d,u)=>Z.call(c,e,d,u));let[s]=t;if(s==="=")return r(t.slice(1),n);if(s===".")return J(e,t.slice(1),n);if(/(aria|data)([A-Z])/.test(t))return t=t.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(t,n);switch(t==="className"&&(t="class"),t){case"xlink:href":return r(t,n,"http://www.w3.org/1999/xlink");case"textContent":return I(e,t,n);case"style":if(typeof n!="object")break;case"dataset":return F(o,n,J.bind(null,e[t]));case"ariaset":return F(o,n,(d,u)=>r("aria-"+d,u));case"classList":return ne.call(c,e,n)}return re(e,t)?I(e,t,n):r(t,n)}function G(e,t){if(L.has(e))return L.get(e);let r=(e instanceof SVGElement?ce:oe).bind(null,e,"Attribute"),o=C(t);return{setRemoveAttr:r,s:o}}function ne(e,t){let n=C(this);return F(n,t,(r,o)=>e.classList.toggle(r,o===-1?void 0:!!o)),e}function 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This maps attributes to observables (`S.attribute`).
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+* Investigate `__dde_attributes` key of the element.*/m.clear(...Object.values(r[S]))})(r)}),new Proxy(n,{apply(o,c,s){if(!s.length)return o();let u=s[0];return _(r,"set",e,u)}})};var Y={isObservable:W,processReactiveAttribute(e,t,n,r){if(!W(n))return n;let o=c=>r(t,c);return U(n,o),ee(n,o,e,t),n()}};function ee(e,t,...n){let{current:r}=p;r.prevent||r.host(function(o){o[k]||(o[k]=[],E.disconnected(()=>o[k].forEach(([[c,s]])=>C(c,s,c[h]?.host()===o)))(o)),o[k].push([[e,t],...n])})}function X(e,t){let n=(...r)=>r.length?he(n,...r):pe(n);return de(n,e,t)}var ae=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),q=class extends Error{constructor(){super();let[t,...n]=this.stack.split(`
+`),r=t.slice(t.indexOf("@"),t.indexOf(".js:")+4);this.stack=n.find(o=>!o.includes(r))}};function de(e,t,n){let r=[];B(n)!=="[object Object]"&&(n={});let{onclear:o}=m.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=p;return Reflect.defineProperty(e,h,{value:{value:t,actions:n,onclear:r,host:c,listeners:new Set,defined:new q},enumerable:!1,writable:!1,configurable:!0}),e.toJSON=()=>e(),Object.setPrototypeOf(e[h],ae),e}function le(){return T[T.length-1]}function pe(e){if(!e[h])return;let{value:t,listeners:n}=e[h],r=le();return r&&n.add(r),g.has(r)&&g.get(r).add(e),t}function he(e,t,n){if(!e[h])return;let r=e[h];if(!(!n&&r.value===t))return r.value=t,r.listeners.forEach(o=>o(t)),t}function U(e,t){if(e[h])return e[h].listeners.add(t)}function C(e,t,n){let r=e[h];if(!r)return;let o=r.listeners.delete(t);if(n&&!r.listeners.size){if(e.clear(e),!g.has(r))return o;let c=g.get(r);if(!g.has(c))return o;g.get(c).forEach(s=>C(s,c,!0))}return o}M(Y);export{m as O,A as assign,Z as assignAttribute,ne as chainableAppend,oe as classListDeclarative,R as createElement,_e as createElementNS,Se as customElementRender,Ce as customElementWithDDE,Pe as dispatchEvent,R as el,_e as elNS,_ as elementAttribute,Oe as empty,W as isObservable,Ce as lifecycleToEvents,m as observable,E as on,M as registerReactivity,p as scope,xe as simulateSlots};
diff --git a/dist/esm.d.ts b/dist/esm.d.ts
index e4c7aa2..debccbe 100644
--- a/dist/esm.d.ts
+++ b/dist/esm.d.ts
@@ -107,18 +107,19 @@ type _fromElsInterfaces<EL extends SupportedElement>= Omit<EL, keyof AttrsModifi
  * There is added support for `data[A-Z].*`/`aria[A-Z].*` to be converted to the kebab-case alternatives.
  * @private
  */
-type ElementAttributes<T extends SupportedElement>= Partial<_fromElsInterfaces<T> & { [K in keyof _fromElsInterfaces<T>]: Observable<_fromElsInterfaces<T>[K], any> } & AttrsModified>;
+type ElementAttributes<T extends SupportedElement>= Partial<_fromElsInterfaces<T> & { [K in keyof _fromElsInterfaces<T>]: Observable<_fromElsInterfaces<T>[K], any> } & AttrsModified> & Record<string, any>;
 export function classListDeclarative<El extends SupportedElement>(element: El, classList: AttrsModified["classList"]): El
 export function assign<El extends SupportedElement>(element: El, ...attrs_array: ElementAttributes<El>[]): El
 export function assignAttribute<El extends SupportedElement, ATT extends keyof ElementAttributes<El>>(element: El, attr: ATT, value: ElementAttributes<El>[ATT]): ElementAttributes<El>[ATT]
 
 type ExtendedHTMLElementTagNameMap= HTMLElementTagNameMap & CustomElementTagNameMap & ddePublicElementTagNameMap
+type textContent= string | ( (set?: string)=> string ); // TODO: for some reason `Observable<string, any>` leads to `attrs?: any`
 export function el<
 	TAG extends keyof ExtendedHTMLElementTagNameMap & string,
 	EL extends (TAG extends keyof ExtendedHTMLElementTagNameMap ? ExtendedHTMLElementTagNameMap[TAG] : HTMLElement)
 >(
 	tag_name: TAG,
-	attrs?: string | Observable<string, any> | ElementAttributes<EL>,
+	attrs?: ElementAttributes<EL> | textContent,
 	...addons: ddeElementAddon<EL>[]
 ): TAG extends keyof ddeHTMLElementTagNameMap ? ddeHTMLElementTagNameMap[TAG] : ddeHTMLElement
 export function el(
@@ -126,34 +127,39 @@ export function el(
 ): ddeDocumentFragment
 
 export function el<
-	A extends ddeComponentAttributes,
-	C extends (attr: Partial<A>)=> SupportedElement | DocumentFragment
+	C extends (attr: ddeComponentAttributes)=> SupportedElement | ddeDocumentFragment
 >(
 	component: C,
-	attrs?: A | string,
+	attrs?: Parameters<C>[0] | textContent,
 	...addons: ddeElementAddon<ReturnType<C>>[]
-): ReturnType<C>
+): ReturnType<C> extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? ReturnType<C> : ( ReturnType<C> extends ddeDocumentFragment ? ReturnType<C> : ddeHTMLElement )
 export { el as createElement }
 
 export function elNS(
 	namespace: "http://www.w3.org/2000/svg"
-): <TAG, EL extends ( TAG extends keyof ddeSVGElementTagNameMap ? ddeSVGElementTagNameMap[TAG] : ddeSVGElement ), KEYS extends keyof EL & { d: string }>(
+): <
+	TAG extends keyof SVGElementTagNameMap & string,
+	EL extends ( TAG extends keyof SVGElementTagNameMap ? SVGElementTagNameMap[TAG] : SVGElement ),
+>(
 	tag_name: TAG,
-	attrs?: string | Partial<{ [key in KEYS]: EL[key] | string | number | boolean }>,
+	attrs?: ElementAttributes<EL> | textContent,
 	...addons: ddeElementAddon<EL>[]
-)=> EL
+)=>  TAG extends keyof ddeSVGElementTagNameMap ? ddeSVGElementTagNameMap[TAG] : ddeSVGElement
 export function elNS(
 	namespace: "http://www.w3.org/1998/Math/MathML"
-): <TAG extends keyof MathMLElementTagNameMap, KEYS extends keyof MathMLElementTagNameMap[TAG] & { d: string }>(
+): <
+	TAG extends keyof MathMLElementTagNameMap & string,
+	EL extends ( TAG extends keyof MathMLElementTagNameMap ? MathMLElementTagNameMap[TAG] : MathMLElement ),
+>(
 	tag_name: TAG,
-	attrs?: string | Partial<{ [key in KEYS]: MathMLElementTagNameMap[TAG][key] | string | number | boolean }>,
-	...addons: ddeElementAddon<MathMLElementTagNameMap[TAG]>[]
+	attrs?: string | textContent | Partial<{ [key in keyof EL]: EL[key] | Observable<EL[key], any> | string | number | boolean }>,
+	...addons: ddeElementAddon<EL>[]
 )=> ddeMathMLElement
 export function elNS(
 	namespace: string
 ): (
 	tag_name: string,
-	attrs?: string | Record<string, any>,
+	attrs?: string | textContent | Record<string, any>,
 	...addons: ddeElementAddon<SupportedElement>[]
 )=> SupportedElement
 export { elNS as createElementNS }
diff --git a/dist/esm.js b/dist/esm.js
index f2cd11e..882b11e 100644
--- a/dist/esm.js
+++ b/dist/esm.js
@@ -1 +1 @@
-var v={isObservable(t){return!1},processReactiveAttribute(t,e,n,c){return n}};function q(t,e=!0){return e?Object.assign(v,t):(Object.setPrototypeOf(t,v),t)}function x(t){return v.isPrototypeOf(t)&&t!==v?t:v}function g(t){return typeof t>"u"}function A(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}var S={setDeleteAttr:F,ssr:""};function F(t,e,n){if(Reflect.set(t,e,n),!!g(n)){if(Reflect.deleteProperty(t,e),t instanceof HTMLElement&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var b=[{scope:document.body,host:t=>t?t(document.body):document.body,custom_element:!1,prevent:!0}],E={get current(){return b[b.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...b]},push(t={}){return b.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return b.push(b[0])},pop(){if(b.length!==1)return b.pop()}};function L(...t){return this.appendOriginal(...t),this}function U(t){return t.append===L||(t.appendOriginal=t.append,t.append=L),t}var O;function C(t,e,...n){let c=x(this),o=0,r,f;switch((Object(e)!==e||c.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,E.push({scope:t,host:(...l)=>l.length?(o===1?n.unshift(...l):l.forEach(h=>h(f)),void 0):f}),r=t(e||void 0);let d=r instanceof DocumentFragment;if(r.nodeName==="#comment")break;let a=C.mark({type:"component",name:t.name,host:d?"this":"parentElement"});r.prepend(a),d&&(f=a);break}case t==="#text":r=w.call(this,document.createTextNode(""),e);break;case(t==="<>"||!t):r=w.call(this,document.createDocumentFragment(),e);break;case!!O:r=w.call(this,document.createElementNS(O,t),e);break;case!r:r=w.call(this,document.createElement(t),e)}return U(r),f||(f=r),n.forEach(d=>d(f)),o&&E.pop(),o=2,r}function tt(t){let e=Symbol.for("default"),n=Array.from(t.querySelectorAll("slot")).reduce((o,r)=>Reflect.set(o,r.name||e,r)&&o,{}),c=Reflect.has(n,e);return t.append=new Proxy(t.append,{apply(o,r,f){if(!f.length)return t;let d=document.createDocumentFragment();for(let a of f){if(!a||!a.slot){c&&d.appendChild(a);continue}let l=a.slot,h=n[l];B(a,"remove","slot"),h&&(h.replaceWith(a),Reflect.deleteProperty(n,l))}return c&&(n[e].replaceWith(d),Reflect.deleteProperty(n,e)),Object.values(n).forEach(a=>a.replaceWith(C().append(...Array.from(a.childNodes)))),t}}),t}C.mark=function(t,e=!1){t=Object.entries(t).map(([o,r])=>o+`="${r}"`).join(" ");let n=e?"":"/",c=document.createComment(`<dde:mark ${t}${S.ssr}${n}>`);return e||(c.end=document.createComment("</dde:mark>")),c};function et(t){let e=this;return function(...c){O=t;let o=C.call(e,...c);return O=void 0,o}}var{setDeleteAttr:j}=S,y=new WeakMap;function w(t,...e){if(!e.length)return t;y.set(t,M(t,this));for(let[n,c]of Object.entries(Object.assign({},...e)))W.call(this,t,n,c);return y.delete(t),t}function W(t,e,n){let{setRemoveAttr:c,s:o}=M(t,this),r=this;n=o.processReactiveAttribute(t,e,n,(d,a)=>W.call(r,t,d,a));let[f]=e;if(f==="=")return c(e.slice(1),n);if(f===".")return P(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 j(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return N(o,n,P.bind(null,t[e]));case"ariaset":return N(o,n,(d,a)=>c("aria-"+d,a));case"classList":return z.call(r,t,n)}return k(t,e)?j(t,e,n):c(e,n)}function M(t,e){if(y.has(t))return y.get(t);let c=(t instanceof SVGElement?I:H).bind(null,t,"Attribute"),o=x(e);return{setRemoveAttr:c,s:o}}function z(t,e){let n=x(this);return N(n,e,(c,o)=>t.classList.toggle(c,o===-1?void 0:!!o)),t}function nt(t){return Array.from(t.children).forEach(e=>e.remove()),t}function B(t,e,n,c){return t instanceof HTMLElement?t[e+"Attribute"](n,c):t[e+"AttributeNS"](null,n,c)}function k(t,e){if(!Reflect.has(t,e))return!1;let n=T(t,e);return!g(n.set)}function T(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||T(t,e)}function N(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,r]){o&&(r=t.processReactiveAttribute(e,o,r,n),n(o,r))})}function $(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function H(t,e,n,c){return t[(g(c)?"remove":"set")+e](n,$(c))}function I(t,e,n,c,o=null){return t[(g(c)?"remove":"set")+e+"NS"](o,n,$(c))}function P(t,e,n){if(Reflect.set(t,e,n),!!g(n))return Reflect.deleteProperty(t,e)}function ct(t,e,n){return e||(e={}),function(o,...r){n&&(r.unshift(o),o=typeof n=="function"?n():n);let f=r.length?new CustomEvent(t,Object.assign({detail:r[0]},e)):new Event(t,e);return o.dispatchEvent(f)}}function _(t,e,n){return function(o){return o.addEventListener(t,e,n),o}}var R=G(),Z=new WeakSet;_.connected=function(t,e){let{custom_element:n}=E.current,c="connected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let f="dde:"+c;return r.addEventListener(f,t,e),r.__dde_lifecycleToEvents?r:r.isConnected?(r.dispatchEvent(new Event(f)),r):(A(e.signal,()=>R.offConnected(r,t))&&R.onConnected(r,t),r)}};_.disconnected=function(t,e){let{custom_element:n}=E.current,c="disconnected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let f="dde:"+c;return r.addEventListener(f,t,e),r.__dde_lifecycleToEvents||A(e.signal,()=>R.offDisconnected(r,t))&&R.onDisconnected(r,t),r}};var D=new WeakMap;_.disconnectedAsAbort=function(t){if(D.has(t))return D.get(t);let e=new AbortController;return D.set(t,e),t(_.disconnected(()=>e.abort())),e};_.attributeChanged=function(t,e){let n="attributeChanged";return typeof e!="object"&&(e={}),function(o){let r="dde:"+n;if(o.addEventListener(r,t,e),o.__dde_lifecycleToEvents||Z.has(o))return o;let f=new MutationObserver(function(a){for(let{attributeName:l,target:h}of a)h.dispatchEvent(new CustomEvent(r,{detail:[l,h.getAttribute(l)]}))});return A(e.signal,()=>f.disconnect())&&f.observe(o,{attributes:!0}),o}};function G(){let t=new Map,e=!1,n=new MutationObserver(function(s){for(let i of s)if(i.type==="childList"){if(l(i.addedNodes,!0)){f();continue}h(i.removedNodes,!0)&&f()}});return{onConnected(s,i){r();let u=o(s);u.connected.has(i)||(u.connected.add(i),u.length_c+=1)},offConnected(s,i){if(!t.has(s))return;let u=t.get(s);u.connected.has(i)&&(u.connected.delete(i),u.length_c-=1,c(s,u))},onDisconnected(s,i){r();let u=o(s);u.disconnected.has(i)||(u.disconnected.add(i),u.length_d+=1)},offDisconnected(s,i){if(!t.has(s))return;let u=t.get(s);u.disconnected.has(i)&&(u.disconnected.delete(i),u.length_d-=1,c(s,u))}};function c(s,i){i.length_c||i.length_d||(t.delete(s),f())}function o(s){if(t.has(s))return t.get(s);let i={connected:new WeakSet,length_c:0,disconnected:new WeakSet,length_d:0};return t.set(s,i),i}function r(){e||(e=!0,n.observe(document.body,{childList:!0,subtree:!0}))}function f(){!e||t.size||(e=!1,n.disconnect())}function d(){return new Promise(function(s){(requestIdleCallback||requestAnimationFrame)(s)})}async function a(s){t.size>30&&await d();let i=[];if(!(s instanceof Node))return i;for(let u of t.keys())u===s||!(u instanceof Node)||s.contains(u)&&i.push(u);return i}function l(s,i){let u=!1;for(let p of s){if(i&&a(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),u=!0)}return u}function h(s,i){let u=!1;for(let p of s)i&&a(p).then(h),!(!t.has(p)||!t.get(p).length_d)&&(p.dispatchEvent(new Event("dde:disconnected")),t.delete(p),u=!0);return u}}export{w as assign,W as assignAttribute,U as chainableAppend,z as classListDeclarative,C as createElement,et as createElementNS,ct as dispatchEvent,C as el,et as elNS,B as elementAttribute,nt as empty,_ as on,q as registerReactivity,E as scope,tt as simulateSlots};
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e=this;return function(...c){A=t;let o=N.call(e,...c);return A=void 0,o}}var{setDeleteAttr:P}=R,C=new WeakMap;function x(t,...e){if(!e.length)return t;C.set(t,T(t,this));for(let[n,c]of Object.entries(Object.assign({},...e)))j.call(this,t,n,c);return C.delete(t),t}function j(t,e,n){let{setRemoveAttr:c,s:o}=T(t,this),r=this;n=o.processReactiveAttribute(t,e,n,(a,d)=>j.call(r,t,a,d));let[s]=e;if(s==="=")return c(e.slice(1),n);if(s===".")return W(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 P(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return S(o,n,W.bind(null,t[e]));case"ariaset":return S(o,n,(a,d)=>c("aria-"+a,d));case"classList":return B.call(r,t,n)}return I(t,e)?P(t,e,n):c(e,n)}function T(t,e){if(C.has(t))return C.get(t);let c=(t instanceof SVGElement?G:Z).bind(null,t,"Attribute"),o=y(e);return{setRemoveAttr:c,s:o}}function B(t,e){let n=y(this);return S(n,e,(c,o)=>t.classList.toggle(c,o===-1?void 0:!!o)),t}function ot(t){return Array.from(t.children).forEach(e=>e.remove()),t}function H(t,e,n,c){return t instanceof HTMLElement?t[e+"Attribute"](n,c):t[e+"AttributeNS"](null,n,c)}function I(t,e){if(!Reflect.has(t,e))return!1;let n=M(t,e);return!v(n.set)}function M(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||M(t,e)}function S(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,r]){o&&(r=t.processReactiveAttribute(e,o,r,n),n(o,r))})}function $(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function Z(t,e,n,c){return t[(v(c)?"remove":"set")+e](n,$(c))}function G(t,e,n,c,o=null){return t[(v(c)?"remove":"set")+e+"NS"](o,n,$(c))}function W(t,e,n){if(Reflect.set(t,e,n),!!v(n))return Reflect.deleteProperty(t,e)}function ut(t,e,n=t){g.push({scope:t,host:(...o)=>o.length?o.forEach(r=>r(t)):t,custom_element:t});let c=e.call(t,n);return g.pop(),c}function ft(t){for(let n of["connected","disconnected"])k(t.prototype,n+"Callback",function(c,o,r){c.apply(o,r),o.dispatchEvent(new Event("dde:"+n))});let e="attributeChanged";return k(t.prototype,e+"Callback",function(n,c,o){let[r,,s]=o;c.dispatchEvent(new CustomEvent("dde:"+e,{detail:[r,s]})),n.apply(c,o)}),t.prototype.__dde_lifecycleToEvents=!0,t}function k(t,e,n){t[e]=new Proxy(t[e]||(()=>{}),{apply:n})}function dt(t,e,n){return e||(e={}),function(o,...r){n&&(r.unshift(o),o=typeof n=="function"?n():n);let s=r.length?new CustomEvent(t,Object.assign({detail:r[0]},e)):new Event(t,e);return o.dispatchEvent(s)}}function _(t,e,n){return function(o){return o.addEventListener(t,e,n),o}}var O=J(),V=new WeakSet;_.connected=function(t,e){let{custom_element:n}=g.current,c="connected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let s="dde:"+c;return r.addEventListener(s,t,e),r.__dde_lifecycleToEvents?r:r.isConnected?(r.dispatchEvent(new Event(s)),r):(w(e.signal,()=>O.offConnected(r,t))&&O.onConnected(r,t),r)}};_.disconnected=function(t,e){let{custom_element:n}=g.current,c="disconnected";return typeof e!="object"&&(e={}),e.once=!0,function(r){n&&(r=n);let s="dde:"+c;return r.addEventListener(s,t,e),r.__dde_lifecycleToEvents||w(e.signal,()=>O.offDisconnected(r,t))&&O.onDisconnected(r,t),r}};var D=new WeakMap;_.disconnectedAsAbort=function(t){if(D.has(t))return D.get(t);let e=new AbortController;return D.set(t,e),t(_.disconnected(()=>e.abort())),e};_.attributeChanged=function(t,e){let n="attributeChanged";return typeof e!="object"&&(e={}),function(o){let r="dde:"+n;if(o.addEventListener(r,t,e),o.__dde_lifecycleToEvents||V.has(o))return o;let s=new MutationObserver(function(d){for(let{attributeName:l,target:p}of d)p.dispatchEvent(new CustomEvent(r,{detail:[l,p.getAttribute(l)]}))});return w(e.signal,()=>s.disconnect())&&s.observe(o,{attributes:!0}),o}};function J(){let t=new Map,e=!1,n=new MutationObserver(function(i){for(let u of i)if(u.type==="childList"){if(l(u.addedNodes,!0)){s();continue}p(u.removedNodes,!0)&&s()}});return{onConnected(i,u){r();let f=o(i);f.connected.has(u)||(f.connected.add(u),f.length_c+=1)},offConnected(i,u){if(!t.has(i))return;let f=t.get(i);f.connected.has(u)&&(f.connected.delete(u),f.length_c-=1,c(i,f))},onDisconnected(i,u){r();let f=o(i);f.disconnected.has(u)||(f.disconnected.add(u),f.length_d+=1)},offDisconnected(i,u){if(!t.has(i))return;let f=t.get(i);f.disconnected.has(u)&&(f.disconnected.delete(u),f.length_d-=1,c(i,f))}};function c(i,u){u.length_c||u.length_d||(t.delete(i),s())}function o(i){if(t.has(i))return t.get(i);let u={connected:new WeakSet,length_c:0,disconnected:new WeakSet,length_d:0};return t.set(i,u),u}function r(){e||(e=!0,n.observe(document.body,{childList:!0,subtree:!0}))}function s(){!e||t.size||(e=!1,n.disconnect())}function a(){return new Promise(function(i){(requestIdleCallback||requestAnimationFrame)(i)})}async function d(i){t.size>30&&await a();let u=[];if(!(i instanceof Node))return u;for(let f of t.keys())f===i||!(f instanceof Node)||i.contains(f)&&u.push(f);return u}function l(i,u){let f=!1;for(let h of i){if(u&&d(h).then(l),!t.has(h))continue;let E=t.get(h);E.length_c&&(h.dispatchEvent(new Event("dde:connected")),E.connected=new WeakSet,E.length_c=0,E.length_d||t.delete(h),f=!0)}return f}function p(i,u){let f=!1;for(let h of i)u&&d(h).then(p),!(!t.has(h)||!t.get(h).length_d)&&(h.dispatchEvent(new Event("dde:disconnected")),t.delete(h),f=!0);return f}}export{x as assign,j as assignAttribute,U as chainableAppend,B as classListDeclarative,N as createElement,rt as createElementNS,ut as customElementRender,ft as customElementWithDDE,dt as dispatchEvent,N as el,rt as elNS,H as elementAttribute,ot as empty,ft as lifecycleToEvents,_ as on,q as registerReactivity,g as scope,nt as simulateSlots};
diff --git a/examples/components/fullNameComponent.js b/examples/components/fullNameComponent.js
index ecbcfc2..479b65a 100644
--- a/examples/components/fullNameComponent.js
+++ b/examples/components/fullNameComponent.js
@@ -31,7 +31,7 @@ export function fullNameComponent(){
 		),
 		elSVG("svg", { viewBox: "0 0 240 80", style: { height: "80px", display: "block" } }).append(
 			//elSVG("style", {  })
-			elSVG("text", { x: 20, y: 35, textContent: "Text" })
+			elSVG("text", { x: 20, y: 35, textContent: "Text" }),
 		)
 	);
 }
diff --git a/examples/components/webComponent.js b/examples/components/webComponent.js
index 36a0163..00d2b8f 100644
--- a/examples/components/webComponent.js
+++ b/examples/components/webComponent.js
@@ -1,4 +1,4 @@
-import { el, on, scope } from "../../index.js";
+import { el, on, customElementRender, customElementWithDDE, scope, simulateSlots } from "../../index.js";
 import { O } from "../../observables.js";
 
 /**
@@ -42,35 +42,24 @@ export class CustomHTMLTestElement extends HTMLElement{
 	get preName(){ return this.getAttribute("pre-name"); }
 	set preName(value){ this.setAttribute("pre-name", value); }
 }
-// https://gist.github.com/WebReflection/ec9f6687842aa385477c4afca625bbf4
-lifecycleToEvents(CustomHTMLTestElement)
+customElementWithDDE(CustomHTMLTestElement);
 customElements.define(CustomHTMLTestElement.tagName, CustomHTMLTestElement);
 
-function customElementRender(_this, render, props= _this){
-	console.log(_this.shadowRoot, _this.childList);
-	scope.push({ scope: _this, host: (...c)=> c.length ? c.forEach(c=> c(_this)) : _this, custom_element: _this });
-	if(typeof props==="function") props= props(_this);
-	const out= render(props);
-	scope.pop();
-	return out;
-}
-function lifecycleToEvents(class_declaration){
-	for (const name of [ "connected", "disconnected" ])
-		wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
-			target.apply(thisArg, detail);
-			thisArg.dispatchEvent(new Event("dde:"+name));
-		});
-	const name= "attributeChanged";
-	wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
-		const [ attribute, , value ]= detail;
-		thisArg.dispatchEvent(new CustomEvent("dde:"+name, {
-			detail: [ attribute, value ]
-		}));
-		target.apply(thisArg, detail);
-	});
-	class_declaration.prototype.__dde_lifecycleToEvents= true;
-	return class_declaration;
-}
-function wrapMethod(obj, method, apply){
-	obj[method]= new Proxy(obj[method] || (()=> {}), { apply });
+export class CustomSlottingHTMLElement extends HTMLElement{
+	static tagName= "custom-slotting";
+	render(){
+		return simulateSlots(this, el().append(
+			el("p").append(
+				"Ahoj ", el("slot", { name: "name", className: "name", textContent: "World" })
+			),
+			el("p").append(
+				"BTW ", el("slot")
+			)
+		));
+	}
+	connectedCallback(){
+		this.append(customElementRender(this, this.render));
+	}
 }
+customElementWithDDE(CustomSlottingHTMLElement);
+customElements.define(CustomSlottingHTMLElement.tagName, CustomSlottingHTMLElement);
diff --git a/examples/index.js b/examples/index.js
index d80905c..1d0d24a 100644
--- a/examples/index.js
+++ b/examples/index.js
@@ -2,7 +2,7 @@ import { style, el } from './exports.js';
 document.head.append(style.element);
 import { fullNameComponent } from './components/fullNameComponent.js';
 import { todosComponent } from './components/todosComponent.js';
-import { CustomHTMLTestElement } from "./components/webComponent.js";
+import { CustomHTMLTestElement, CustomSlottingHTMLElement } from "./components/webComponent.js";
 import { thirdParty } from "./components/3rd-party.js";
 
 document.body.append(
@@ -10,5 +10,9 @@ document.body.append(
 	el(fullNameComponent),
 	el(todosComponent),
 	el(CustomHTMLTestElement.tagName, { name: "attr" }),
-	el(thirdParty)
+	el(thirdParty),
+	el(CustomSlottingHTMLElement.tagName).append(
+		el("strong", { slot: "name", textContent: "Honzo" }),
+		el("span", "…default slot")
+	)
 );
diff --git a/index.d.ts b/index.d.ts
index b152d18..a106eff 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -68,7 +68,7 @@ export function el<
 	component: C,
 	attrs?: Parameters<C>[0] | textContent,
 	...addons: ddeElementAddon<ReturnType<C>>[]
-): ReturnType<C> extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? ReturnType<C> : ddeHTMLElement
+): ReturnType<C> extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? ReturnType<C> : ( ReturnType<C> extends ddeDocumentFragment ? ReturnType<C> : ddeHTMLElement )
 export { el as createElement }
 
 export function elNS(
diff --git a/index.js b/index.js
index 0ba4366..74ce727 100644
--- a/index.js
+++ b/index.js
@@ -1,2 +1,3 @@
 export * from "./src/dom.js";
+export * from "./src/customElement.js";
 export * from "./src/events.js";
diff --git a/package.json b/package.json
index eb8f32a..0f285ee 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "deka-dom-el",
-	"version": "0.7.3",
+	"version": "0.7.5",
 	"description": "A low-code library that simplifies the creation of native DOM elements/components using small wrappers and tweaks.",
 	"author": "Jan Andrle <andrle.jan@centrum.cz>",
 	"license": "MIT",
@@ -58,7 +58,7 @@
 	"size-limit": [
 		{
 			"path": "./index.js",
-			"limit": "9 kB",
+			"limit": "9.75 kB",
 			"gzip": false,
 			"brotli": false
 
@@ -71,19 +71,7 @@
 
 		},
 		{
-			"path": "./jsdom.js",
-			"limit": "10 kB",
-			"gzip": false,
-			"brotli": false
-		},
-		{
-			"path": "./examples/components/webComponent.js",
-			"limit": "13 kB",
-			"gzip": false,
-			"brotli": false
-		},
-		{
-			"path": "./examples/components/webComponent.js",
+			"path": "./index-with-observables.js",
 			"limit": "5 kB"
 		}
 	],
diff --git a/src/customElement.js b/src/customElement.js
new file mode 100644
index 0000000..e0c117b
--- /dev/null
+++ b/src/customElement.js
@@ -0,0 +1,33 @@
+import { scope } from "./dom.js";
+export function customElementRender(custom_element, render, props= custom_element){
+	scope.push({
+		scope: custom_element,
+		host: (...c)=> c.length ? c.forEach(c=> c(custom_element)) : custom_element,
+		custom_element
+	});
+	const out= render.call(custom_element, props);
+	scope.pop();
+	return out;
+}
+export function lifecycleToEvents(class_declaration){
+	for (const name of [ "connected", "disconnected" ])
+		wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
+			target.apply(thisArg, detail);
+			thisArg.dispatchEvent(new Event("dde:"+name));
+		});
+	const name= "attributeChanged";
+	wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
+		const [ attribute, , value ]= detail;
+		thisArg.dispatchEvent(new CustomEvent("dde:"+name, {
+			detail: [ attribute, value ]
+		}));
+		target.apply(thisArg, detail);
+	});
+	class_declaration.prototype.__dde_lifecycleToEvents= true;
+	return class_declaration;
+}
+// https://gist.github.com/WebReflection/ec9f6687842aa385477c4afca625bbf4
+export { lifecycleToEvents as customElementWithDDE };
+function wrapMethod(obj, method, apply){
+	obj[method]= new Proxy(obj[method] || (()=> {}), { apply });
+}
diff --git a/src/dom.js b/src/dom.js
index 2048dac..9682d7b 100644
--- a/src/dom.js
+++ b/src/dom.js
@@ -66,14 +66,14 @@ export function createElement(tag, attributes, ...addons){
 	scoped= 2;
 	return el;
 }
-/** @param {HTMLElement} element */
-export function simulateSlots(element){
+/** @param {HTMLElement} element @param {HTMLElement} [root] */
+export function simulateSlots(element, root= element, mapper= undefined){
 	const _default= Symbol.for("default");
-	const slots= Array.from(element.querySelectorAll("slot"))
+	const slots= Array.from(root.querySelectorAll("slot"))
 		.reduce((out, curr)=> Reflect.set(out, curr.name || _default, curr) && out, {});
 	const has_d= Reflect.has(slots, _default);
 	element.append= new Proxy(element.append, {
-		apply(_1, _2, els){
+		apply(orig, _, els){
 			if(!els.length) return element;
 
 			const d= document.createDocumentFragment();
@@ -83,19 +83,28 @@ export function simulateSlots(element){
 				const slot= slots[name];
 				elementAttribute(el, "remove", "slot");
 				if(!slot) continue;
-				slot.replaceWith(el);
+				simulateSlotReplace(slot, el, mapper);
 				Reflect.deleteProperty(slots, name);
 			}
 			if(has_d){
 				slots[_default].replaceWith(d);
 				Reflect.deleteProperty(slots, _default);
 			}
-			Object.values(slots)
-				.forEach(slot=> slot.replaceWith(createElement().append(...Array.from(slot.childNodes))));
+			element.append= orig; //TODO: better memory management, but non-native behavior!
 			return element;
 		}
 	});
-	return element;
+	if(element!==root){
+		const els= Array.from(element.childNodes);
+		els.forEach(el=> el.remove());
+		element.append(...els);
+	}
+	return root;
+}
+function simulateSlotReplace(slot, element, mapper){
+	if(mapper) mapper(slot, element);
+	try{ slot.replaceWith(assign(element, { className: [ element.className, slot.className ], dataset: { ...slot.dataset } })); }
+	catch(_){ slot.replaceWith(element); }
 }
 /**
  * @param { { type: "component", name: string, host: "this" | "parentElement" } | { type: "reactive" | "later" } } attrs