Pre dev-memo (#17)

* 🎉

* ➖ no good direction

how to clean up not used in text re-rendering ⇒ needs to be more inside of `O.el`

* 🐛 🔨 `O.el`

* 🚀 implementing #16

* 💥 `on.(dis)connected` only once

dist/dde-with-observables.js

@@ -1,31 +1,31 @@
 //deka-dom-el library is available via global namespace `dde`
 (()=> {
-var O={isObservable(t){return!1},processReactiveAttribute(t,e,n,r){return n}};function F(t,e=!0){return e?Object.assign(O,t):(Object.setPrototypeOf(t,O),t)}function S(t){return O.isPrototypeOf(t)&&t!==O?t:O}function _(t){return typeof t>"u"}function B(t){let e=typeof t;return e!=="object"?e:t===null?"null":Object.prototype.toString.call(t)}function D(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}function N(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(r,o){return Reflect.set(r,ct(o),e(t,o)),r},{})}function ct(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var d={setDeleteAttr:st,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function st(t,e,n){if(Reflect.set(t,e,n),!!_(n)){if(Reflect.deleteProperty(t,e),t instanceof d.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var y=[{get scope(){return d.D.body},host:t=>t?t(d.D.body):d.D.body,custom_element:!1,prevent:!0}],v={get current(){return y[y.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...y]},push(t={}){return y.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return y.push(y[0])},pop(){if(y.length!==1)return y.pop()}};function I(...t){return this.appendOriginal(...t),this}function it(t){return t.append===I||(t.appendOriginal=t.append,t.append=I),t}var P;function R(t,e,...n){let r=S(this),o=0,c,s;switch((Object(e)!==e||r.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,v.push({scope:t,host:(...h)=>h.length?(o===1?n.unshift(...h):h.forEach(g=>g(s)),void 0):s}),c=t(e||void 0);let u=c instanceof d.F;if(c.nodeName==="#comment")break;let l=R.mark({type:"component",name:t.name,host:u?"this":"parentElement"});c.prepend(l),u&&(s=l);break}case t==="#text":c=w.call(this,d.D.createTextNode(""),e);break;case(t==="<>"||!t):c=w.call(this,d.D.createDocumentFragment(),e);break;case!!P:c=w.call(this,d.D.createElementNS(P,t),e);break;case!c:c=w.call(this,d.D.createElement(t),e)}return it(c),s||(s=c),n.forEach(u=>u(s)),o&&v.pop(),o=2,c}function Ct(t,e=t,n=void 0){let r=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((s,u)=>Reflect.set(s,u.name||r,u)&&s,{}),c=Reflect.has(o,r);if(t.append=new Proxy(t.append,{apply(s,u,l){if(!l.length)return t;let h=d.D.createDocumentFragment();for(let g of l){if(!g||!g.slot){c&&h.appendChild(g);continue}let i=g.slot,f=o[i];at(g,"remove","slot"),f&&(ft(f,g,n),Reflect.deleteProperty(o,i))}return c&&(o[r].replaceWith(h),Reflect.deleteProperty(o,r)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(u=>u.remove()),t.append(...s)}return e}function ft(t,e,n){n&&n(t,e);try{t.replaceWith(w(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}R.mark=function(t,e=!1){t=Object.entries(t).map(([o,c])=>o+`="${c}"`).join(" ");let n=e?"":"/",r=d.D.createComment(`<dde:mark ${t}${d.ssr}${n}>`);return e&&(r.end=d.D.createComment("</dde:mark>")),r};function St(t){let e=this;return function(...r){P=t;let o=R.call(e,...r);return P=void 0,o}}var j=new WeakMap,{setDeleteAttr:J}=d;function w(t,...e){if(!e.length)return t;j.set(t,V(t,this));for(let[n,r]of Object.entries(Object.assign({},...e)))G.call(this,t,n,r);return j.delete(t),t}function G(t,e,n){let{setRemoveAttr:r,s:o}=V(t,this),c=this;n=o.processReactiveAttribute(t,e,n,(u,l)=>G.call(c,t,u,l));let[s]=e;if(s==="=")return r(e.slice(1),n);if(s===".")return Z(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return r(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 $(o,n,Z.bind(null,t[e]));case"ariaset":return $(o,n,(u,l)=>r("aria-"+u,l));case"classList":return ut.call(c,t,n)}return dt(t,e)?J(t,e,n):r(e,n)}function V(t,e){if(j.has(t))return j.get(t);let r=(t instanceof d.S?pt:lt).bind(null,t,"Attribute"),o=S(e);return{setRemoveAttr:r,s:o}}function ut(t,e){let n=S(this);return $(n,e,(r,o)=>t.classList.toggle(r,o===-1?void 0:!!o)),t}function Dt(t){return Array.from(t.children).forEach(e=>e.remove()),t}function at(t,e,n,r){return t instanceof d.H?t[e+"Attribute"](n,r):t[e+"AttributeNS"](null,n,r)}function dt(t,e){if(!Reflect.has(t,e))return!1;let n=K(t,e);return!_(n.set)}function K(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||K(t,e)}function $(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,c]){o&&(c=t.processReactiveAttribute(e,o,c,n),n(o,c))})}function Q(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function lt(t,e,n,r){return t[(_(r)?"rLine truncated
-	* Investigate `__dde_attributes` key of the element.*/let[c,s]=o,u=this[U][c];if(u)return E.action(u,"_set",s)})(t),x.disconnected(function(){/*! This removes all observables mapped to attributes (`O.observedAttributes`).
-	* Investigate `__dde_attributes` key of the element.*/E.clear(...Object.values(this[U]))})(t),n};var et={isObservable:T,processReactiveAttribute(t,e,n,r){if(!T(n))return n;let o=c=>r(e,c);return H(n,o),nt(n,o,t,e),n()}};function nt(t,e,...n){let{current:r}=v;r.prevent||r.host(function(o){o[L]||(o[L]=[],x.disconnected(()=>o[L].forEach(([[c,s]])=>C(c,s,c[b]?.host()===o)))(o)),o[L].push([[t,e],...n])})}function Y(t,e,n){let r=t?()=>tt(r):(...o)=>o.length?ot(r,...o):tt(r);return rt(r,e,n)}var Et=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),q=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 rt(t,e,n){let r=[];B(n)!=="[object Object]"&&(n={});let{onclear:o}=E.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=v;return Reflect.defineProperty(t,b,{value:{value:e,actions:n,onclear:r,host:c,listeners:new Set,defined:new q},enumerable:!1,writable:!1,configurable:!0}),t.toJSON=()=>t(),Object.setPrototypeOf(t[b],Et),t}function xt(){return W[W.length-1]}function tt(t){if(!t[b])return;let{value:e,listeners:n}=t[b],r=xt();return r&&n.add(r),m.has(r)&&m.get(r).add(t),e}function ot(t,e,n){if(!t[b])return;let r=t[b];if(!(!n&&r.value===e))return r.value=e,r.listeners.forEach(o=>o(e)),e}function H(t,e){if(t[b])return t[b].listeners.add(e)}function C(t,e,n){let r=t[b];if(!r)return;let o=r.listeners.delete(e);if(n&&!r.listeners.size){if(E.clear(t),!m.has(r))return o;let c=m.get(r);if(!m.has(c))return o;m.get(c).forEach(s=>C(s,c,!0))}return o}F(et);
-globalThis.dde= {O: E,
-assign: w,
-assignAttribute: G,
-chainableAppend: it,
-classListDeclarative: ut,
-createElement: R,
-createElementNS: St,
-customElementRender: kt,
-customElementWithDDE: Lt,
-dispatchEvent: Ft,
-el: R,
-elNS: St,
-elementAttribute: at,
-empty: Dt,
-isObservable: T,
-lifecycleToEvents: Lt,
-observable: E,
-observedAttributes: ht,
+var R={isObservable(t){return!1},processReactiveAttribute(t,e,n,r){return n}};function F(t,e=!0){return e?Object.assign(R,t):(Object.setPrototypeOf(t,R),t)}function N(t){return R.isPrototypeOf(t)&&t!==R?t:R}function A(t){return typeof t>"u"}function J(t){let e=typeof t;return e!=="object"?e:t===null?"null":Object.prototype.toString.call(t)}function P(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}function L(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(r,o){return Reflect.set(r,st(o),e(t,o)),r},{})}function st(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var d={setDeleteAttr:it,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function it(t,e,n){if(Reflect.set(t,e,n),!!A(n)){if(Reflect.deleteProperty(t,e),t instanceof d.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var _="__dde_lifecycleToEvents";var y=[{get scope(){return d.D.body},host:t=>t?t(d.D.body):d.D.body,custom_element:!1,prevent:!0}],v={get current(){return y[y.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...y]},push(t={}){return y.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return y.push(y[0])},pop(){if(y.length!==1)return y.pop()}};function Z(...t){return this.appendOriginal(...t),this}function ut(t){return t.append===Z||(t.appendOriginal=t.append,t.append=Z),t}var T;function D(t,e,...n){let r=N(this),o=0,c,s;switch((Object(e)!==e||r.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,v.push({scope:t,host:(...p)=>p.length?(o===1?n.unshift(...p):p.forEach(b=>b(s)),void 0):s}),c=t(e||void 0);let a=c instanceof d.F;if(c.nodeName==="#comment")break;let l=D.mark({type:"component",name:t.name,host:a?"this":"parentElement"});c.prepend(l),a&&(s=l);break}case t==="#text":c=S.call(this,d.D.createTextNode(""),e);break;case(t==="<>"||!t):c=S.call(this,d.D.createDocumentFragment(),e);break;case!!T:c=S.call(this,d.D.createElementNS(T,t),e);break;case!c:c=S.call(this,d.D.createElement(t),e)}return ut(c),s||(s=c),n.forEach(a=>a(s)),o&&v.pop(),o=2,c}function Dt(t,e=t,n=void 0){let r=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((s,a)=>Reflect.set(s,a.name||r,a)&&s,{}),c=Reflect.has(o,r);if(t.append=new Proxy(t.append,{apply(s,a,l){if(!l.length)return t;let p=d.D.createDocumentFragment();for(let b of l){if(!b||!b.slot){c&&p.appendChild(b);continue}let k=b.slot,i=o[k];dt(b,"remove","slot"),i&&(ft(i,b,n),Reflect.deleteProperty(o,k))}return c&&(o[r].replaceWith(p),Reflect.deleteProperty(o,r)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(a=>a.remove()),t.append(...s)}return e}function ft(t,e,n){n&&n(t,e);try{t.replaceWith(S(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}D.mark=function(t,e=!1){t=Object.entries(t).map(([o,c])=>o+`="${c}"`).join(" ");let n=e?"":"/",r=d.D.createComment(`<dde:mark ${t}${d.ssr}${n}>`);return e&&(r.end=d.D.createComment("</dde:mark>")),r};function kt(t){let e=this;return function(...r){T=t;let o=D.call(e,...r);return T=void 0,o}}var j=new WeakMap,{setDeleteAttr:G}=d;function S(t,...e){if(!e.length)return t;j.set(t,Q(t,this));for(let[n,r]of Object.entries(Object.assign({},...e)))K.call(this,t,n,r);return j.delete(t),t}function K(t,e,n){let{setRemoveAttr:r,s:o}=Q(t,this),c=this;n=o.processReactiveAttribute(t,e,n,(a,l)=>K.call(c,t,a,l));let[s]=e;if(s==="=")return r(e.slice(1),n);if(s===".")return V(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return r(e,n,"http://www.w3.org/1999/xlink");case"textContent":return G(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return $(o,n,V.bind(null,t[e]));case"ariaset":return $(o,n,(a,l)=>r("aria-"+a,l));case"classList":return at.call(c,t,n)}return lt(t,e)?G(t,e,n):r(e,n)}function Q(t,e){if(j.has(t))return j.get(t);let r=(t instanceof d.S?ht:pt).bind(null,t,"Attribute"),o=N(e);return{setRemoveAttr:r,s:o}}function at(t,e){let n=N(this);return $(n,e,(r,o)=>t.classList.toggle(r,o===-1?void 0:!!o)),t}function Nt(t){return Array.from(t.children).forEach(e=>e.remove()),t}function dt(t,e,n,r){return t instanceof d.H?t[e+"Attribute"](n,r):t[e+"AttributeNS"](null,n,r)}function lt(t,e){if(!Reflect.has(t,e))return!1;let n=X(t,e);return!A(n.set)}function X(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||X(t,e)}function $(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,c]){o&&(c=t.processReactiveAttribute(e,o,c,n),n(o,c))})}function Y(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}functiLine truncated
+	* Investigate `__dde_attributes` key of the element.*/let[c,s]=o,a=this[H][c];if(a)return m.action(a,"_set",s)})(t),x.disconnected(function(){/*! This removes all observables mapped to attributes (`O.observedAttributes`).
+	* Investigate `__dde_attributes` key of the element.*/m.clear(...Object.values(this[H]))})(t),n};var nt={isObservable:W,processReactiveAttribute(t,e,n,r){if(!W(n))return n;let o=c=>{if(!t.isConnected)return w(n,o);r(e,c)};return I(n,o),rt(n,o,t,e),n()}};function rt(t,e,...n){let{current:r}=v;r.prevent||r.host(function(o){o[O]||(o[O]=[],x.disconnected(()=>o[O].forEach(([[c,s]])=>w(c,s,c[h]?.host()===o)))(o)),o[O].push([[t,e],...n])})}function tt(t,e,n){let r=t?()=>et(r):(...o)=>o.length?ct(r,...o):et(r);return ot(r,e,n)}var yt=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),B=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=[];J(n)!=="[object Object]"&&(n={});let{onclear:o}=m.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=v;return Reflect.defineProperty(t,h,{value:{value:e,actions:n,onclear:r,host:c,listeners:new Set,defined:new B},enumerable:!1,writable:!1,configurable:!0}),t.toJSON=()=>t(),Object.setPrototypeOf(t[h],yt),t}function At(){return q[q.length-1]}function et(t){if(!t[h])return;let{value:e,listeners:n}=t[h],r=At();return r&&n.add(r),g.has(r)&&g.get(r).add(t),e}function ct(t,e,n){if(!t[h])return;let r=t[h];if(!(!n&&r.value===e))return r.value=e,r.listeners.forEach(o=>o(e)),e}function I(t,e){if(t[h])return t[h].listeners.add(e)}function w(t,e,n){let r=t[h];if(!r)return;let o=r.listeners.delete(e);if(n&&!r.listeners.size){if(m.clear(t),!g.has(r))return o;let c=g.get(r);if(!g.has(c))return o;g.get(c).forEach(s=>w(s,c,!0))}return o}F(nt);
+globalThis.dde= {O: m,
+assign: S,
+assignAttribute: K,
+chainableAppend: ut,
+classListDeclarative: at,
+createElement: D,
+createElementNS: kt,
+customElementRender: Mt,
+customElementWithDDE: Wt,
+dispatchEvent: Ut,
+el: D,
+elNS: kt,
+elementAttribute: dt,
+empty: Nt,
+isObservable: W,
+lifecycleToEvents: Wt,
+observable: m,
+observedAttributes: bt,
 on: x,
 registerReactivity: F,
 scope: v,
-simulateSlots: Ct
+simulateSlots: Dt
 };
 
 })();

dist/dde.js

@@ -1,25 +1,25 @@
 //deka-dom-el library is available via global namespace `dde`
 (()=> {
-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 _(t){return m.isPrototypeOf(t)&&t!==m?t:m}function E(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)}}function T(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(c,r){return Reflect.set(c,H(r),e(t,r)),c},{})}function H(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var a={setDeleteAttr:z,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function z(t,e,n){if(Reflect.set(t,e,n),!!E(n)){if(Reflect.deleteProperty(t,e),t instanceof a.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var g=[{get scope(){return a.D.body},host:t=>t?t(a.D.body):a.D.body,custom_element:!1,prevent:!0}],v={get current(){return g[g.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...g]},push(t={}){return g.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return g.push(g[0])},pop(){if(g.length!==1)return g.pop()}};function L(...t){return this.appendOriginal(...t),this}function B(t){return t.append===L||(t.appendOriginal=t.append,t.append=L),t}var C;function N(t,e,...n){let c=_(this),r=0,o,s;switch((Object(e)!==e||c.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{r=1,v.push({scope:t,host:(...b)=>b.length?(r===1?n.unshift(...b):b.forEach(h=>h(s)),void 0):s}),o=t(e||void 0);let d=o instanceof a.F;if(o.nodeName==="#comment")break;let l=N.mark({type:"component",name:t.name,host:d?"this":"parentElement"});o.prepend(l),d&&(s=l);break}case 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+var y={isObservable(t){return!1},processReactiveAttribute(t,e,n,r){return n}};function H(t,e=!0){return e?Object.assign(y,t):(Object.setPrototypeOf(t,y),t)}function D(t){return y.isPrototypeOf(t)&&t!==y?t:y}function E(t){return typeof t>"u"}function R(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}function M(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(r,o){return Reflect.set(r,z(o),e(t,o)),r},{})}function z(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var a={setDeleteAttr:B,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function B(t,e,n){if(Reflect.set(t,e,n),!!E(n)){if(Reflect.deleteProperty(t,e),t instanceof a.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var 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Object.entries(e).forEach(function([o,c]){o&&(c=t.processReactiveAttribute(e,o,c,n),n(o,c))})}function U(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function K(t,e,n,r){return t[(E(r)?"remove":"set")+e](n,U(r))}function Q(t,e,n,r,o=null){return t[(E(r)?"remove":"set")+e+"Line truncated
 globalThis.dde= {assign: A,
-assignAttribute: j,
-chainableAppend: B,
-classListDeclarative: Z,
-createElement: N,
-createElementNS: it,
-customElementRender: pt,
-customElementWithDDE: lt,
-dispatchEvent: vt,
-el: N,
-elNS: it,
-elementAttribute: G,
+assignAttribute: q,
+chainableAppend: I,
+classListDeclarative: G,
+createElement: L,
+createElementNS: ut,
+customElementRender: ht,
+customElementWithDDE: bt,
+dispatchEvent: xt,
+el: L,
+elNS: ut,
+elementAttribute: V,
 empty: ft,
-lifecycleToEvents: lt,
-observedAttributes: Q,
-on: y,
-registerReactivity: q,
+lifecycleToEvents: bt,
+observedAttributes: X,
+on: w,
+registerReactivity: H,
 scope: v,
-simulateSlots: st
+simulateSlots: it
 };
 
 })();

dist/esm-with-observables.d.ts

@@ -54,7 +54,7 @@ interface observable{
 	 * */
 	el<S extends any>(observable: Observable<S, any>, el: (v: S)=> Element | Element[] | DocumentFragment): DocumentFragment;
 
-    attribute(name: string, initial?: string): Observable<string, {}>;
+    observedAttributes(custom_element: HTMLElement): Record<string, Observable<any, any>>;
 }
 export const observable: observable;
 export const O: observable;
@@ -64,16 +64,11 @@ declare global {
 	type ddeActions<V>= Actions<V>
 }
 type CustomElementTagNameMap= { '#text': Text, '#comment': Comment }
-declare global {
-	interface ddePublicElementTagNameMap{
-	}
-}
 type SupportedElement=
 	  HTMLElementTagNameMap[keyof HTMLElementTagNameMap]
 	| SVGElementTagNameMap[keyof SVGElementTagNameMap]
 	| MathMLElementTagNameMap[keyof MathMLElementTagNameMap]
 	| CustomElementTagNameMap[keyof CustomElementTagNameMap]
-	| ddePublicElementTagNameMap[keyof ddePublicElementTagNameMap];
 declare global {
 	type ddeComponentAttributes= Record<any, any> | undefined;
 	type ddeElementAddon<El extends SupportedElement | DocumentFragment>= (element: El)=> El | void;
@@ -112,7 +107,7 @@ export function classListDeclarative<El extends SupportedElement>(element: El, c
 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 ExtendedHTMLElementTagNameMap= HTMLElementTagNameMap & CustomElementTagNameMap;
 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,
@@ -239,9 +234,22 @@ export const scope: {
 	pop(): ReturnType<Array<Scope>["pop"]>,
 };
 
-/* TypeScript MEH // TODO for SVG */
-type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+export function customElementRender<
+	EL extends HTMLElement,
+	P extends any = Record<string, any>
+>(
+	custom_element: EL,
+	render: (props: P)=> SupportedElement,
+	props?: P | ((...args: any[])=> P)
+): EL
+export function customElementWithDDE<EL extends HTMLElement>(custom_element: EL): EL
+export function lifecycleToEvents<EL extends HTMLElement>(custom_element: EL): EL
+export function observedAttributes(custom_element: HTMLElement): Record<string, string>
+
+/* TypeScript MEH */
 declare global{
+	type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+	
 	interface ddeDocumentFragment extends DocumentFragment{ append: ddeAppend<ddeDocumentFragment>; }
 	interface ddeHTMLElement extends HTMLElement{ append: ddeAppend<ddeHTMLElement>; }
 	interface ddeSVGElement extends SVGElement{ append: ddeAppend<ddeSVGElement>; }

dist/esm-with-observables.js

@@ -1,4 +1,4 @@
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t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var y=[{get scope(){return d.D.body},host:t=>t?t(d.D.body):d.D.body,custom_element:!1,prevent:!0}],v={get current(){return y[y.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...y]},push(t={}){return y.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return y.push(y[0])},pop(){if(y.length!==1)return y.pop()}};function I(...t){return this.appendOriginal(...t),this}function it(t){return t.append===I||(t.appendOriginal=t.append,t.append=I),t}var P;function R(t,e,...n){let r=S(this),o=0,c,s;switch((Object(e)!==e||r.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,v.push({scope:t,host:(...h)=>h.length?(o===1?n.unshift(...h):h.forEach(g=>g(s)),void 0):s}),c=t(e||void 0);let u=c instanceof d.F;if(c.nodeName==="#comment")break;let l=R.mark({type:"component",name:t.name,host:u?"this":"parentElement"});c.prepend(l),u&&(s=l);break}case t==="#text":c=w.call(this,d.D.createTextNode(""),e);break;case(t==="<>"||!t):c=w.call(this,d.D.createDocumentFragment(),e);break;case!!P:c=w.call(this,d.D.createElementNS(P,t),e);break;case!c:c=w.call(this,d.D.createElement(t),e)}return it(c),s||(s=c),n.forEach(u=>u(s)),o&&v.pop(),o=2,c}function Ct(t,e=t,n=void 0){let r=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((s,u)=>Reflect.set(s,u.name||r,u)&&s,{}),c=Reflect.has(o,r);if(t.append=new Proxy(t.append,{apply(s,u,l){if(!l.length)return t;let h=d.D.createDocumentFragment();for(let g of l){if(!g||!g.slot){c&&h.appendChild(g);continue}let i=g.slot,f=o[i];at(g,"remove","slot"),f&&(ft(f,g,n),Reflect.deleteProperty(o,i))}return c&&(o[r].replaceWith(h),Reflect.deleteProperty(o,r)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(u=>u.remove()),t.append(...s)}return e}function ft(t,e,n){n&&n(t,e);try{t.replaceWith(w(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}R.mark=function(t,e=!1){t=Object.entries(t).map(([o,c])=>o+`="${c}"`).join(" ");let n=e?"":"/",r=d.D.createComment(`<dde:mark ${t}${d.ssr}${n}>`);return e&&(r.end=d.D.createComment("</dde:mark>")),r};function St(t){let e=this;return function(...r){P=t;let o=R.call(e,...r);return P=void 0,o}}var j=new WeakMap,{setDeleteAttr:J}=d;function w(t,...e){if(!e.length)return t;j.set(t,V(t,this));for(let[n,r]of Object.entries(Object.assign({},...e)))G.call(this,t,n,r);return j.delete(t),t}function G(t,e,n){let{setRemoveAttr:r,s:o}=V(t,this),c=this;n=o.processReactiveAttribute(t,e,n,(u,l)=>G.call(c,t,u,l));let[s]=e;if(s==="=")return r(e.slice(1),n);if(s===".")return Z(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return 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-	* Investigate `__dde_attributes` key of the element.*/let[c,s]=o,u=this[U][c];if(u)return E.action(u,"_set",s)})(t),x.disconnected(function(){/*! This removes all observables mapped to attributes (`O.observedAttributes`).
-	* Investigate `__dde_attributes` key of the element.*/E.clear(...Object.values(this[U]))})(t),n};var et={isObservable:T,processReactiveAttribute(t,e,n,r){if(!T(n))return n;let o=c=>r(e,c);return H(n,o),nt(n,o,t,e),n()}};function nt(t,e,...n){let{current:r}=v;r.prevent||r.host(function(o){o[L]||(o[L]=[],x.disconnected(()=>o[L].forEach(([[c,s]])=>C(c,s,c[b]?.host()===o)))(o)),o[L].push([[t,e],...n])})}function Y(t,e,n){let r=t?()=>tt(r):(...o)=>o.length?ot(r,...o):tt(r);return rt(r,e,n)}var Et=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),q=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 rt(t,e,n){let r=[];B(n)!=="[object Object]"&&(n={});let{onclear:o}=E.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=v;return Reflect.defineProperty(t,b,{value:{value:e,actions:n,onclear:r,host:c,listeners:new Set,defined:new q},enumerable:!1,writable:!1,configurable:!0}),t.toJSON=()=>t(),Object.setPrototypeOf(t[b],Et),t}function xt(){return W[W.length-1]}function tt(t){if(!t[b])return;let{value:e,listeners:n}=t[b],r=xt();return r&&n.add(r),m.has(r)&&m.get(r).add(t),e}function ot(t,e,n){if(!t[b])return;let r=t[b];if(!(!n&&r.value===e))return r.value=e,r.listeners.forEach(o=>o(e)),e}function H(t,e){if(t[b])return t[b].listeners.add(e)}function C(t,e,n){let r=t[b];if(!r)return;let o=r.listeners.delete(e);if(n&&!r.listeners.size){if(E.clear(t),!m.has(r))return o;let c=m.get(r);if(!m.has(c))return o;m.get(c).forEach(s=>C(s,c,!0))}return o}F(et);export{E as O,w as assign,G as assignAttribute,it as chainableAppend,ut as classListDeclarative,R as createElement,St as createElementNS,kt as customElementRender,Lt as customElementWithDDE,Ft as dispatchEvent,R as el,St as elNS,at as elementAttribute,Dt as empty,T as isObservable,Lt as lifecycleToEvents,E as observable,ht as observedAttributes,x as on,F as registerReactivity,v as scope,Ct as simulateSlots};
+var R={isObservable(t){return!1},processReactiveAttribute(t,e,n,r){return n}};function F(t,e=!0){return e?Object.assign(R,t):(Object.setPrototypeOf(t,R),t)}function N(t){return R.isPrototypeOf(t)&&t!==R?t:R}function A(t){return typeof t>"u"}function J(t){let e=typeof t;return e!=="object"?e:t===null?"null":Object.prototype.toString.call(t)}function P(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}function L(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(r,o){return Reflect.set(r,st(o),e(t,o)),r},{})}function st(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var d={setDeleteAttr:it,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function it(t,e,n){if(Reflect.set(t,e,n),!!A(n)){if(Reflect.deleteProperty(t,e),t instanceof d.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var _="__dde_lifecycleToEvents";var y=[{get scope(){return d.D.body},host:t=>t?t(d.D.body):d.D.body,custom_element:!1,prevent:!0}],v={get current(){return y[y.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...y]},push(t={}){return y.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return y.push(y[0])},pop(){if(y.length!==1)return y.pop()}};function Z(...t){return this.appendOriginal(...t),this}function ut(t){return t.append===Z||(t.appendOriginal=t.append,t.append=Z),t}var T;function D(t,e,...n){let r=N(this),o=0,c,s;switch((Object(e)!==e||r.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,v.push({scope:t,host:(...p)=>p.length?(o===1?n.unshift(...p):p.forEach(b=>b(s)),void 0):s}),c=t(e||void 0);let a=c instanceof d.F;if(c.nodeName==="#comment")break;let l=D.mark({type:"component",name:t.name,host:a?"this":"parentElement"});c.prepend(l),a&&(s=l);break}case t==="#text":c=S.call(this,d.D.createTextNode(""),e);break;case(t==="<>"||!t):c=S.call(this,d.D.createDocumentFragment(),e);break;case!!T:c=S.call(this,d.D.createElementNS(T,t),e);break;case!c:c=S.call(this,d.D.createElement(t),e)}return ut(c),s||(s=c),n.forEach(a=>a(s)),o&&v.pop(),o=2,c}function Dt(t,e=t,n=void 0){let r=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((s,a)=>Reflect.set(s,a.name||r,a)&&s,{}),c=Reflect.has(o,r);if(t.append=new Proxy(t.append,{apply(s,a,l){if(!l.length)return t;let p=d.D.createDocumentFragment();for(let b of l){if(!b||!b.slot){c&&p.appendChild(b);continue}let k=b.slot,i=o[k];dt(b,"remove","slot"),i&&(ft(i,b,n),Reflect.deleteProperty(o,k))}return c&&(o[r].replaceWith(p),Reflect.deleteProperty(o,r)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(a=>a.remove()),t.append(...s)}return e}function ft(t,e,n){n&&n(t,e);try{t.replaceWith(S(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}D.mark=function(t,e=!1){t=Object.entries(t).map(([o,c])=>o+`="${c}"`).join(" ");let n=e?"":"/",r=d.D.createComment(`<dde:mark ${t}${d.ssr}${n}>`);return e&&(r.end=d.D.createComment("</dde:mark>")),r};function kt(t){let e=this;return function(...r){T=t;let o=D.call(e,...r);return T=void 0,o}}var j=new WeakMap,{setDeleteAttr:G}=d;function S(t,...e){if(!e.length)return t;j.set(t,Q(t,this));for(let[n,r]of Object.entries(Object.assign({},...e)))K.call(this,t,n,r);return j.delete(t),t}function K(t,e,n){let{setRemoveAttr:r,s:o}=Q(t,this),c=this;n=o.processReactiveAttribute(t,e,n,(a,l)=>K.call(c,t,a,l));let[s]=e;if(s==="=")return r(e.slice(1),n);if(s===".")return V(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return r(e,n,"http://www.w3.org/1999/xlink");case"textContent":return G(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return $(o,n,V.bind(null,t[e]));case"ariaset":return $(o,n,(a,l)=>r("aria-"+a,l));case"classList":return at.call(c,t,n)}return lt(t,e)?G(t,e,n):r(e,n)}function Q(t,e){if(j.has(t))return j.get(t);let r=(t instanceof d.S?ht:pt).bind(null,t,"Attribute"),o=N(e);return{setRemoveAttr:r,s:o}}function at(t,e){let n=N(this);return $(n,e,(r,o)=>t.classList.toggle(r,o===-1?void 0:!!o)),t}function Nt(t){return Array.from(t.children).forEach(e=>e.remove()),t}function dt(t,e,n,r){return t instanceof d.H?t[e+"Attribute"](n,r):t[e+"AttributeNS"](null,n,r)}function lt(t,e){if(!Reflect.has(t,e))return!1;let n=X(t,e);return!A(n.set)}function X(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||X(t,e)}function $(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,c]){o&&(c=t.processReactiveAttribute(e,o,c,n),n(o,c))})}function Y(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}functiLine truncated
+	* Investigate `__dde_attributes` key of the element.*/let[c,s]=o,a=this[H][c];if(a)return m.action(a,"_set",s)})(t),x.disconnected(function(){/*! This removes all observables mapped to attributes (`O.observedAttributes`).
+	* Investigate `__dde_attributes` key of the element.*/m.clear(...Object.values(this[H]))})(t),n};var nt={isObservable:W,processReactiveAttribute(t,e,n,r){if(!W(n))return n;let o=c=>{if(!t.isConnected)return w(n,o);r(e,c)};return I(n,o),rt(n,o,t,e),n()}};function rt(t,e,...n){let{current:r}=v;r.prevent||r.host(function(o){o[O]||(o[O]=[],x.disconnected(()=>o[O].forEach(([[c,s]])=>w(c,s,c[h]?.host()===o)))(o)),o[O].push([[t,e],...n])})}function tt(t,e,n){let r=t?()=>et(r):(...o)=>o.length?ct(r,...o):et(r);return ot(r,e,n)}var yt=Object.assign(Object.create(null),{stopPropagation(){this.skip=!0}}),B=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=[];J(n)!=="[object Object]"&&(n={});let{onclear:o}=m.symbols;n[o]&&(r.push(n[o]),Reflect.deleteProperty(n,o));let{host:c}=v;return Reflect.defineProperty(t,h,{value:{value:e,actions:n,onclear:r,host:c,listeners:new Set,defined:new B},enumerable:!1,writable:!1,configurable:!0}),t.toJSON=()=>t(),Object.setPrototypeOf(t[h],yt),t}function At(){return q[q.length-1]}function et(t){if(!t[h])return;let{value:e,listeners:n}=t[h],r=At();return r&&n.add(r),g.has(r)&&g.get(r).add(t),e}function ct(t,e,n){if(!t[h])return;let r=t[h];if(!(!n&&r.value===e))return r.value=e,r.listeners.forEach(o=>o(e)),e}function I(t,e){if(t[h])return t[h].listeners.add(e)}function w(t,e,n){let r=t[h];if(!r)return;let o=r.listeners.delete(e);if(n&&!r.listeners.size){if(m.clear(t),!g.has(r))return o;let c=g.get(r);if(!g.has(c))return o;g.get(c).forEach(s=>w(s,c,!0))}return o}F(nt);export{m as O,S as assign,K as assignAttribute,ut as chainableAppend,at as classListDeclarative,D as createElement,kt as createElementNS,Mt as customElementRender,Wt as customElementWithDDE,Ut as dispatchEvent,D as el,kt as elNS,dt as elementAttribute,Nt as empty,W as isObservable,Wt as lifecycleToEvents,m as observable,bt as observedAttributes,x as on,F as registerReactivity,v as scope,Dt as simulateSlots};

dist/esm.d.ts

@@ -54,7 +54,7 @@ interface observable{
 	 * */
 	el<S extends any>(observable: Observable<S, any>, el: (v: S)=> Element | Element[] | DocumentFragment): DocumentFragment;
 
-    attribute(name: string, initial?: string): Observable<string, {}>;
+    observedAttributes(custom_element: HTMLElement): Record<string, Observable<any, any>>;
 }
 export const observable: observable;
 export const O: observable;
@@ -64,16 +64,11 @@ declare global {
 	type ddeActions<V>= Actions<V>
 }
 type CustomElementTagNameMap= { '#text': Text, '#comment': Comment }
-declare global {
-	interface ddePublicElementTagNameMap{
-	}
-}
 type SupportedElement=
 	  HTMLElementTagNameMap[keyof HTMLElementTagNameMap]
 	| SVGElementTagNameMap[keyof SVGElementTagNameMap]
 	| MathMLElementTagNameMap[keyof MathMLElementTagNameMap]
 	| CustomElementTagNameMap[keyof CustomElementTagNameMap]
-	| ddePublicElementTagNameMap[keyof ddePublicElementTagNameMap];
 declare global {
 	type ddeComponentAttributes= Record<any, any> | undefined;
 	type ddeElementAddon<El extends SupportedElement | DocumentFragment>= (element: El)=> El | void;
@@ -112,7 +107,7 @@ export function classListDeclarative<El extends SupportedElement>(element: El, c
 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 ExtendedHTMLElementTagNameMap= HTMLElementTagNameMap & CustomElementTagNameMap;
 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,
@@ -239,9 +234,22 @@ export const scope: {
 	pop(): ReturnType<Array<Scope>["pop"]>,
 };
 
-/* TypeScript MEH // TODO for SVG */
-type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+export function customElementRender<
+	EL extends HTMLElement,
+	P extends any = Record<string, any>
+>(
+	custom_element: EL,
+	render: (props: P)=> SupportedElement,
+	props?: P | ((...args: any[])=> P)
+): EL
+export function customElementWithDDE<EL extends HTMLElement>(custom_element: EL): EL
+export function lifecycleToEvents<EL extends HTMLElement>(custom_element: EL): EL
+export function observedAttributes(custom_element: HTMLElement): Record<string, string>
+
+/* TypeScript MEH */
 declare global{
+	type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+	
 	interface ddeDocumentFragment extends DocumentFragment{ append: ddeAppend<ddeDocumentFragment>; }
 	interface ddeHTMLElement extends HTMLElement{ append: ddeAppend<ddeHTMLElement>; }
 	interface ddeSVGElement extends SVGElement{ append: ddeAppend<ddeSVGElement>; }

dist/esm.js

@@ -1 +1 @@
-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 _(t){return m.isPrototypeOf(t)&&t!==m?t:m}function E(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)}}function T(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(c,r){return Reflect.set(c,H(r),e(t,r)),c},{})}function H(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var a={setDeleteAttr:z,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function z(t,e,n){if(Reflect.set(t,e,n),!!E(n)){if(Reflect.deleteProperty(t,e),t instanceof a.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var g=[{get scope(){return a.D.body},host:t=>t?t(a.D.body):a.D.body,custom_element:!1,prevent:!0}],v={get current(){return g[g.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...g]},push(t={}){return g.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return g.push(g[0])},pop(){if(g.length!==1)return g.pop()}};function L(...t){return this.appendOriginal(...t),this}function B(t){return t.append===L||(t.appendOriginal=t.append,t.append=L),t}var C;function N(t,e,...n){let c=_(this),r=0,o,s;switch((Object(e)!==e||c.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{r=1,v.push({scope:t,host:(...b)=>b.length?(r===1?n.unshift(...b):b.forEach(h=>h(s)),void 0):s}),o=t(e||void 0);let d=o instanceof a.F;if(o.nodeName==="#comment")break;let l=N.mark({type:"component",name:t.name,host:d?"this":"parentElement"});o.prepend(l),d&&(s=l);break}case t==="#text":o=A.call(this,a.D.createTextNode(""),e);break;case(t==="<>"||!t):o=A.call(this,a.D.createDocumentFragment(),e);break;case!!C:o=A.call(this,a.D.createElementNS(C,t),e);break;case!o:o=A.call(this,a.D.createElement(t),e)}return B(o),s||(s=o),n.forEach(d=>d(s)),r&&v.pop(),r=2,o}function st(t,e=t,n=void 0){let c=Symbol.for("default"),r=Array.from(e.querySelectorAll("slot")).reduce((s,d)=>Reflect.set(s,d.name||c,d)&&s,{}),o=Reflect.has(r,c);if(t.append=new Proxy(t.append,{apply(s,d,l){if(!l.length)return t;let b=a.D.createDocumentFragment();for(let h of l){if(!h||!h.slot){o&&b.appendChild(h);continue}let i=h.slot,f=r[i];G(h,"remove","slot"),f&&(I(f,h,n),Reflect.deleteProperty(r,i))}return o&&(r[c].replaceWith(b),Reflect.deleteProperty(r,c)),t.append=s,t}}),t!==e){let s=Array.from(t.childNodes);s.forEach(d=>d.remove()),t.append(...s)}return e}function I(t,e,n){n&&n(t,e);try{t.replaceWith(A(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}N.mark=function(t,e=!1){t=Object.entries(t).map(([r,o])=>r+`="${o}"`).join(" ");let n=e?"":"/",c=a.D.createComment(`<dde:mark ${t}${a.ssr}${n}>`);return e&&(c.end=a.D.createComment("</dde:mark>")),c};function it(t){let e=this;return function(...c){C=t;let r=N.call(e,...c);return C=void 0,r}}var D=new WeakMap,{setDeleteAttr:M}=a;function A(t,...e){if(!e.length)return t;D.set(t,F(t,this));for(let[n,c]of Object.entries(Object.assign({},...e)))j.call(this,t,n,c);return D.delete(t),t}function j(t,e,n){let{setRemoveAttr:c,s:r}=F(t,this),o=this;n=r.processReactiveAttribute(t,e,n,(d,l)=>j.call(o,t,d,l));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-$2").toLowerCase(),c(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return c(e,n,"http://www.w3.org/1999/xlink");case"textContent":return M(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return S(r,n,W.bind(null,t[e]));case"ariaset":return S(r,n,(d,l)=>c("aria-"+d,l));case"classList":return Z.call(o,t,n)}return V(t,e)?M(t,e,n):c(e,n)}function F(t,e){if(D.has(t))return D.get(t);let c=(t instanceof a.S?K:J).bind(null,t,"Attribute"),r=_(e);return{setRemoveAttr:c,s:r}}function Z(t,e){let n=_(this);return S(n,e,(c,r)=>t.classList.toggle(c,r===-1?void 0:!!r)),t}function ft(t){return Array.from(t.children).forEach(e=>e.remove()),t}function G(t,e,n,c){return t instanceof a.H?t[e+"Attribute"](n,c):t[e+"AttributeNS"](null,n,c)}function V(t,e){if(!Reflect.has(t,e))return!1;let n=$(t,e);return!E(n.set)}function $(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||$(t,e)}function S(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([r,o]){r&&(o=t.processReactiveAttribute(e,r,o,n),n(r,o))})}function k(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function J(t,e,n,c){return t[(E(c)?"remove":"set")+e](n,k(c))}function K(t,e,n,c,r=null){return t[(E(c)?"remove":"set")+e+"NS"](r,n,k(c))}function W(t,e,n)Line truncated
+var y={isObservable(t){return!1},processReactiveAttribute(t,e,n,r){return n}};function H(t,e=!0){return e?Object.assign(y,t):(Object.setPrototypeOf(t,y),t)}function D(t){return y.isPrototypeOf(t)&&t!==y?t:y}function E(t){return typeof t>"u"}function R(t,e){if(!t||!(t instanceof AbortSignal))return!0;if(!t.aborted)return t.addEventListener("abort",e),function(){t.removeEventListener("abort",e)}}function M(t,e){let{observedAttributes:n=[]}=t.constructor;return n.reduce(function(r,o){return Reflect.set(r,z(o),e(t,o)),r},{})}function z(t){return t.replace(/-./g,e=>e[1].toUpperCase())}var a={setDeleteAttr:B,ssr:"",D:globalThis.document,F:globalThis.DocumentFragment,H:globalThis.HTMLElement,S:globalThis.SVGElement,M:globalThis.MutationObserver};function B(t,e,n){if(Reflect.set(t,e,n),!!E(n)){if(Reflect.deleteProperty(t,e),t instanceof a.H&&t.getAttribute(e)==="undefined")return t.removeAttribute(e);if(Reflect.get(t,e)==="undefined")return Reflect.set(t,e,"")}}var x="__dde_lifecycleToEvents";var g=[{get scope(){return a.D.body},host:t=>t?t(a.D.body):a.D.body,custom_element:!1,prevent:!0}],v={get current(){return g[g.length-1]},get host(){return this.current.host},preventDefault(){let{current:t}=this;return t.prevent=!0,t},get state(){return[...g]},push(t={}){return g.push(Object.assign({},this.current,{prevent:!1},t))},pushRoot(){return g.push(g[0])},pop(){if(g.length!==1)return g.pop()}};function k(...t){return this.appendOriginal(...t),this}function I(t){return t.append===k||(t.appendOriginal=t.append,t.append=k),t}var O;function L(t,e,...n){let r=D(this),o=0,c,i;switch((Object(e)!==e||r.isObservable(e))&&(e={textContent:e}),!0){case typeof t=="function":{o=1,v.push({scope:t,host:(...h)=>h.length?(o===1?n.unshift(...h):h.forEach(l=>l(i)),void 0):i}),c=t(e||void 0);let d=c instanceof a.F;if(c.nodeName==="#comment")break;let p=L.mark({type:"component",name:t.name,host:d?"this":"parentElement"});c.prepend(p),d&&(i=p);break}case t==="#text":c=A.call(this,a.D.createTextNode(""),e);break;case(t==="<>"||!t):c=A.call(this,a.D.createDocumentFragment(),e);break;case!!O:c=A.call(this,a.D.createElementNS(O,t),e);break;case!c:c=A.call(this,a.D.createElement(t),e)}return I(c),i||(i=c),n.forEach(d=>d(i)),o&&v.pop(),o=2,c}function it(t,e=t,n=void 0){let r=Symbol.for("default"),o=Array.from(e.querySelectorAll("slot")).reduce((i,d)=>Reflect.set(i,d.name||r,d)&&i,{}),c=Reflect.has(o,r);if(t.append=new Proxy(t.append,{apply(i,d,p){if(!p.length)return t;let h=a.D.createDocumentFragment();for(let l of p){if(!l||!l.slot){c&&h.appendChild(l);continue}let C=l.slot,s=o[C];V(l,"remove","slot"),s&&(Z(s,l,n),Reflect.deleteProperty(o,C))}return c&&(o[r].replaceWith(h),Reflect.deleteProperty(o,r)),t.append=i,t}}),t!==e){let i=Array.from(t.childNodes);i.forEach(d=>d.remove()),t.append(...i)}return e}function Z(t,e,n){n&&n(t,e);try{t.replaceWith(A(e,{className:[e.className,t.className],dataset:{...t.dataset}}))}catch{t.replaceWith(e)}}L.mark=function(t,e=!1){t=Object.entries(t).map(([o,c])=>o+`="${c}"`).join(" ");let n=e?"":"/",r=a.D.createComment(`<dde:mark ${t}${a.ssr}${n}>`);return e&&(r.end=a.D.createComment("</dde:mark>")),r};function ut(t){let e=this;return function(...r){O=t;let o=L.call(e,...r);return O=void 0,o}}var _=new WeakMap,{setDeleteAttr:W}=a;function A(t,...e){if(!e.length)return t;_.set(t,F(t,this));for(let[n,r]of Object.entries(Object.assign({},...e)))q.call(this,t,n,r);return _.delete(t),t}function q(t,e,n){let{setRemoveAttr:r,s:o}=F(t,this),c=this;n=o.processReactiveAttribute(t,e,n,(d,p)=>q.call(c,t,d,p));let[i]=e;if(i==="=")return r(e.slice(1),n);if(i===".")return j(t,e.slice(1),n);if(/(aria|data)([A-Z])/.test(e))return e=e.replace(/([a-z])([A-Z])/g,"$1-$2").toLowerCase(),r(e,n);switch(e==="className"&&(e="class"),e){case"xlink:href":return r(e,n,"http://www.w3.org/1999/xlink");case"textContent":return W(t,e,n);case"style":if(typeof n!="object")break;case"dataset":return N(o,n,j.bind(null,t[e]));case"ariaset":return N(o,n,(d,p)=>r("aria-"+d,p));case"classList":return G.call(c,t,n)}return J(t,e)?W(t,e,n):r(e,n)}function F(t,e){if(_.has(t))return _.get(t);let r=(t instanceof a.S?Q:K).bind(null,t,"Attribute"),o=D(e);return{setRemoveAttr:r,s:o}}function G(t,e){let n=D(this);return N(n,e,(r,o)=>t.classList.toggle(r,o===-1?void 0:!!o)),t}function ft(t){return Array.from(t.children).forEach(e=>e.remove()),t}function V(t,e,n,r){return t instanceof a.H?t[e+"Attribute"](n,r):t[e+"AttributeNS"](null,n,r)}function J(t,e){if(!Reflect.has(t,e))return!1;let n=$(t,e);return!E(n.set)}function $(t,e){if(t=Object.getPrototypeOf(t),!t)return{};let n=Object.getOwnPropertyDescriptor(t,e);return n||$(t,e)}function N(t,e,n){if(!(typeof e!="object"||e===null))return Object.entries(e).forEach(function([o,c]){o&&(c=t.processReactiveAttribute(e,o,c,n),n(o,c))})}function U(t){return Array.isArray(t)?t.filter(Boolean).join(" "):t}function K(t,e,n,r){return t[(E(r)?"remove":"set")+e](n,U(r))}function Q(t,e,n,r,o=null){return t[(E(r)?"remove":"set")+e+"Line truncated

docs/p03-events.html

@@ -67,7 +67,7 @@ document.body.append(
 function log({ type, detail }){
 	console.log({ _this: this, type, detail });
 }
-</code></div><script>Flems(document.getElementById("code-example-1-35hjjp3e4js"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js\\\";\\nconst paragraph= el(\\\"p\\\", \\\"See live-cycle events in console.\\\",\\n\\tel=> log({ type: \\\"dde:created\\\", detail: el }),\\n\\ton.connected(log),\\n\\ton.disconnected(log),\\n\\ton.attributeChanged(log));\\n\\ndocument.body.append(\\n\\tparagraph,\\n\\tel(\\\"button\\\", \\\"Update attribute\\\", on(\\\"click\\\", ()=> paragraph.setAttribute(\\\"test\\\", Math.random().toString()))),\\n\\t\\\" \\\",\\n\\tel(\\\"button\\\", \\\"Remove\\\", on(\\\"click\\\", ()=> paragraph.remove()))\\n);\\n\\n/** @param {Partial<CustomEvent>} event */\\nfunction log({ type, detail }){\\n\\tconsole.log({ _this: this, type, detail });\\n}\\n\"}],\"toolbar\":false}"));</script><p>For Custom elements, we will later introduce a way to replace <code>*Callback</code> syntax with <code>dde:*</code> events. The <code>on.*</code> functions then listen to the appropriate Custom Elements events (see <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_custom_elements#custom_element_lifecycle_callbacks">Custom element lifecycle callbacks | MDN</a>).</p><p>But, in case of regular elemnets the <a href="https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver"><code>MutationObserver</code> | MDN</a> is internaly used to track these events. Therefore, there are some drawbacks:</p><ul><li>To proper listener registration, you need to use <code>on.*</code> not `on("dde:*", …)`!</li><li>Use sparingly! Internally, library must loop of all registered events and fires event properly. <strong>It is good practice to use the fact that if an element is removed, its children are also removed!</strong> In this spirit, we will introduce later the <strong>host</strong> syntax to register clean up procedures when the component is removed from the app.</li></ul><h3 id="h-final-notes"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-final-notes" tabindex="-1">#</a> Final notes</h3><p>The library also provides a&nbsp;method to dispatch the events.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-2-b6a1hbrxh7s" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el, on, dispatchEvent } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
+</code></div><script>Flems(document.getElementById("code-example-1-35hjjp3e4js"), JSON.parse("{\"files\":[{\"name\":\".js\",\"content\":\"import { el, on } from \\\"https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js\\\";\\nconst paragraph= el(\\\"p\\\", \\\"See live-cycle events in console.\\\",\\n\\tel=> log({ type: \\\"dde:created\\\", detail: el }),\\n\\ton.connected(log),\\n\\ton.disconnected(log),\\n\\ton.attributeChanged(log));\\n\\ndocument.body.append(\\n\\tparagraph,\\n\\tel(\\\"button\\\", \\\"Update attribute\\\", on(\\\"click\\\", ()=> paragraph.setAttribute(\\\"test\\\", Math.random().toString()))),\\n\\t\\\" \\\",\\n\\tel(\\\"button\\\", \\\"Remove\\\", on(\\\"click\\\", ()=> paragraph.remove()))\\n);\\n\\n/** @param {Partial<CustomEvent>} event */\\nfunction log({ type, detail }){\\n\\tconsole.log({ _this: this, type, detail });\\n}\\n\"}],\"toolbar\":false}"));</script><p>For Custom elements, we will later introduce a way to replace <code>*Callback</code> syntax with <code>dde:*</code> events. The <code>on.*</code> functions then listen to the appropriate Custom Elements events (see <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_components/Using_custom_elements#custom_element_lifecycle_callbacks">Custom element lifecycle callbacks | MDN</a>).</p><p>But, in case of regular elemnets the <a href="https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver"><code>MutationObserver</code> | MDN</a> is internaly used to track these events. Therefore, there are some drawbacks:</p><ul><li>To proper listener registration, you need to use <code>on.*</code> not `on("dde:*", …)`!</li><li>Use sparingly! Internally, library must loop of all registered events and fires event properly. <strong>It is good practice to use the fact that if an element is removed, its children are also removed!</strong> In this spirit, we will introduce later the <strong>host</strong> syntax to register clean up procedures when the component is removed from the app.</li></ul><p>To provide intuitive behaviour, similar also to how the life-cycle events works in other frameworks/libraries, deka-dom-el library ensures that <code>on.connected</code> and <code>on.disconnected</code> are called only once and only when the element is (dis)connected to live DOM. The solution is inspired by <a href="https://vuejs.org/guide/extras/web-components.html#lifecycle" title="Vue and Web Components | Lifecycle">Vue</a>. For using native behaviour re-(dis)connecting element, use:</p><ul><li>custom <code>MutationObserver</code> or logic in (dis)<div class="code"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js"></code></div> or…</li><li>re-add <code>on.connected</code> or <code>on.disconnected</code> listeners.</li></ul><h3 id="h-final-notes"><!--<dde:mark type="component" name="h3" host="parentElement" ssr/>--><a href="#h-final-notes" tabindex="-1">#</a> Final notes</h3><p>The library also provides a&nbsp;method to dispatch the events.</p><!--<dde:mark type="component" name="example" host="this" ssr/>--><div id="code-example-2-b6a1hbrxh7s" class="example"><!--<dde:mark type="component" name="code" host="parentElement" ssr/>--><code class="language-js">import { el, on, dispatchEvent } from "https://cdn.jsdelivr.net/gh/jaandrle/deka-dom-el/dist/esm-with-observables.js";
 document.body.append(
 	el("p", "Listenning to `test` event.", on("test", console.log)).append(
 		el("br"),

docs_src/p03-events.html.js

@@ -108,6 +108,17 @@ export function page({ pkg, info }){
 				" clean up procedures when the component is removed from the app."
 			),
 		),
+		el("p").append(
+			"To provide intuitive behaviour, similar also to how the life-cycle events works in other",
+			" frameworks/libraries, deka-dom-el library ensures that ", el("code", "on.connected"),
+			" and ", el("code", "on.disconnected"), " are called only once and only when the element",
+			" is (dis)connected to live DOM. The solution is inspired by ", el("a", { textContent: "Vue", href: "https://vuejs.org/guide/extras/web-components.html#lifecycle", title: "Vue and Web Components | Lifecycle" }), ".",
+			" For using native behaviour re-(dis)connecting element, use:"
+		),
+		el("ul").append(
+			el("li").append("custom ", el("code", "MutationObserver"), " or logic in (dis)", el(code, "connectedCallback"), " or…"),
+			el("li").append("re-add ", el("code", "on.connected"), " or ", el("code", "on.disconnected"), " listeners.")
+		),
 
 		el(h3, "Final notes"),
 		el("p", "The library also provides a method to dispatch the events."),

examples/components/todosComponent.js

@@ -84,7 +84,7 @@ function todoComponent({ textContent, value }){
 	return el("li").append(
 		O.el(is_editable, is=> is
 			? el("input", { value: textContent(), type: "text" }, onedited)
-			: el("span", { textContent, onclick: is_editable.bind(null, true) }),
+			: el("span", { textContent, onclick: is_editable.bind(null, true) })
 		),
 		el("button", { type: "button", value, textContent: "-" }, onclick)
 	);

index.d.ts

@@ -1,16 +1,11 @@
 import { Observable } from "./observables";
 
 type CustomElementTagNameMap= { '#text': Text, '#comment': Comment }
-declare global {
-	interface ddePublicElementTagNameMap{
-	}
-}
 type SupportedElement=
 	  HTMLElementTagNameMap[keyof HTMLElementTagNameMap]
 	| SVGElementTagNameMap[keyof SVGElementTagNameMap]
 	| MathMLElementTagNameMap[keyof MathMLElementTagNameMap]
 	| CustomElementTagNameMap[keyof CustomElementTagNameMap]
-	| ddePublicElementTagNameMap[keyof ddePublicElementTagNameMap];
 declare global {
 	type ddeComponentAttributes= Record<any, any> | undefined;
 	type ddeElementAddon<El extends SupportedElement | DocumentFragment>= (element: El)=> El | void;
@@ -48,7 +43,7 @@ export function classListDeclarative<El extends SupportedElement>(element: El, c
 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 ExtendedHTMLElementTagNameMap= HTMLElementTagNameMap & CustomElementTagNameMap;
 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,
@@ -187,9 +182,10 @@ export function customElementWithDDE<EL extends HTMLElement>(custom_element: EL)
 export function lifecycleToEvents<EL extends HTMLElement>(custom_element: EL): EL
 export function observedAttributes(custom_element: HTMLElement): Record<string, string>
 
-/* TypeScript MEH // TODO for SVG */
-type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+/* TypeScript MEH */
 declare global{
+	type ddeAppend<el>= (...nodes: (Node | string)[])=> el;
+	
 	interface ddeDocumentFragment extends DocumentFragment{ append: ddeAppend<ddeDocumentFragment>; }
 	interface ddeHTMLElement extends HTMLElement{ append: ddeAppend<ddeHTMLElement>; }
 	interface ddeSVGElement extends SVGElement{ append: ddeAppend<ddeSVGElement>; }

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "deka-dom-el",
-	"version": "0.7.7",
+	"version": "0.7.8",
 	"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",
@@ -59,18 +59,24 @@
 	"size-limit": [
 		{
 			"path": "./index.js",
-			"limit": "10 kB",
+			"limit": "10.5 kB",
 			"gzip": false,
 			"brotli": false
 
 		},
 		{
 			"path": "./observables.js",
-			"limit": "11.5 kB",
+			"limit": "12 kB",
 			"gzip": false,
 			"brotli": false
 
 		},
+		{
+			"path": "./index-with-observables.js",
+			"limit": "15 kB",
+			"gzip": false,
+			"brotli": false
+		},
 		{
 			"path": "./index-with-observables.js",
 			"limit": "5 kB"

src/customElement.js

@@ -1,3 +1,4 @@
+import { keyLTE } from "./dom-common.js";
 import { scope } from "./dom.js";
 export function customElementRender(custom_element, render, props= observedAttributes){
 	scope.push({
@@ -11,20 +12,24 @@ export function customElementRender(custom_element, render, props= observedAttri
 	return out;
 }
 export function lifecycleToEvents(class_declaration){
-	for (const name of [ "connected", "disconnected" ])
-		wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
+	wrapMethod(class_declaration.prototype, "connectedCallback", function(target, thisArg, detail){
 		target.apply(thisArg, detail);
-			thisArg.dispatchEvent(new Event("dde:"+name));
+		thisArg.dispatchEvent(new Event("dde:connected"));
 	});
-	const name= "attributeChanged";
-	wrapMethod(class_declaration.prototype, name+"Callback", function(target, thisArg, detail){
+	wrapMethod(class_declaration.prototype, "disconnectedCallback", function(target, thisArg, detail){
+		target.apply(thisArg, detail);
+		(queueMicrotask || setTimeout)(
+			()=> !thisArg.isConnected && thisArg.dispatchEvent(new Event("dde:disconnected"))
+		);
+	});
+	wrapMethod(class_declaration.prototype, "attributeChangedCallback", function(target, thisArg, detail){
 		const [ attribute, , value ]= detail;
-		thisArg.dispatchEvent(new CustomEvent("dde:"+name, {
+		thisArg.dispatchEvent(new CustomEvent("dde:attributeChanged", {
 			detail: [ attribute, value ]
 		}));
 		target.apply(thisArg, detail);
 	});
-	class_declaration.prototype.__dde_lifecycleToEvents= true;
+	class_declaration.prototype[keyLTE]= true;
 	return class_declaration;
 }
 export { lifecycleToEvents as customElementWithDDE };

src/dom-common.js

@@ -26,3 +26,4 @@ function setDeleteAttr(obj, prop, val){
 	if(Reflect.get(obj, prop)==="undefined")
 		return Reflect.set(obj, prop, "");
 }
+export const keyLTE= "__dde_lifecycleToEvents"; //boolean

src/events.js

@@ -1,5 +1,5 @@
 export { registerReactivity } from './observables-common.js';
-import { enviroment as env } from './dom-common.js';
+import { enviroment as env, keyLTE } from './dom-common.js';
 
 export function dispatchEvent(name, options, host){
 	if(!options) options= {};
@@ -26,6 +26,7 @@ const els_attribute_store= new WeakSet();
 import { scope } from "./dom.js";
 import { onAbort } from './helpers.js';
 //TODO: cleanUp when event before abort?
+//TODO: docs (e.g.) https://nolanlawson.com/2024/01/13/web-component-gotcha-constructor-vs-connectedcallback/
 on.connected= function(listener, options){
 	const { custom_element }= scope.current;
 	const name= "connected";
@@ -36,7 +37,7 @@ on.connected= function(listener, options){
 		if(custom_element) element= custom_element;
 		const event= "dde:"+name;
 		element.addEventListener(event, listener, options);
-		if(element.__dde_lifecycleToEvents) return element;
+		if(element[keyLTE]) return element;
 		if(element.isConnected) return ( element.dispatchEvent(new Event(event)), element );
 
 		const c= onAbort(options.signal, ()=> c_ch_o.offConnected(element, listener));
@@ -54,7 +55,7 @@ on.disconnected= function(listener, options){
 		if(custom_element) element= custom_element;
 		const event= "dde:"+name;
 		element.addEventListener(event, listener, options);
-		if(element.__dde_lifecycleToEvents) return element;
+		if(element[keyLTE]) return element;
 
 		const c= onAbort(options.signal, ()=> c_ch_o.offDisconnected(element, listener));
 		if(c) c_ch_o.onDisconnected(element, listener);
@@ -77,7 +78,7 @@ on.attributeChanged= function(listener, options){
 	return function registerElement(element){
 		const event= "dde:"+name;
 		element.addEventListener(event, listener, options);
-		if(element.__dde_lifecycleToEvents || els_attribute_store.has(element))
+		if(element[keyLTE] || els_attribute_store.has(element))
 			return element;
 		
 		if(!env.M) return element;
@@ -171,13 +172,13 @@ function connectionsChangesObserverConstructor(){
 	function requestIdle(){ return new Promise(function(resolve){
 		(requestIdleCallback || requestAnimationFrame)(resolve);
 	}); }
-	async function collectChildren(element, filter){
+	async function collectChildren(element){
 		if(store.size > 30)//TODO limit?
 			await requestIdle();
 		const out= [];
 		if(!(element instanceof Node)) return out;
 		for(const el of store.keys()){
-			if(el===element || !(el instanceof Node) || filter(el)) continue;
+			if(el===element || !(el instanceof Node)) continue;
 			if(element.contains(el))
 				out.push(el);
 		}
@@ -186,7 +187,7 @@ function connectionsChangesObserverConstructor(){
 	function observerAdded(addedNodes, is_root){
 		let out= false;
 		for(const element of addedNodes){
-			if(is_root) collectChildren(element, el=> !el.isConnectedd).then(observerAdded);
+			if(is_root) collectChildren(element).then(observerAdded);
 			if(!store.has(element)) continue;
 			
 			const ls= store.get(element);
@@ -203,17 +204,21 @@ function connectionsChangesObserverConstructor(){
 	function observerRemoved(removedNodes, is_root){
 		let out= false;
 		for(const element of removedNodes){
-			if(is_root) collectChildren(element, el=> el.isConnectedd).then(observerRemoved);
+			if(is_root) collectChildren(element).then(observerRemoved);
 			if(!store.has(element)) continue;
 			
 			const ls= store.get(element);
 			if(!ls.length_d) continue;
-			
-			element.dispatchEvent(new Event("dde:disconnected"));
-			
-			store.delete(element);
+			(queueMicrotask || setTimeout)(dispatchRemove(element));
 			out= true;
 		}
 		return out;
 	}
+	function dispatchRemove(element){
+		return ()=> {
+			if(element.isConnected) return;
+			element.dispatchEvent(new Event("dde:disconnected"));
+			store.delete(element);
+		};
+	}
 }

src/observables-lib.js

@@ -96,7 +96,7 @@ observable.el= function(o, map){
 	out.append(mark_start, mark_end);
 	const { current }= scope;
 	const reRenderReactiveElement= v=> {
-		if(!mark_start.parentNode || !mark_end.parentNode)
+		if(!mark_start.parentNode || !mark_end.parentNode) // isConnected or wasn’t yet rendered
 			return removeObservableListener(o, reRenderReactiveElement);
 		scope.push(current);
 		let els= map(v);
@@ -107,12 +107,21 @@ observable.el= function(o, map){
 		while(( el_r= mark_start.nextSibling ) !== mark_end)
 			el_r.remove();
 		mark_start.after(...els);
+		if(mark_start.isConnected)
+			requestCleanUpReactives(current.host());
 	};
 	addObservableListener(o, reRenderReactiveElement);
 	removeObservablesFromElements(o, reRenderReactiveElement, mark_start, map);
 	reRenderReactiveElement(o());
 	return out;
 };
+function requestCleanUpReactives(host){
+	if(!host || !host[key_reactive]) return;
+	(requestIdleCallback || setTimeout)(function(){
+		host[key_reactive]= host[key_reactive]
+			.filter(([ o, el ])=> el.isConnected ? true : (removeObservableListener(...o), false));
+	});
+}
 import { on } from "./events.js";
 import { observedAttributes } from "./helpers.js";
 const observedAttributeActions= {
@@ -152,7 +161,11 @@ export const observables_config= {
 	isObservable,
 	processReactiveAttribute(element, key, attrs, set){
 		if(!isObservable(attrs)) return attrs;
-		const l= attr=> set(key, attr);
+		const l= attr=> {
+			if(!element.isConnected)
+				return removeObservableListener(attrs, l);
+			set(key, attr);
+		};
 		addObservableListener(attrs, l);
 		removeObservablesFromElements(attrs, l, element, key);
 		return attrs();