1
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mirror of https://github.com/jaandrle/deka-dom-el synced 2025-07-01 12:22:15 +02:00

🔤 🐛 v0.9.1-alpha (#30)

* :tap: removed on.attributeChanged and static observedAttributes

*  import optimalization

*  scope.signal

* 🔤 🐛

*  🐛 registerReactivity and types

* 🔤

* 

* 🔤

* 🐛 Node in enviroment

*  todos

* 

*  🔤

*  lint

*  memo

* 🔤 🐛 memo

*  🔤 todomvc

* 🐛 types

* 🔤 p08 signal factory

* 🔤  types

*  🔤 lint

* 🔤

* 🔤

* 🔤

* 🔤

* 📺
This commit is contained in:
2025-03-12 18:37:42 +01:00
committed by GitHub
parent e1f321004d
commit 25d475ec04
83 changed files with 4899 additions and 2182 deletions

View File

@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
export const signal: signal;
@ -80,10 +81,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -145,6 +147,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -157,7 +160,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -166,9 +168,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -186,7 +188,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -202,7 +204,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -214,7 +220,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -235,6 +240,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

View File

@ -32,8 +32,8 @@ function onAbort(signal2, listener) {
};
}
function observedAttributes(instance, observedAttribute2) {
const { observedAttributes: observedAttributes3 = [] } = instance.constructor;
return observedAttributes3.reduce(function(out, name) {
const { observedAttributes: observedAttributes2 = [] } = instance.constructor;
return observedAttributes2.reduce(function(out, name) {
out[kebabToCamel(name)] = observedAttribute2(instance, name);
return out;
}, {});
@ -91,6 +91,7 @@ var enviroment = {
setDeleteAttr,
ssr: "",
D: globalThis.document,
N: globalThis.Node,
F: globalThis.DocumentFragment,
H: globalThis.HTMLElement,
S: globalThis.SVGElement,
@ -111,6 +112,215 @@ var evc = "dde:connected";
var evd = "dde:disconnected";
var eva = "dde:attributeChanged";
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, enviroment.N)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, enviroment.N)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
// src/dom.js
function queue(promise) {
return enviroment.q(promise);
@ -122,6 +332,7 @@ var scopes = [{
host: (c) => c ? c(enviroment.D.body) : enviroment.D.body,
prevent: true
}];
var store_abort = /* @__PURE__ */ new WeakMap();
var scope = {
/**
* Gets the current scope
@ -138,6 +349,17 @@ var scope = {
return this.current.host;
},
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
get signal() {
const { host } = this;
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
},
/**
* Prevents default behavior in the current scope
* @returns {Object} Current scope context
*/
@ -380,172 +602,8 @@ function setDelete(obj, key, val) {
return Reflect.deleteProperty(obj, key);
}
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, Node)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, Node)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/customElement.js
function customElementRender(target, render, props = observedAttributes2) {
function customElementRender(target, render, props = {}) {
const custom_element = target.host || target;
scope.push({
scope: custom_element,
@ -586,81 +644,40 @@ function wrapMethod(obj, method, apply) {
obj[method] = new Proxy(obj[method] || (() => {
}), { apply });
}
function observedAttributes2(instance) {
return observedAttributes(instance, (i, n) => i.getAttribute(n));
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
// src/memo.js
var memoMark = "__dde_memo";
var memo_scope = [];
function memo(key, generator) {
if (!memo_scope.length) return generator(key);
const k = typeof key === "object" ? JSON.stringify(key) : key;
const [{ cache, after }] = memo_scope;
return after(k, hasOwn(cache, k) ? cache[k] : generator(key));
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
memo.isScope = function(obj) {
return obj[memoMark];
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
var store_abort = /* @__PURE__ */ new WeakMap();
on.disconnectedAsAbort = function(host) {
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
};
var els_attribute_store = /* @__PURE__ */ new WeakSet();
on.attributeChanged = function(listener, options) {
if (typeof options !== "object")
options = {};
return function registerElement(element) {
element.addEventListener(eva, listener, options);
if (element[keyLTE] || els_attribute_store.has(element))
return element;
if (!enviroment.M) return element;
const observer = new enviroment.M(function(mutations) {
for (const { attributeName, target } of mutations)
target.dispatchEvent(
new CustomEvent(eva, { detail: [attributeName, target.getAttribute(attributeName)] })
);
memo.scope = function memoScope(fun, { signal: signal2, onlyLast } = {}) {
let cache = oCreate();
function memoScope2(...args) {
if (signal2 && signal2.aborted)
return fun.apply(this, args);
let cache_local = onlyLast ? cache : oCreate();
memo_scope.unshift({
cache,
after(key, val) {
return cache_local[key] = val;
}
});
const c = onAbort(options.signal, () => observer.disconnect());
if (c) observer.observe(element, { attributes: true });
return element;
};
const out = fun.apply(this, args);
memo_scope.shift();
cache = cache_local;
return out;
}
memoScope2[memoMark] = true;
memoScope2.clear = () => cache = oCreate();
if (signal2) signal2.addEventListener("abort", memoScope2.clear);
return memoScope2;
};
// src/signals-lib/helpers.js
@ -776,25 +793,18 @@ signal.clear = function(...signals2) {
}
};
var key_reactive = "__dde_reactive";
function cache(store = oCreate()) {
return (key, fun) => hasOwn(store, key) ? store[key] : store[key] = fun();
}
signal.el = function(s, map) {
map = memo.isScope(map) ? map : memo.scope(map, { onlyLast: true });
const mark_start = createElement.mark({ type: "reactive", source: new Defined().compact }, true);
const mark_end = mark_start.end;
const out = enviroment.D.createDocumentFragment();
out.append(mark_start, mark_end);
const { current } = scope;
let cache_shared = oCreate();
const reRenderReactiveElement = (v) => {
if (!mark_start.parentNode || !mark_end.parentNode)
return removeSignalListener(s, reRenderReactiveElement);
const memo = cache(cache_shared);
cache_shared = oCreate();
scope.push(current);
let els = map(v, function useCache(key, fun) {
return cache_shared[key] = memo(key, fun);
});
let els = map(v);
scope.pop();
if (!Array.isArray(els))
els = [els];
@ -814,7 +824,7 @@ signal.el = function(s, map) {
current.host(on.disconnected(
() => (
/*! Clears cached elements for reactive element `S.el` */
cache_shared = {}
map.clear()
)
));
return out;
@ -846,7 +856,7 @@ var key_attributes = "__dde_attributes";
signal.observedAttributes = function(element) {
const store = element[key_attributes] = {};
const attrs = observedAttributes(element, observedAttribute(store));
on.attributeChanged(function attributeChangeToSignal({ detail }) {
on(eva, function attributeChangeToSignal({ detail }) {
/*! This maps attributes to signals (`S.observedAttributes`).
Investigate `__dde_attributes` key of the element. */
const [name, value] = detail;
@ -997,7 +1007,7 @@ export {
elementAttribute,
isSignal,
lifecyclesToEvents,
observedAttributes2 as observedAttributes,
memo,
on,
queue,
registerReactivity,

View File

@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
export const signal: signal;
@ -80,10 +81,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -145,6 +147,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -157,7 +160,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -166,9 +168,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -186,7 +188,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -202,7 +204,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -214,7 +220,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -235,6 +240,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

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80
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@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
declare const signal: signal;
@ -79,10 +80,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -144,6 +146,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -156,7 +159,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -165,9 +167,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -185,7 +187,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -201,7 +203,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -213,7 +219,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -234,6 +239,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

505
dist/esm.js vendored
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@ -1,4 +1,5 @@
// src/helpers.js
var hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);
function isUndef(value) {
return typeof value === "undefined";
}
@ -8,6 +9,9 @@ function isInstance(obj, cls) {
function isProtoFrom(obj, cls) {
return Object.prototype.isPrototypeOf.call(cls, obj);
}
function oCreate(proto = null, p = {}) {
return Object.create(proto, p);
}
function oAssign(...o) {
return Object.assign(...o);
}
@ -21,16 +25,6 @@ function onAbort(signal, listener) {
signal.removeEventListener("abort", listener);
};
}
function observedAttributes(instance, observedAttribute) {
const { observedAttributes: observedAttributes3 = [] } = instance.constructor;
return observedAttributes3.reduce(function(out, name) {
out[kebabToCamel(name)] = observedAttribute(instance, name);
return out;
}, {});
}
function kebabToCamel(name) {
return name.replace(/-./g, (x) => x[1].toUpperCase());
}
// src/signals-lib/common.js
var signals_global = {
@ -68,6 +62,7 @@ var enviroment = {
setDeleteAttr,
ssr: "",
D: globalThis.document,
N: globalThis.Node,
F: globalThis.DocumentFragment,
H: globalThis.HTMLElement,
S: globalThis.SVGElement,
@ -88,6 +83,215 @@ var evc = "dde:connected";
var evd = "dde:disconnected";
var eva = "dde:attributeChanged";
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, enviroment.N)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, enviroment.N)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
// src/dom.js
function queue(promise) {
return enviroment.q(promise);
@ -99,6 +303,7 @@ var scopes = [{
host: (c) => c ? c(enviroment.D.body) : enviroment.D.body,
prevent: true
}];
var store_abort = /* @__PURE__ */ new WeakMap();
var scope = {
/**
* Gets the current scope
@ -115,6 +320,17 @@ var scope = {
return this.current.host;
},
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
get signal() {
const { host } = this;
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
},
/**
* Prevents default behavior in the current scope
* @returns {Object} Current scope context
*/
@ -357,172 +573,8 @@ function setDelete(obj, key, val) {
return Reflect.deleteProperty(obj, key);
}
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, Node)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, Node)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/customElement.js
function customElementRender(target, render, props = observedAttributes2) {
function customElementRender(target, render, props = {}) {
const custom_element = target.host || target;
scope.push({
scope: custom_element,
@ -563,81 +615,40 @@ function wrapMethod(obj, method, apply) {
obj[method] = new Proxy(obj[method] || (() => {
}), { apply });
}
function observedAttributes2(instance) {
return observedAttributes(instance, (i, n) => i.getAttribute(n));
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
// src/memo.js
var memoMark = "__dde_memo";
var memo_scope = [];
function memo(key, generator) {
if (!memo_scope.length) return generator(key);
const k = typeof key === "object" ? JSON.stringify(key) : key;
const [{ cache, after }] = memo_scope;
return after(k, hasOwn(cache, k) ? cache[k] : generator(key));
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
memo.isScope = function(obj) {
return obj[memoMark];
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
var store_abort = /* @__PURE__ */ new WeakMap();
on.disconnectedAsAbort = function(host) {
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
};
var els_attribute_store = /* @__PURE__ */ new WeakSet();
on.attributeChanged = function(listener, options) {
if (typeof options !== "object")
options = {};
return function registerElement(element) {
element.addEventListener(eva, listener, options);
if (element[keyLTE] || els_attribute_store.has(element))
return element;
if (!enviroment.M) return element;
const observer = new enviroment.M(function(mutations) {
for (const { attributeName, target } of mutations)
target.dispatchEvent(
new CustomEvent(eva, { detail: [attributeName, target.getAttribute(attributeName)] })
);
memo.scope = function memoScope(fun, { signal, onlyLast } = {}) {
let cache = oCreate();
function memoScope2(...args) {
if (signal && signal.aborted)
return fun.apply(this, args);
let cache_local = onlyLast ? cache : oCreate();
memo_scope.unshift({
cache,
after(key, val) {
return cache_local[key] = val;
}
});
const c = onAbort(options.signal, () => observer.disconnect());
if (c) observer.observe(element, { attributes: true });
return element;
};
const out = fun.apply(this, args);
memo_scope.shift();
cache = cache_local;
return out;
}
memoScope2[memoMark] = true;
memoScope2.clear = () => cache = oCreate();
if (signal) signal.addEventListener("abort", memoScope2.clear);
return memoScope2;
};
export {
assign,
@ -653,7 +664,7 @@ export {
createElementNS as elNS,
elementAttribute,
lifecyclesToEvents,
observedAttributes2 as observedAttributes,
memo,
on,
queue,
registerReactivity,

80
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@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
declare const signal: signal;
@ -79,10 +80,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -144,6 +146,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -156,7 +159,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -165,9 +167,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -185,7 +187,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -201,7 +203,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -213,7 +219,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -234,6 +239,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

2
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@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
export const signal: signal;
@ -80,10 +81,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -145,6 +147,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -157,7 +160,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -166,9 +168,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -186,7 +188,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -202,7 +204,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -214,7 +220,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -235,6 +240,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

View File

@ -35,7 +35,7 @@ var DDE = (() => {
elementAttribute: () => elementAttribute,
isSignal: () => isSignal,
lifecyclesToEvents: () => lifecyclesToEvents,
observedAttributes: () => observedAttributes2,
memo: () => memo,
on: () => on,
queue: () => queue,
registerReactivity: () => registerReactivity,
@ -78,8 +78,8 @@ var DDE = (() => {
};
}
function observedAttributes(instance, observedAttribute2) {
const { observedAttributes: observedAttributes3 = [] } = instance.constructor;
return observedAttributes3.reduce(function(out, name) {
const { observedAttributes: observedAttributes2 = [] } = instance.constructor;
return observedAttributes2.reduce(function(out, name) {
out[kebabToCamel(name)] = observedAttribute2(instance, name);
return out;
}, {});
@ -137,6 +137,7 @@ var DDE = (() => {
setDeleteAttr,
ssr: "",
D: globalThis.document,
N: globalThis.Node,
F: globalThis.DocumentFragment,
H: globalThis.HTMLElement,
S: globalThis.SVGElement,
@ -157,6 +158,215 @@ var DDE = (() => {
var evd = "dde:disconnected";
var eva = "dde:attributeChanged";
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, enviroment.N)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, enviroment.N)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
// src/dom.js
function queue(promise) {
return enviroment.q(promise);
@ -168,6 +378,7 @@ var DDE = (() => {
host: (c) => c ? c(enviroment.D.body) : enviroment.D.body,
prevent: true
}];
var store_abort = /* @__PURE__ */ new WeakMap();
var scope = {
/**
* Gets the current scope
@ -184,6 +395,17 @@ var DDE = (() => {
return this.current.host;
},
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
get signal() {
const { host } = this;
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
},
/**
* Prevents default behavior in the current scope
* @returns {Object} Current scope context
*/
@ -426,172 +648,8 @@ var DDE = (() => {
return Reflect.deleteProperty(obj, key);
}
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, Node)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, Node)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/customElement.js
function customElementRender(target, render, props = observedAttributes2) {
function customElementRender(target, render, props = {}) {
const custom_element = target.host || target;
scope.push({
scope: custom_element,
@ -632,81 +690,40 @@ var DDE = (() => {
obj[method] = new Proxy(obj[method] || (() => {
}), { apply });
}
function observedAttributes2(instance) {
return observedAttributes(instance, (i, n) => i.getAttribute(n));
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
// src/memo.js
var memoMark = "__dde_memo";
var memo_scope = [];
function memo(key, generator) {
if (!memo_scope.length) return generator(key);
const k = typeof key === "object" ? JSON.stringify(key) : key;
const [{ cache, after }] = memo_scope;
return after(k, hasOwn(cache, k) ? cache[k] : generator(key));
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
memo.isScope = function(obj) {
return obj[memoMark];
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
var store_abort = /* @__PURE__ */ new WeakMap();
on.disconnectedAsAbort = function(host) {
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
};
var els_attribute_store = /* @__PURE__ */ new WeakSet();
on.attributeChanged = function(listener, options) {
if (typeof options !== "object")
options = {};
return function registerElement(element) {
element.addEventListener(eva, listener, options);
if (element[keyLTE] || els_attribute_store.has(element))
return element;
if (!enviroment.M) return element;
const observer = new enviroment.M(function(mutations) {
for (const { attributeName, target } of mutations)
target.dispatchEvent(
new CustomEvent(eva, { detail: [attributeName, target.getAttribute(attributeName)] })
);
memo.scope = function memoScope(fun, { signal: signal2, onlyLast } = {}) {
let cache = oCreate();
function memoScope2(...args) {
if (signal2 && signal2.aborted)
return fun.apply(this, args);
let cache_local = onlyLast ? cache : oCreate();
memo_scope.unshift({
cache,
after(key, val) {
return cache_local[key] = val;
}
});
const c = onAbort(options.signal, () => observer.disconnect());
if (c) observer.observe(element, { attributes: true });
return element;
};
const out = fun.apply(this, args);
memo_scope.shift();
cache = cache_local;
return out;
}
memoScope2[memoMark] = true;
memoScope2.clear = () => cache = oCreate();
if (signal2) signal2.addEventListener("abort", memoScope2.clear);
return memoScope2;
};
// src/signals-lib/helpers.js
@ -822,25 +839,18 @@ var DDE = (() => {
}
};
var key_reactive = "__dde_reactive";
function cache(store = oCreate()) {
return (key, fun) => hasOwn(store, key) ? store[key] : store[key] = fun();
}
signal.el = function(s, map) {
map = memo.isScope(map) ? map : memo.scope(map, { onlyLast: true });
const mark_start = createElement.mark({ type: "reactive", source: new Defined().compact }, true);
const mark_end = mark_start.end;
const out = enviroment.D.createDocumentFragment();
out.append(mark_start, mark_end);
const { current } = scope;
let cache_shared = oCreate();
const reRenderReactiveElement = (v) => {
if (!mark_start.parentNode || !mark_end.parentNode)
return removeSignalListener(s, reRenderReactiveElement);
const memo = cache(cache_shared);
cache_shared = oCreate();
scope.push(current);
let els = map(v, function useCache(key, fun) {
return cache_shared[key] = memo(key, fun);
});
let els = map(v);
scope.pop();
if (!Array.isArray(els))
els = [els];
@ -860,7 +870,7 @@ var DDE = (() => {
current.host(on.disconnected(
() => (
/*! Clears cached elements for reactive element `S.el` */
cache_shared = {}
map.clear()
)
));
return out;
@ -892,7 +902,7 @@ var DDE = (() => {
signal.observedAttributes = function(element) {
const store = element[key_attributes] = {};
const attrs = observedAttributes(element, observedAttribute(store));
on.attributeChanged(function attributeChangeToSignal({ detail }) {
on(eva, function attributeChangeToSignal({ detail }) {
/*! This maps attributes to signals (`S.observedAttributes`).
Investigate `__dde_attributes` key of the element. */
const [name, value] = detail;

View File

@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
export const signal: signal;
@ -80,10 +81,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -145,6 +147,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -157,7 +160,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -166,9 +168,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -186,7 +188,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -202,7 +204,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -214,7 +220,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -235,6 +240,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

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80
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@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
declare const signal: signal;
@ -79,10 +80,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -144,6 +146,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -156,7 +159,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -165,9 +167,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -185,7 +187,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -201,7 +203,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -213,7 +219,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -234,6 +239,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

505
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@ -33,7 +33,7 @@ var DDE = (() => {
elNS: () => createElementNS,
elementAttribute: () => elementAttribute,
lifecyclesToEvents: () => lifecyclesToEvents,
observedAttributes: () => observedAttributes2,
memo: () => memo,
on: () => on,
queue: () => queue,
registerReactivity: () => registerReactivity,
@ -42,6 +42,7 @@ var DDE = (() => {
});
// src/helpers.js
var hasOwn = (...a) => Object.prototype.hasOwnProperty.call(...a);
function isUndef(value) {
return typeof value === "undefined";
}
@ -51,6 +52,9 @@ var DDE = (() => {
function isProtoFrom(obj, cls) {
return Object.prototype.isPrototypeOf.call(cls, obj);
}
function oCreate(proto = null, p = {}) {
return Object.create(proto, p);
}
function oAssign(...o) {
return Object.assign(...o);
}
@ -64,16 +68,6 @@ var DDE = (() => {
signal.removeEventListener("abort", listener);
};
}
function observedAttributes(instance, observedAttribute) {
const { observedAttributes: observedAttributes3 = [] } = instance.constructor;
return observedAttributes3.reduce(function(out, name) {
out[kebabToCamel(name)] = observedAttribute(instance, name);
return out;
}, {});
}
function kebabToCamel(name) {
return name.replace(/-./g, (x) => x[1].toUpperCase());
}
// src/signals-lib/common.js
var signals_global = {
@ -111,6 +105,7 @@ var DDE = (() => {
setDeleteAttr,
ssr: "",
D: globalThis.document,
N: globalThis.Node,
F: globalThis.DocumentFragment,
H: globalThis.HTMLElement,
S: globalThis.SVGElement,
@ -131,6 +126,215 @@ var DDE = (() => {
var evd = "dde:disconnected";
var eva = "dde:attributeChanged";
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, enviroment.N)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, enviroment.N)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
// src/dom.js
function queue(promise) {
return enviroment.q(promise);
@ -142,6 +346,7 @@ var DDE = (() => {
host: (c) => c ? c(enviroment.D.body) : enviroment.D.body,
prevent: true
}];
var store_abort = /* @__PURE__ */ new WeakMap();
var scope = {
/**
* Gets the current scope
@ -158,6 +363,17 @@ var DDE = (() => {
return this.current.host;
},
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
get signal() {
const { host } = this;
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
},
/**
* Prevents default behavior in the current scope
* @returns {Object} Current scope context
*/
@ -400,172 +616,8 @@ var DDE = (() => {
return Reflect.deleteProperty(obj, key);
}
// src/events-observer.js
var c_ch_o = enviroment.M ? connectionsChangesObserverConstructor() : new Proxy({}, {
get() {
return () => {
};
}
});
function connectionsChangesObserverConstructor() {
const store = /* @__PURE__ */ new Map();
let is_observing = false;
const observerListener = (stop2) => function(mutations) {
for (const mutation of mutations) {
if (mutation.type !== "childList") continue;
if (observerAdded(mutation.addedNodes, true)) {
stop2();
continue;
}
if (observerRemoved(mutation.removedNodes, true))
stop2();
}
};
const observer = new enviroment.M(observerListener(stop));
return {
/**
* Creates an observer for a specific element
* @param {Element} element - Element to observe
* @returns {Function} Cleanup function
*/
observe(element) {
const o = new enviroment.M(observerListener(() => {
}));
o.observe(element, { childList: true, subtree: true });
return () => o.disconnect();
},
/**
* Register a connection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for connection event
*/
onConnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.connected.has(listener)) return;
listeners.connected.add(listener);
listeners.length_c += 1;
},
/**
* Unregister a connection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offConnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
if (!ls.connected.has(listener)) return;
ls.connected.delete(listener);
ls.length_c -= 1;
cleanWhenOff(element, ls);
},
/**
* Register a disconnection listener for an element
* @param {Element} element - Element to watch
* @param {Function} listener - Callback for disconnection event
*/
onDisconnected(element, listener) {
start();
const listeners = getElementStore(element);
if (listeners.disconnected.has(listener)) return;
listeners.disconnected.add(listener);
listeners.length_d += 1;
},
/**
* Unregister a disconnection listener
* @param {Element} element - Element being watched
* @param {Function} listener - Callback to remove
*/
offDisconnected(element, listener) {
if (!store.has(element)) return;
const ls = store.get(element);
ls.disconnected.delete(listener);
ls.length_d -= 1;
cleanWhenOff(element, ls);
}
};
function cleanWhenOff(element, ls) {
if (ls.length_c || ls.length_d)
return;
store.delete(element);
stop();
}
function getElementStore(element) {
if (store.has(element)) return store.get(element);
const out = {
connected: /* @__PURE__ */ new WeakSet(),
length_c: 0,
disconnected: /* @__PURE__ */ new WeakSet(),
length_d: 0
};
store.set(element, out);
return out;
}
function start() {
if (is_observing) return;
is_observing = true;
observer.observe(enviroment.D.body, { childList: true, subtree: true });
}
function stop() {
if (!is_observing || store.size) return;
is_observing = false;
observer.disconnect();
}
function requestIdle() {
return new Promise(function(resolve) {
(requestIdleCallback || requestAnimationFrame)(resolve);
});
}
async function collectChildren(element) {
if (store.size > 30)
await requestIdle();
const out = [];
if (!isInstance(element, Node)) return out;
for (const el of store.keys()) {
if (el === element || !isInstance(el, Node)) continue;
if (element.contains(el))
out.push(el);
}
return out;
}
function observerAdded(addedNodes, is_root) {
let out = false;
for (const element of addedNodes) {
if (is_root) collectChildren(element).then(observerAdded);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_c) continue;
element.dispatchEvent(new Event(evc));
ls.connected = /* @__PURE__ */ new WeakSet();
ls.length_c = 0;
if (!ls.length_d) store.delete(element);
out = true;
}
return out;
}
function observerRemoved(removedNodes, is_root) {
let out = false;
for (const element of removedNodes) {
if (is_root) collectChildren(element).then(observerRemoved);
if (!store.has(element)) continue;
const ls = store.get(element);
if (!ls.length_d) continue;
(globalThis.queueMicrotask || setTimeout)(dispatchRemove(element));
out = true;
}
return out;
}
function dispatchRemove(element) {
return () => {
if (element.isConnected) return;
element.dispatchEvent(new Event(evd));
store.delete(element);
};
}
}
// src/customElement.js
function customElementRender(target, render, props = observedAttributes2) {
function customElementRender(target, render, props = {}) {
const custom_element = target.host || target;
scope.push({
scope: custom_element,
@ -606,81 +658,40 @@ var DDE = (() => {
obj[method] = new Proxy(obj[method] || (() => {
}), { apply });
}
function observedAttributes2(instance) {
return observedAttributes(instance, (i, n) => i.getAttribute(n));
}
// src/events.js
function dispatchEvent(name, options, host) {
if (typeof options === "function") {
host = options;
options = null;
}
if (!options) options = {};
return function dispatch(element, ...d) {
if (host) {
d.unshift(element);
element = typeof host === "function" ? host() : host;
}
const event = d.length ? new CustomEvent(name, oAssign({ detail: d[0] }, options)) : new Event(name, options);
return element.dispatchEvent(event);
};
// src/memo.js
var memoMark = "__dde_memo";
var memo_scope = [];
function memo(key, generator) {
if (!memo_scope.length) return generator(key);
const k = typeof key === "object" ? JSON.stringify(key) : key;
const [{ cache, after }] = memo_scope;
return after(k, hasOwn(cache, k) ? cache[k] : generator(key));
}
function on(event, listener, options) {
return function registerElement(element) {
element.addEventListener(event, listener, options);
return element;
};
}
var lifeOptions = (obj) => oAssign({}, typeof obj === "object" ? obj : null, { once: true });
on.connected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evc, listener, options);
if (element[keyLTE]) return element;
if (element.isConnected) return element.dispatchEvent(new Event(evc)), element;
const c = onAbort(options.signal, () => c_ch_o.offConnected(element, listener));
if (c) c_ch_o.onConnected(element, listener);
return element;
};
memo.isScope = function(obj) {
return obj[memoMark];
};
on.disconnected = function(listener, options) {
options = lifeOptions(options);
return function registerElement(element) {
element.addEventListener(evd, listener, options);
if (element[keyLTE]) return element;
const c = onAbort(options.signal, () => c_ch_o.offDisconnected(element, listener));
if (c) c_ch_o.onDisconnected(element, listener);
return element;
};
};
var store_abort = /* @__PURE__ */ new WeakMap();
on.disconnectedAsAbort = function(host) {
if (store_abort.has(host)) return store_abort.get(host);
const a = new AbortController();
store_abort.set(host, a);
host(on.disconnected(() => a.abort()));
return a.signal;
};
var els_attribute_store = /* @__PURE__ */ new WeakSet();
on.attributeChanged = function(listener, options) {
if (typeof options !== "object")
options = {};
return function registerElement(element) {
element.addEventListener(eva, listener, options);
if (element[keyLTE] || els_attribute_store.has(element))
return element;
if (!enviroment.M) return element;
const observer = new enviroment.M(function(mutations) {
for (const { attributeName, target } of mutations)
target.dispatchEvent(
new CustomEvent(eva, { detail: [attributeName, target.getAttribute(attributeName)] })
);
memo.scope = function memoScope(fun, { signal, onlyLast } = {}) {
let cache = oCreate();
function memoScope2(...args) {
if (signal && signal.aborted)
return fun.apply(this, args);
let cache_local = onlyLast ? cache : oCreate();
memo_scope.unshift({
cache,
after(key, val) {
return cache_local[key] = val;
}
});
const c = onAbort(options.signal, () => observer.disconnect());
if (c) observer.observe(element, { attributes: true });
return element;
};
const out = fun.apply(this, args);
memo_scope.shift();
cache = cache_local;
return out;
}
memoScope2[memoMark] = true;
memoScope2.clear = () => cache = oCreate();
if (signal) signal.addEventListener("abort", memoScope2.clear);
return memoScope2;
};
return __toCommonJS(index_exports);
})();

80
dist/iife.min.d.ts vendored
View File

@ -18,6 +18,7 @@ export type Actions<V> = Record<string | SymbolOnclear, Action<V>>;
export type OnListenerOptions = Pick<AddEventListenerOptions, "signal"> & {
first_time?: boolean;
};
export type SElement = Node | Element | DocumentFragment | ddeHTMLElement | ddeSVGElement | ddeDocumentFragment;
export interface signal {
_: Symbol;
/**
@ -63,7 +64,7 @@ export interface signal {
* S.el(listS, list=> list.map(li=> el("li", li)));
* ```
* */
el<S extends any>(signal: Signal<S, any>, el: (v: S) => Element | Element[] | DocumentFragment): DocumentFragment;
el<S extends any>(signal: Signal<S, any>, el: (v: S) => SElement | SElement[]): DocumentFragment;
observedAttributes(custom_element: HTMLElement): Record<string, Signal<string, {}>>;
}
declare const signal: signal;
@ -79,10 +80,11 @@ export type CustomElementTagNameMap = {
export type SupportedElement = HTMLElementTagNameMap[keyof HTMLElementTagNameMap] | SVGElementTagNameMap[keyof SVGElementTagNameMap] | MathMLElementTagNameMap[keyof MathMLElementTagNameMap] | CustomElementTagNameMap[keyof CustomElementTagNameMap];
declare global {
type ddeComponentAttributes = Record<any, any> | undefined;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El) => any;
type ddeElementAddon<El extends SupportedElement | DocumentFragment | Node> = (element: El, ...rest: any) => any;
type ddeString = string | Signal<string, {}>;
type ddeStringable = ddeString | number | Signal<number, {}>;
}
export type Host<EL extends SupportedElement> = (...addons: ddeElementAddon<EL>[]) => EL;
export type PascalCase = `${Capitalize<string>}${string}`;
export type AttrsModified = {
/**
@ -144,6 +146,7 @@ export namespace el {
host?: "this" | "parentElement";
}, is_open?: boolean): Comment;
}
export function chainableAppend<EL extends SupportedElement>(el: EL): EL | ddeHTMLElement;
export function el<A extends ddeComponentAttributes, EL extends SupportedElement | ddeDocumentFragment>(component: (attr: A, ...rest: any[]) => EL, attrs?: NoInfer<A>, ...addons: ddeElementAddon<EL>[]): EL extends ddeHTMLElementTagNameMap[keyof ddeHTMLElementTagNameMap] ? EL : (EL extends ddeDocumentFragment ? EL : ddeHTMLElement);
export function el<A extends {
textContent: ddeStringable;
@ -156,7 +159,6 @@ export function elNS(namespace: "http://www.w3.org/1998/Math/MathML"): <TAG exte
[key in keyof EL]: EL[key] | Signal<EL[key], {}> | string | number | boolean;
}>, ...addons: ddeElementAddon<NoInfer<EL>>[]) => ddeMathMLElement;
export function elNS(namespace: string): (tag_name: string, attrs?: string | ddeStringable | Record<string, any>, ...addons: ddeElementAddon<SupportedElement>[]) => SupportedElement;
export function chainableAppend<EL extends SupportedElement>(el: EL): EL;
/** Simulate slots for ddeComponents */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(root: EL): EL;
/**
@ -165,9 +167,9 @@ export function simulateSlots<EL extends SupportedElement | DocumentFragment>(ro
* @param body Body of the custom element
* */
export function simulateSlots<EL extends SupportedElement | DocumentFragment>(el: HTMLElement, body: EL): EL;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, element: SupportedElement): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, host: Host<SupportedElement>): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options?: EventInit): (element: SupportedElement, data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, element: SupportedElement | (() => SupportedElement)): (data?: any) => void;
declare function dispatchEvent$1(name: keyof DocumentEventMap | string, options: EventInit | null, host: Host<SupportedElement>): (data?: any) => void;
export interface On {
/** Listens to the DOM event. See {@link Document.addEventListener} */
<Event extends keyof DocumentEventMap, EE extends ddeElementAddon<SupportedElement> = ddeElementAddon<HTMLElement>>(type: Event, listener: (this: EE extends ddeElementAddon<infer El> ? El : never, ev: DocumentEventMap[Event]) => any, options?: AddEventListenerOptions): EE;
@ -185,7 +187,7 @@ export interface On {
export const on: On;
export type Scope = {
scope: Node | Function | Object;
host: ddeElementAddon<any>;
host: Host<SupportedElement>;
custom_element: false | HTMLElement;
prevent: boolean;
};
@ -201,7 +203,11 @@ export const scope: {
* It can be also used to register Addon(s) (functions to be called when component is initized)
* — `scope.host(on.connected(console.log))`.
* */
host: (...addons: ddeElementAddon<SupportedElement>[]) => HTMLElement;
host: Host<SupportedElement>;
/**
* Creates/gets an AbortController that triggers when the element disconnects
* */
signal: AbortSignal;
state: Scope[];
/** Adds new child scope. All attributes are inherited by default. */
push(scope?: Partial<Scope>): ReturnType<Array<Scope>["push"]>;
@ -213,7 +219,6 @@ export const scope: {
export function customElementRender<EL extends HTMLElement, P extends any = Record<string, string | Signal<string, {}>>>(target: ShadowRoot | EL, render: (props: P) => SupportedElement | DocumentFragment, props?: P | ((el: EL) => P)): EL;
export function customElementWithDDE<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function lifecyclesToEvents<EL extends (new () => HTMLElement)>(custom_element: EL): EL;
export function observedAttributes(custom_element: HTMLElement): Record<string, string>;
/**
* This is used primarly for server side rendering. To be sure that all async operations
* are finished before the page is sent to the client.
@ -234,6 +239,65 @@ export function observedAttributes(custom_element: HTMLElement): Record<string,
* ```
* */
export function queue(promise?: Promise<unknown>): Promise<unknown>;
/**
* Memoization utility for caching DOM elements to improve performance.
* Used to prevent unnecessary recreation of elements when rendering lists or complex components.
*
* @param key - Unique identifier for the element (usually an ID or unique value)
* @param generator - Function that creates the element
* @returns The cached element if the key exists, otherwise the result of the generator function
*
* @example
* ```ts
* // Within S.el for list rendering
* S.el(itemsSignal, (items, memo) =>
* el("ul").append(
* ...items.map(item =>
* memo(item.id, () => el(ItemComponent, item))
* )
* )
* )
* ```
*/
export function memo<T>(key: string | number | object, generator: (key: any) => T): T;
/**
* Memo namespace containing utility functions for memoization.
*/
export namespace memo {
/**
* Checks if an object is a memo scope.
* @param obj - The object to check
* @returns True if the object is a memo scope
*/
export function isScope(obj: any): boolean;
/**
* Creates a memoized function with optional cleanup support.
*
* @param fun - The function to memoize
* @param options - Configuration options
* @param options.signal - AbortSignal for cleanup
* @param options.onlyLast - When true, only keeps the cache from the most recent call
* @returns A memoized version of the function with a .clear() method
*
* @example
* ```ts
* const renderItems = memo.scope(function(items) {
* return items.map(item =>
* memo(item.id, () => el("div", item.name))
* );
* }, {
* signal: controller.signal,
* onlyLast: true
* });
* ```
*/
export function scope<F extends Function>(fun: F, options?: {
signal?: AbortSignal;
onlyLast?: boolean;
}): F & {
clear: () => void;
};
}
/* TypeScript MEH */
declare global {
type ddeAppend<el> = (...nodes: (Node | string)[]) => el;

2
dist/iife.min.js vendored

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