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✨ Signals finalization

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This commit is contained in:
Jan Andrle 2023-09-07 17:35:23 +02:00
parent 55a8f14b6b
commit 6fae2fc4e6
Signed by: jaandrle
GPG Key ID: B3A25AED155AFFAB
5 changed files with 215 additions and 161 deletions
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149
dist/dde-with-signals.js vendored
View File

@ -7,7 +7,7 @@
}
// src/signals-common.js
var m = {
var b = {
isReactiveAtrribute(e, t) {
return !1;
},
@ -21,11 +21,11 @@
return null;
}
};
function S(e, t = !0) {
return t ? Object.assign(m, e) : (Object.setPrototypeOf(e, m), e);
function C(e, t = !0) {
return t ? Object.assign(b, e) : (Object.setPrototypeOf(e, b), e);
}
function j(e) {
return m.isPrototypeOf(e) && e !== m ? e : m;
return b.isPrototypeOf(e) && e !== b ? e : b;
}
// src/dom.js
@ -65,41 +65,41 @@
if (!t.length)
return e;
let r = e instanceof SVGElement, o = (r ? z : P).bind(null, e, "Attribute");
return Object.entries(Object.assign({}, ...t)).forEach(function a([u, i]) {
n.isReactiveAtrribute(i, u) && (i = n.processReactiveAttribute(e, u, i, a));
let [p] = u;
return Object.entries(Object.assign({}, ...t)).forEach(function a([f, i]) {
n.isReactiveAtrribute(i, f) && (i = n.processReactiveAttribute(e, f, i, a));
let [p] = f;
if (p === "=")
return o(u.slice(1), i);
return o(f.slice(1), i);
if (p === ".")
return L(e, u.slice(1), i);
return L(e, f.slice(1), i);
if (typeof i == "object")
switch (u) {
switch (f) {
case "style":
return w(i, P.bind(null, e.style, "Property"));
return y(i, P.bind(null, e.style, "Property"));
case "dataset":
return w(i, L.bind(null, e.dataset));
return y(i, L.bind(null, e.dataset));
case "ariaset":
return w(i, (E, v) => o("aria-" + E, v));
return y(i, (E, v) => o("aria-" + E, v));
case "classList":
return k(e, i);
default:
return Reflect.set(e, u, i);
return Reflect.set(e, f, i);
}
if (/(aria|data)([A-Z])/.test(u))
return u = u.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase(), o(u, i);
switch (u) {
if (/(aria|data)([A-Z])/.test(f))
return f = f.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase(), o(f, i);
switch (f) {
case "xlink:href":
return o(u, i, "http://www.w3.org/1999/xlink");
return o(f, i, "http://www.w3.org/1999/xlink");
case "textContent":
if (!r)
break;
return e.appendChild(document.createTextNode(i));
}
return q(e, u) ? L(e, u, i) : o(u, i);
return q(e, f) ? L(e, f, i) : o(f, i);
}), e;
}
function k(e, t) {
return typeof t != "object" || w(
return typeof t != "object" || y(
t,
(n, r) => e.classList.toggle(n, r === -1 ? void 0 : !!r)
), e;
@ -114,8 +114,8 @@
let r = e.nodeName + "," + t;
if (x.has(r))
return x.get(r);
let [o, a, u] = T(e, t), i = !N(o.set);
return (!i || a) && x.set(u === HTMLElement.prototype ? n : r, i), i;
let [o, a, f] = T(e, t), i = !N(o.set);
return (!i || a) && x.set(f === HTMLElement.prototype ? n : r, i), i;
}
function T(e, t, n = 0) {
if (e = Object.getPrototypeOf(e), !e)
@ -123,7 +123,7 @@
let r = Object.getOwnPropertyDescriptor(e, t);
return r ? [r, n, e] : T(e, t, n + 1);
}
function w(e, t) {
function y(e, t) {
return Object.entries(e).forEach(([n, r]) => t(n, r));
}
function N(e) {
@ -143,15 +143,15 @@
function D(e, t, n) {
return (r) => (r.addEventListener(e, t, n), r);
}
var y = I();
var w = I();
D.connected = function(e, t) {
return function(r) {
y.onConnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => y.offConnected(r, e));
w.onConnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => w.offConnected(r, e));
};
};
D.disconnected = function(e, t) {
return function(r) {
y.onDisconnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => y.offDisconnected(r, e));
w.onDisconnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => w.offDisconnected(r, e));
};
};
function I() {
@ -159,10 +159,10 @@
for (let s of c)
if (s.type === "childList") {
if (E(s.addedNodes, !0)) {
u();
f();
continue;
}
v(s.removedNodes, !0) && u();
v(s.removedNodes, !0) && f();
}
});
return {
@ -172,8 +172,8 @@
offConnected(c, s) {
if (!e.has(c))
return;
let f = e.get(c), d = f.connected;
d.splice(d.indexOf(s), 1), r(c, f);
let u = e.get(c), d = u.connected;
d.splice(d.indexOf(s), 1), r(c, u);
},
onDisconnected(c, s) {
a(), o(c).disconnected.push(s);
@ -181,12 +181,12 @@
offDisconnected(c, s) {
if (!e.has(c))
return;
let f = e.get(c), d = f.disconnected;
d.splice(d.indexOf(s), 1), r(c, f);
let u = e.get(c), d = u.disconnected;
d.splice(d.indexOf(s), 1), r(c, u);
}
};
function r(c, s) {
s.connected.length || s.disconnect.length || (e.delete(c), u());
s.connected.length || s.disconnect.length || (e.delete(c), f());
}
function o(c) {
if (e.has(c))
@ -197,7 +197,7 @@
function a() {
t || (t = !0, n.observe(document.body, { childList: !0, subtree: !0 }));
}
function u() {
function f() {
!t || e.size || (t = !1, n.disconnect());
}
function i() {
@ -210,24 +210,24 @@
let s = [];
if (!(c instanceof Node))
return s;
for (let f of e.keys())
f === c || !(f instanceof Node) || c.contains(f) && s.push(f);
for (let u of e.keys())
u === c || !(u instanceof Node) || c.contains(u) && s.push(u);
return s;
}
function E(c, s) {
for (let f of c) {
if (s && p(f).then(E), !e.has(f))
for (let u of c) {
if (s && p(u).then(E), !e.has(u))
return !1;
let d = e.get(f);
return d.connected.forEach((C) => C(f)), d.connected.length = 0, d.disconnected.length || e.delete(f), !0;
let d = e.get(u);
return d.connected.forEach((S) => S(u)), d.connected.length = 0, d.disconnected.length || e.delete(u), !0;
}
}
function v(c, s) {
for (let f of c) {
if (s && p(f).then(v), !e.has(f))
for (let u of c) {
if (s && p(u).then(v), !e.has(u))
return !1;
let d = e.get(f);
return d.disconnected.forEach((C) => C(f)), d.connected.length = 0, d.disconnected.length = 0, e.delete(f), !0;
let d = e.get(u);
return d.disconnected.forEach((S) => S(u)), d.connected.length = 0, d.disconnected.length = 0, e.delete(u), !0;
}
}
}
@ -241,25 +241,23 @@
});
// src/signals-lib.js
var l = Symbol.for("signal");
function b(e) {
var l = Symbol.for("Signal");
function R(e) {
try {
return Reflect.has(e, l);
} catch {
return !1;
}
}
function R(e, t) {
function m(e, t) {
if (typeof e != "function")
return M(e, t);
if (b(e))
if (R(e))
return e;
let n = M();
return $(() => n(e())), n;
return F(() => n(e())), n;
}
R.action = function(e, t, ...n) {
if (!b(e))
throw new Error(`'${e}' is not a signal!`);
m.action = function(e, t, ...n) {
let r = e[l], { actions: o } = r;
if (!o || !Reflect.has(o, t))
throw new Error(`'${e}' has no action with name '${t}'!`);
@ -267,32 +265,41 @@
return Reflect.deleteProperty(r, "skip");
r.listeners.forEach((a) => a(r.value));
};
R.on = function e(t, n, r) {
m.on = function e(t, n, r = {}) {
let { signal: o } = r;
if (!(o && o.aborted)) {
if (Array.isArray(t))
return t.forEach((o) => e(o, n, r));
_(t, n), r && r.signal && r.signal.addEventListener("abort", () => F(t, n));
return t.forEach((a) => e(a, n, r));
_(t, n), o && o.addEventListener("abort", () => $(t, n));
}
};
R.clear = function(...e) {
for (let t of e)
t[l].listeners.clear(), Reflect.deleteProperty(t, l);
m.symbols = {
signal: l,
onclear: Symbol.for("Signal.onclear")
};
m.clear = function(...e) {
for (let t of e) {
let n = t[l], { onclear: r } = m.symbols;
n.actions && n.actions[r] && n.actions[r].call(n), n.listeners.clear(), Reflect.deleteProperty(t, l);
}
};
var H = {
isReactiveAtrribute(e, t) {
return b(e);
return R(e);
},
isTextContent(e) {
return h(e) === "string" || b(e) && h(U(e)) === "string";
return h(e) === "string" || R(e) && h(U(e)) === "string";
},
processReactiveAttribute(e, t, n, r) {
return _(n, (o) => r([t, o])), n();
},
reactiveElement(e, t) {
let n = document.createComment("<> #reactive"), r = document.createComment("</> #reactive"), o = document.createDocumentFragment();
let n = document.createComment("<#reactive>"), r = document.createComment("</#reactive>"), o = document.createDocumentFragment();
o.append(n, r);
let a = (u) => {
let a = (f) => {
if (!n.parentNode || !r.parentNode)
return F(e, a);
let i = t(u);
return $(e, a);
let i = t(f);
Array.isArray(i) || (i = [i]);
let p = n;
for (; (p = n.nextSibling) !== r; )
@ -319,7 +326,7 @@
}, Object.setPrototypeOf(e[l], W), e;
}
var g = [];
function $(e) {
function F(e) {
let t = function() {
g.push(t), e(), g.pop();
};
@ -347,25 +354,25 @@
function _(e, t) {
return e[l].listeners.add(t);
}
function F(e, t) {
function $(e, t) {
return e[l].listeners.delete(t);
}
// src/signals.js
S(H);
C(H);
globalThis.dde= {
S: R,
S: m,
assign: A,
classListDeclartive: k,
createElement: ee,
el: ee,
empty: te,
isSignal: b,
isSignal: R,
namespace: Y,
on: D,
registerReactivity: S,
watch: $
registerReactivity: C,
watch: F
};
})();

149
dist/esm-with-signals.js vendored
View File

@ -5,7 +5,7 @@ function h(e) {
}
// src/signals-common.js
var m = {
var b = {
isReactiveAtrribute(e, t) {
return !1;
},
@ -19,11 +19,11 @@ var m = {
return null;
}
};
function S(e, t = !0) {
return t ? Object.assign(m, e) : (Object.setPrototypeOf(e, m), e);
function C(e, t = !0) {
return t ? Object.assign(b, e) : (Object.setPrototypeOf(e, b), e);
}
function j(e) {
return m.isPrototypeOf(e) && e !== m ? e : m;
return b.isPrototypeOf(e) && e !== b ? e : b;
}
// src/dom.js
@ -63,41 +63,41 @@ function A(e, ...t) {
if (!t.length)
return e;
let r = e instanceof SVGElement, o = (r ? z : P).bind(null, e, "Attribute");
return Object.entries(Object.assign({}, ...t)).forEach(function a([u, i]) {
n.isReactiveAtrribute(i, u) && (i = n.processReactiveAttribute(e, u, i, a));
let [p] = u;
return Object.entries(Object.assign({}, ...t)).forEach(function a([f, i]) {
n.isReactiveAtrribute(i, f) && (i = n.processReactiveAttribute(e, f, i, a));
let [p] = f;
if (p === "=")
return o(u.slice(1), i);
return o(f.slice(1), i);
if (p === ".")
return L(e, u.slice(1), i);
return L(e, f.slice(1), i);
if (typeof i == "object")
switch (u) {
switch (f) {
case "style":
return w(i, P.bind(null, e.style, "Property"));
return y(i, P.bind(null, e.style, "Property"));
case "dataset":
return w(i, L.bind(null, e.dataset));
return y(i, L.bind(null, e.dataset));
case "ariaset":
return w(i, (E, v) => o("aria-" + E, v));
return y(i, (E, v) => o("aria-" + E, v));
case "classList":
return k(e, i);
default:
return Reflect.set(e, u, i);
return Reflect.set(e, f, i);
}
if (/(aria|data)([A-Z])/.test(u))
return u = u.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase(), o(u, i);
switch (u) {
if (/(aria|data)([A-Z])/.test(f))
return f = f.replace(/([a-z])([A-Z])/g, "$1-$2").toLowerCase(), o(f, i);
switch (f) {
case "xlink:href":
return o(u, i, "http://www.w3.org/1999/xlink");
return o(f, i, "http://www.w3.org/1999/xlink");
case "textContent":
if (!r)
break;
return e.appendChild(document.createTextNode(i));
}
return q(e, u) ? L(e, u, i) : o(u, i);
return q(e, f) ? L(e, f, i) : o(f, i);
}), e;
}
function k(e, t) {
return typeof t != "object" || w(
return typeof t != "object" || y(
t,
(n, r) => e.classList.toggle(n, r === -1 ? void 0 : !!r)
), e;
@ -112,8 +112,8 @@ function q(e, t) {
let r = e.nodeName + "," + t;
if (x.has(r))
return x.get(r);
let [o, a, u] = T(e, t), i = !N(o.set);
return (!i || a) && x.set(u === HTMLElement.prototype ? n : r, i), i;
let [o, a, f] = T(e, t), i = !N(o.set);
return (!i || a) && x.set(f === HTMLElement.prototype ? n : r, i), i;
}
function T(e, t, n = 0) {
if (e = Object.getPrototypeOf(e), !e)
@ -121,7 +121,7 @@ function T(e, t, n = 0) {
let r = Object.getOwnPropertyDescriptor(e, t);
return r ? [r, n, e] : T(e, t, n + 1);
}
function w(e, t) {
function y(e, t) {
return Object.entries(e).forEach(([n, r]) => t(n, r));
}
function N(e) {
@ -141,15 +141,15 @@ function L(e, t, n) {
function D(e, t, n) {
return (r) => (r.addEventListener(e, t, n), r);
}
var y = I();
var w = I();
D.connected = function(e, t) {
return function(r) {
y.onConnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => y.offConnected(r, e));
w.onConnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => w.offConnected(r, e));
};
};
D.disconnected = function(e, t) {
return function(r) {
y.onDisconnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => y.offDisconnected(r, e));
w.onDisconnected(r, e), t && t.signal && t.signal.addEventListener("abort", () => w.offDisconnected(r, e));
};
};
function I() {
@ -157,10 +157,10 @@ function I() {
for (let s of c)
if (s.type === "childList") {
if (E(s.addedNodes, !0)) {
u();
f();
continue;
}
v(s.removedNodes, !0) && u();
v(s.removedNodes, !0) && f();
}
});
return {
@ -170,8 +170,8 @@ function I() {
offConnected(c, s) {
if (!e.has(c))
return;
let f = e.get(c), d = f.connected;
d.splice(d.indexOf(s), 1), r(c, f);
let u = e.get(c), d = u.connected;
d.splice(d.indexOf(s), 1), r(c, u);
},
onDisconnected(c, s) {
a(), o(c).disconnected.push(s);
@ -179,12 +179,12 @@ function I() {
offDisconnected(c, s) {
if (!e.has(c))
return;
let f = e.get(c), d = f.disconnected;
d.splice(d.indexOf(s), 1), r(c, f);
let u = e.get(c), d = u.disconnected;
d.splice(d.indexOf(s), 1), r(c, u);
}
};
function r(c, s) {
s.connected.length || s.disconnect.length || (e.delete(c), u());
s.connected.length || s.disconnect.length || (e.delete(c), f());
}
function o(c) {
if (e.has(c))
@ -195,7 +195,7 @@ function I() {
function a() {
t || (t = !0, n.observe(document.body, { childList: !0, subtree: !0 }));
}
function u() {
function f() {
!t || e.size || (t = !1, n.disconnect());
}
function i() {
@ -208,24 +208,24 @@ function I() {
let s = [];
if (!(c instanceof Node))
return s;
for (let f of e.keys())
f === c || !(f instanceof Node) || c.contains(f) && s.push(f);
for (let u of e.keys())
u === c || !(u instanceof Node) || c.contains(u) && s.push(u);
return s;
}
function E(c, s) {
for (let f of c) {
if (s && p(f).then(E), !e.has(f))
for (let u of c) {
if (s && p(u).then(E), !e.has(u))
return !1;
let d = e.get(f);
return d.connected.forEach((C) => C(f)), d.connected.length = 0, d.disconnected.length || e.delete(f), !0;
let d = e.get(u);
return d.connected.forEach((S) => S(u)), d.connected.length = 0, d.disconnected.length || e.delete(u), !0;
}
}
function v(c, s) {
for (let f of c) {
if (s && p(f).then(v), !e.has(f))
for (let u of c) {
if (s && p(u).then(v), !e.has(u))
return !1;
let d = e.get(f);
return d.disconnected.forEach((C) => C(f)), d.connected.length = 0, d.disconnected.length = 0, e.delete(f), !0;
let d = e.get(u);
return d.disconnected.forEach((S) => S(u)), d.connected.length = 0, d.disconnected.length = 0, e.delete(u), !0;
}
}
}
@ -239,25 +239,23 @@ function I() {
});
// src/signals-lib.js
var l = Symbol.for("signal");
function b(e) {
var l = Symbol.for("Signal");
function R(e) {
try {
return Reflect.has(e, l);
} catch {
return !1;
}
}
function R(e, t) {
function m(e, t) {
if (typeof e != "function")
return M(e, t);
if (b(e))
if (R(e))
return e;
let n = M();
return $(() => n(e())), n;
return F(() => n(e())), n;
}
R.action = function(e, t, ...n) {
if (!b(e))
throw new Error(`'${e}' is not a signal!`);
m.action = function(e, t, ...n) {
let r = e[l], { actions: o } = r;
if (!o || !Reflect.has(o, t))
throw new Error(`'${e}' has no action with name '${t}'!`);
@ -265,32 +263,41 @@ R.action = function(e, t, ...n) {
return Reflect.deleteProperty(r, "skip");
r.listeners.forEach((a) => a(r.value));
};
R.on = function e(t, n, r) {
m.on = function e(t, n, r = {}) {
let { signal: o } = r;
if (!(o && o.aborted)) {
if (Array.isArray(t))
return t.forEach((o) => e(o, n, r));
_(t, n), r && r.signal && r.signal.addEventListener("abort", () => F(t, n));
return t.forEach((a) => e(a, n, r));
_(t, n), o && o.addEventListener("abort", () => $(t, n));
}
};
R.clear = function(...e) {
for (let t of e)
t[l].listeners.clear(), Reflect.deleteProperty(t, l);
m.symbols = {
signal: l,
onclear: Symbol.for("Signal.onclear")
};
m.clear = function(...e) {
for (let t of e) {
let n = t[l], { onclear: r } = m.symbols;
n.actions && n.actions[r] && n.actions[r].call(n), n.listeners.clear(), Reflect.deleteProperty(t, l);
}
};
var H = {
isReactiveAtrribute(e, t) {
return b(e);
return R(e);
},
isTextContent(e) {
return h(e) === "string" || b(e) && h(U(e)) === "string";
return h(e) === "string" || R(e) && h(U(e)) === "string";
},
processReactiveAttribute(e, t, n, r) {
return _(n, (o) => r([t, o])), n();
},
reactiveElement(e, t) {
let n = document.createComment("<> #reactive"), r = document.createComment("</> #reactive"), o = document.createDocumentFragment();
let n = document.createComment("<#reactive>"), r = document.createComment("</#reactive>"), o = document.createDocumentFragment();
o.append(n, r);
let a = (u) => {
let a = (f) => {
if (!n.parentNode || !r.parentNode)
return F(e, a);
let i = t(u);
return $(e, a);
let i = t(f);
Array.isArray(i) || (i = [i]);
let p = n;
for (; (p = n.nextSibling) !== r; )
@ -317,7 +324,7 @@ function Z(e, t, n) {
}, Object.setPrototypeOf(e[l], W), e;
}
var g = [];
function $(e) {
function F(e) {
let t = function() {
g.push(t), e(), g.pop();
};
@ -345,22 +352,22 @@ function U(e) {
function _(e, t) {
return e[l].listeners.add(t);
}
function F(e, t) {
function $(e, t) {
return e[l].listeners.delete(t);
}
// src/signals.js
S(H);
C(H);
export {
R as S,
m as S,
A as assign,
k as classListDeclartive,
ee as createElement,
ee as el,
te as empty,
b as isSignal,
R as isSignal,
Y as namespace,
D as on,
S as registerReactivity,
$ as watch
C as registerReactivity,
F as watch
};

34
src/signals-lib.js
View File

@ -1,4 +1,4 @@
export const mark= Symbol.for("signal");
export const mark= Symbol.for("Signal");
export function isSignal(candidate){
try{ return Reflect.has(candidate, mark); }
@ -12,10 +12,9 @@ export function S(value, actions){
const out= create();
watch(()=> out(value()));
return out;
//TODO is auto remove if used for args, if external listener needs also S.clear
}
S.action= function(signal, name, ...a){
if(!isSignal(signal))
throw new Error(`'${signal}' is not a signal!`);
const s= signal[mark], { actions }= s;
if(!actions || !Reflect.has(actions, name))
throw new Error(`'${signal}' has no action with name '${name}'!`);
@ -23,16 +22,25 @@ S.action= function(signal, name, ...a){
if(s.skip) return Reflect.deleteProperty(s, "skip");
s.listeners.forEach(l=> l(s.value));
};
S.on= function on(signals, listener, options){
S.on= function on(signals, listener, options= {}){
const { signal: as }= options;
if(as && as.aborted) return;
if(Array.isArray(signals)) return signals.forEach(s=> on(s, listener, options));
addSignalListener(signals, listener);
if(options && options.signal)
options.signal.addEventListener("abort", ()=> removeSignalListener(signals, listener));
if(as) as.addEventListener("abort", ()=> removeSignalListener(signals, listener));
//TODO cleanup when signal removed (also TODO)
};
S.symbols= {
signal: mark,
onclear: Symbol.for("Signal.onclear")
};
S.clear= function(...signals){
for(const signal of signals){
signal[mark].listeners.clear();
const s= signal[mark];
const { onclear }= S.symbols;
if(s.actions && s.actions[onclear])
s.actions[onclear].call(s);
s.listeners.clear();
Reflect.deleteProperty(signal, mark);
}
};
@ -48,13 +56,13 @@ export const signals_config= {
return attrS();
},
reactiveElement(signal, map){
const mark_start= document.createComment("<> #reactive");
const mark_end= document.createComment("</> #reactive");
const mark_start= document.createComment("<#reactive>");
const mark_end= document.createComment("</#reactive>");
const out= document.createDocumentFragment();
out.append(mark_start, mark_end);
const toEls= v=> {
const reRenderReactiveElement= v=> {
if(!mark_start.parentNode || !mark_end.parentNode)
return removeSignalListener(signal, toEls);
return removeSignalListener(signal, reRenderReactiveElement);
let els= map(v);
if(!Array.isArray(els))
els= [ els ];
@ -63,8 +71,8 @@ export const signals_config= {
el_r.remove();
mark_start.after(...els);
};
addSignalListener(signal, toEls);
toEls(signal());
addSignalListener(signal, reRenderReactiveElement);
reRenderReactiveElement(signal());
return out;
}
};

32
src/signals.d.ts vendored
View File

@ -1,8 +1,34 @@
export type Signal<V, A>= (set?: V)=> V & A;
type Action<V>= (this: { value: V }, ...a: any[])=> typeof S._ | void;
type SymbolOnclear= Symbol;
type SymbolSignal= Symbol;
type Actions<V>= Record<string, Action<V>>;
interface S {
_: Symbol
/**
* Simple example:
* ```js
* const hello= S("Hello Signal");
* ```
* …simple todo signal:
* ```js
* const todos= S([], {
* add(v){ this.value.push(S(v)); },
* remove(i){ this.value.splice(i, 1); },
* [S.symbols.onclear](){ S.clear(...this.value); },
* });
* ```
* …computed signal:
* ```js
* const name= S("Jan");
* const surname= S("Andrle");
* const fullname= S(()=> name()+" "+surname());
* ```
* @param value Initial signal value. Or function computing value from other signals.
* @param actions Use to define actions on the signal. Such as add item to the array.
* There is also a reserved function `S.symbol.onclear` which is called when the signal is cleared
* by `S.clear`.
* */
<V, A extends Actions<V>>(value: V, actions?: A): Signal<V, A>;
action<S extends Signal<any, Actions<any>>, A extends (S extends Signal<any, infer A> ? A : never), N extends keyof A>(
signal: S,
@ -10,6 +36,10 @@ interface S {
...params: A[N] extends (...args: infer P)=> any ? P : never
): void;
clear(...signals: Signal<any, any>): void;
on<T>(signal: Signal<T, any>, onchange: (a: T)=> void, options?: AddEventListenerOptions): void
on<T>(signal: Signal<T, any>, onchange: (a: T)=> void, options?: AddEventListenerOptions): void;
symbols: {
signal: SymbolSignal;
onclear: SymbolOnclear;
}
}
export const S: S;

8
test/components/todosComponent.js
View File

@ -12,13 +12,15 @@ const className= style.host(todosComponent).css`
}
`;
/** @param {{ todos: string[] }} */
export function todosComponent({ todos= [] }= {}){
const todosS= S(todos.map(v=> S(v)), {
export function todosComponent({ todos= [ "A" ] }= {}){
const todosS= S([], {
/** @param {string} v */
add(v){ this.value.push(S(v)); },
/** @param {number} i */
remove(i){ this.value.splice(i, 1); }
remove(i){ this.value.splice(i, 1); },
[S.symbols.onclear](){ S.clear(...this.value); },
});
todos.forEach(v=> S.action(todosS, "add", v));
console.log(todosS); //TODO
const name= "todoName";
const onsubmitAdd= on("submit", event=> {