30 lines
866 B
JavaScript
30 lines
866 B
JavaScript
import "https://esm.sh/preact@10.23.1/debug";
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import * as Preact from "https://esm.sh/preact@10.23.1";
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import * as React from "https://esm.sh/preact@10.23.1/compat";
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const H = Preact.h;
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console.log(React);
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/** @typedef {(vnode:Preact.VNode)=>unknown} DeepHook*/
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/** @type {DeepHook|undefined} */
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const renderOld =Preact.options.__r;
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/** @type {DeepHook} */
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const renderNew =(vnode)=>
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{
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console.log("render!")
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console.log(vnode);
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// how to examine state context here?
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};
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Preact.options.__r = renderOld ? /**@type{DeepHook}*/((vnode)=>{renderOld(vnode); renderNew(vnode);}) : renderNew;
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const Component =()=>
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{
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const [countGet, countSet] = React.useState(3);
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return H("h1", {onClick(){countSet(countGet+1)}}, `count: ${countGet}`);
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}
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const root = document.querySelector("#app")||document.body;
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Preact.render(H(Component, {HEY:"HEY"}), root); |