mirror of https://github.com/n2geoff/um
3 lines
962 B
JavaScript
3 lines
962 B
JavaScript
/*! Um v:0.4.0 | MIT LICENSE | https://github.com/n2geoff/um */
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function h(tag,...args){const el=document.createElement(tag);return args.forEach((arg=>{["boolean","string","number"].includes(typeof arg)?el.appendChild(document.createTextNode(arg)):Array.isArray(arg)?el.append(...arg):Object.assign(el,arg)})),el}function app(opts){let data=check(opts.state,{}),view=check(opts.view,(()=>null)),actions=check(opts.actions,{}),mount=opts.mount||"body";function check(value,type){return typeof value==typeof type?value:type}const update=()=>{document.querySelector(mount).replaceChildren(view(data,actions))};return opts.view&&mount&&function(input,actions){Object.entries(actions).forEach((([name,action])=>{"function"==typeof action&&(actions[name]=(...args)=>{Object.assign(data,action(input,...args)),update()})})),update()}(data,actions),{state:state=>("object"==typeof state&&(data={...data,...state}),update(),data)}}export{app,h};
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