l-assiette/dist/js/topbar.min.js

const topBar=document.createElement("div");topBar.style.position="fixed",topBar.style.minHeight="3px",topBar.style.backgroundColor="red",topBar.style.zIndex="1";const transitionD=500;topBar.style.transition="min-width 500ms, opacity 250ms",topBar.style.minWidth="0";let promesaActual,widthDestino=0;document.body.appendChild(topBar);const cambiarProgreso=t=>(widthDestino=t,promesaActual=new Promise((o,i)=>{topBar.style.minWidth=`${t}%`,setTimeout(()=>o(),500)})),cancelarTransicion=()=>{const t=topBar.style.transition;topBar.style.transition="",topBar.style.minWidth=`${widthDestino}%`,topBar.style.transition=t},ocultarTopBar=()=>{topBar.style.opacity="0",setTimeout(()=>{topBar.style.minWidth="0%"},250)},reiniciarTopBar=()=>{const t=topBar.style.transition;topBar.style.transition="",topBar.style.minWidth="0",topBar.style.opacity="1",topBar.style.transition=t};