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<script lang="ts">
import { browser } from '$app/env'
import { navigating } from '$app/stores'
let progress = 0
let widthTransitionDuration = 1000
let opacity = 1
function navigationStart() {
widthTransitionDuration = 0
opacity = 1
progress = 0
requestAnimationFrame(() => {
widthTransitionDuration = 1000
progress = 1
})
}
function navigationEnd() {
opacity = 0
setTimeout(() => {
widthTransitionDuration = 0
progress = 0
}, 300)
}
let currentUrl: string | undefined = ''
navigating.subscribe(() => {
if (browser && $navigating?.to?.toString() !== currentUrl) {
if ($navigating) navigationStart()
else navigationEnd()
currentUrl = $navigating?.to?.toString()
}
})
</script>
<div
id="loader"
style="width:{progress *
100}%;transition-duration:{widthTransitionDuration}ms,300ms;opacity:{opacity * 100}%"
/>
<style>
#loader {
position: fixed;
left: 0px;
top: 0px;
transition: width 1s cubic-bezier(0.4, 0, 0.2, 1), opacity 100ms linear;
height: 6px;
z-index: 20;
/* add a faint glow effect */
/* background: -moz-linear-gradient(top, #16e 0%, #16e 50%, #16e5 50%, #16e0 100%); */
background: linear-gradient(to bottom, #16e 0%, #16e 50%, #16e5 50%, #16e0 100%);
}
</style>
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