fix: extract service worker setup to Svelte app initialization

lib/static/index.js

@@ -13,12 +13,6 @@ import { requestStore } from '../frontend/stores'
 import { Request } from '../frontend/records'
 
 (() => {
-  let request = null
-
-  requestStore.subscribe((updatedRequest) => {
-    request = updatedRequest
-  })
-
   document.addEventListener('DOMContentLoaded', boot)
 
   const configureLogger = (logger) => {
@@ -34,57 +28,5 @@ import { Request } from '../frontend/records'
     logger.setRemoteLogging(shouldTrack)
   }
 
-  const clearStatuses = () => {
-    document.querySelectorAll('.status-item').forEach((item) => {
-      item.classList.remove('show')
-    })
-  }
-
-  const setServiceWorkerStatus = (status) => {
-    clearStatuses()
-    const sw = document.querySelector('#service-worker')
-    sw.innerText = status
-    status ? sw.classList.add('show') : sw.classList.remove('show')
-  }
-
-  const form = document.querySelector('form')
-  const submitButton = document.querySelector("#submit")
-  const input = document.querySelector("#url")
-  const link = document.querySelector("#current-download")
-
-  if (window.navigator && window.navigator.serviceWorker) {
-    const serviceWorker = window.navigator.serviceWorker
-    serviceWorker.register('sw.js', {
-      scope: './',
-    }).then((registration) => {
-      setServiceWorkerStatus(`Service worker registered with scope ${registration.scope}`)
-      setTimeout(() => {
-        setServiceWorkerStatus('')
-      }, 4500)
-
-      registration.addEventListener('updatefound', () => {
-        console.info('Service worker will be updated...')
-        const newWorker = registration.installing
-
-        newWorker.addEventListener('statechange', () => {
-          if (newWorker.state === 'installed') {
-            newWorker.postMessage({ action: 'skipWaiting' })
-          }
-        })
-      })
-    }).catch((err) => {
-      setServiceWorkerStatus(`Service worker error: ${err.toString()}`)
-    })
-
-    let refreshing
-    serviceWorker.addEventListener('controllerchange', () => {
-      if (refreshing) {
-        return
-      }
-      window.location.reload()
-      refreshing = true
-    })
-  }
-
   configureLogger(logger)
 })()