refactor: use async await

Author: Naramsim

src/installSW.js

@@ -1,13 +1,12 @@
 import { log } from './utils.js'
 
-export function installSW(swLocation) {
+export async function installSW(swLocation) {
     if (navigator && window && 'serviceWorker' in navigator) {
-        window.addEventListener('load', function() {
-            navigator.serviceWorker.register(`${swLocation}pokeapi-js-wrapper-sw.js`, { scope: './' })
-                .catch(error => {
-                    log('SW installation failed with the following error:')
-                    log(error)
-                })
-        })
+        try {
+            const r = await navigator.serviceWorker.register(`${swLocation}pokeapi-js-wrapper-sw.js`, { scope: './' })
+        } catch (error) {
+            log('SW installation failed with the following error:')
+            log(error)
+        }
     }
 }

test/example-sw.html

@@ -4,7 +4,7 @@
     <title>SW test</title>
     <script type="module">
       import {Pokedex} from '../src/index.js'
-      const P = await Pokedex.init({ cacheImages: true, swLocation: '/pokeapi-js-wrapper/test/' });
+      const P = await Pokedex.init({ cacheImages: true, swLocation: './' });
     </script>
   </head>