feat(alerts): remove hello-goodbye

Consumers can use auto-animate instead

src/alerts/README.md

@@ -62,10 +62,6 @@ type AlertOptions = {
     // If -1, the alert will not automatically disappear.
     // If undefined, the default value will be used.
     duration?: number;
-
-    // Whether or not to animate the alert in, using a hello-goodbye transition.
-    // Defaults to true.
-    animate?: boolean;
 };
 
 // The `key` and `duration` options can also be specified as [data-*] attributes
@@ -90,23 +86,6 @@ ui-alerts {
     flex-direction: column-reverse;
     align-items: flex-end;
 }
-
-/* Transitions can be applied to alerts using hello-goodbye */
-@media (prefers-reduced-motion: no-preference) {
-    ui-alerts > .enter-active,
-    ui-alerts > .leave-active,
-    ui-alerts > .move {
-        transition: all 0.5s;
-    }
-
-    ui-alerts > .enter-from {
-        transform: translateY(-100%);
-    }
-
-    ui-alerts > .leave-to {
-        opacity: 0;
-    }
-}
 ```
 
 ## Further Reading

src/alerts/alerts.ts

@@ -1,9 +1,6 @@
-import { hello, goodbye, move } from 'hello-goodbye';
-
 export type AlertOptions = {
     key?: string;
     duration?: number;
-    animate?: boolean;
 };
 
 export default class AlertsElement extends HTMLElement {
@@ -42,7 +39,7 @@ export default class AlertsElement extends HTMLElement {
         }
 
         for (const child of this.children) {
-            this.show(child as HTMLElement, { animate: false });
+            this.show(child as HTMLElement);
         }
     }
 
@@ -54,16 +51,7 @@ export default class AlertsElement extends HTMLElement {
         el.dataset.key = key;
 
         if (!this.contains(el)) {
-            if (options.animate === false) {
-                this.append(el);
-            } else {
-                move(this.children, () => {
-                    this.append(el);
-                    hello(el);
-                });
-            }
-        } else {
-            hello(el);
+            this.append(el);
         }
 
         this.added.add(el);
@@ -105,9 +93,7 @@ export default class AlertsElement extends HTMLElement {
 
         this.added.delete(elOrKey);
 
-        move(this.children, () =>
-            goodbye(elOrKey).then(() => elOrKey.remove())
-        );
+        elOrKey.remove();
 
         this.clearTimeout(elOrKey);
     }