feat: add alert component suite for improved user notifications

- Introduced Alert, AlertDescription, and AlertTitle components to enhance user notification capabilities.
- Implemented alertVariants for customizable alert styles based on different variants.
- Added TypeScript support for props in each component, ensuring type safety and better integration.

These changes provide a structured approach to displaying alerts, improving user experience and flexibility in notifications.

src/components/ui/alert/Alert.vue

@@ -0,0 +1,21 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from "vue"
+import type { AlertVariants } from "."
+import { cn } from "@/lib/utils"
+import { alertVariants } from "."
+
+const props = defineProps<{
+  class?: HTMLAttributes["class"]
+  variant?: AlertVariants["variant"]
+}>()
+</script>
+
+<template>
+  <div
+    data-slot="alert"
+    :class="cn(alertVariants({ variant }), props.class)"
+    role="alert"
+  >
+    <slot />
+  </div>
+</template>

src/components/ui/alert/AlertDescription.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from "vue"
+import { cn } from "@/lib/utils"
+
+const props = defineProps<{
+  class?: HTMLAttributes["class"]
+}>()
+</script>
+
+<template>
+  <div
+    data-slot="alert-description"
+    :class="cn('text-muted-foreground col-start-2 grid justify-items-start gap-1 text-sm [&_p]:leading-relaxed', props.class)"
+  >
+    <slot />
+  </div>
+</template>

src/components/ui/alert/AlertTitle.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from "vue"
+import { cn } from "@/lib/utils"
+
+const props = defineProps<{
+  class?: HTMLAttributes["class"]
+}>()
+</script>
+
+<template>
+  <div
+    data-slot="alert-title"
+    :class="cn('col-start-2 line-clamp-1 min-h-4 font-medium tracking-tight', props.class)"
+  >
+    <slot />
+  </div>
+</template>

src/components/ui/alert/index.ts

@@ -0,0 +1,24 @@
+import type { VariantProps } from "class-variance-authority"
+import { cva } from "class-variance-authority"
+
+export { default as Alert } from "./Alert.vue"
+export { default as AlertDescription } from "./AlertDescription.vue"
+export { default as AlertTitle } from "./AlertTitle.vue"
+
+export const alertVariants = cva(
+  "relative w-full rounded-lg border px-4 py-3 text-sm grid has-[>svg]:grid-cols-[calc(var(--spacing)*4)_1fr] grid-cols-[0_1fr] has-[>svg]:gap-x-3 gap-y-0.5 items-start [&>svg]:size-4 [&>svg]:translate-y-0.5 [&>svg]:text-current",
+  {
+    variants: {
+      variant: {
+        default: "bg-card text-card-foreground",
+        destructive:
+          "text-destructive bg-card [&>svg]:text-current *:data-[slot=alert-description]:text-destructive/90",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  },
+)
+
+export type AlertVariants = VariantProps<typeof alertVariants>