add nova

nova/resources/js/composables/useFilePreviews.js

@@ -0,0 +1,28 @@
+import { computed } from 'vue'
+
+export function useFilePreviews(file) {
+  const imageTypes = [
+    'image/png',
+    'image/jpeg',
+    'image/gif',
+    'image/svg+xml',
+    'image/webp',
+  ]
+
+  const type = computed(() =>
+    imageTypes.includes(file.value.type) ? 'image' : 'other'
+  )
+
+  const previewUrl = computed(() =>
+    URL.createObjectURL(file.value.originalFile)
+  )
+
+  const isImage = computed(() => type.value === 'image')
+
+  return {
+    imageTypes,
+    isImage,
+    type,
+    previewUrl,
+  }
+}