refacto: move size to computed values

src/components/Feed/Modal.vue

@@ -22,7 +22,7 @@
 				<template #icon>
 					<Download :size="20" />
 				</template>
-				{{ t('repod', 'Download') }} {{ size ? `(${humanFileSize(size)})` : '' }}
+				{{ t('repod', 'Download') }} {{ size ? `(${episodeFileSize})` : '' }}
 			</NcButton>
 		</div>
 	</div>
@@ -73,6 +73,9 @@ export default {
 		},
 	},
 	computed: {
+		episodeFileSize() {
+			return humanFileSize(this.size)
+		},
 		strippedDescription() {
 			const pre = document.createElement('pre')
 			pre.innerHTML = this.description
@@ -80,9 +83,6 @@ export default {
 			return strippedDescription.replace(/\n/g, '<br>')
 		},
 	},
-	methods: {
-		humanFileSize,
-	},
 }
 </script>