fix: add guards

Author: graphieros

app/components/Package/TimelineChart.vue

@@ -91,6 +91,9 @@ const activeVersionIndex = computed(() => {
 
 const seriesTotalSize = computed(() => {
   const values = convertedData.value.map(d => d.totalSize)
+  if (!values.length) {
+    return { values, min: 0, max: 1 }
+  }
   return {
     values,
     min: Math.min(...values),
@@ -100,6 +103,9 @@ const seriesTotalSize = computed(() => {
 
 const seriesDependencies = computed(() => {
   const values = convertedData.value.map(d => d.dependencyCount)
+  if (!values.length) {
+    return { values, min: 0, max: 1 }
+  }
   return {
     values,
     min: Math.min(...values),