refactor: guard against an empty list of tables

owid · Nov 28, 2023 · b93a052 · b93a052
1 parent 1916ae5
commit b93a052
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx b/packages/@ourworldindata/grapher/src/lineCharts/LineChart.tsx
@@ -66,6 +66,7 @@ import {
     CoreValueType,
     isNotErrorValue,
     EntityName,
+    BlankOwidTable,
 } from "@ourworldindata/core-table"
 import {
     autoDetectSeriesStrategy,
@@ -311,6 +312,9 @@ export class LineChart
             const groupedByEntity = table
                 .groupBy("entityName")
                 .filter((t) => !t.hasAnyColumnNoValidValue(this.yColumnSlugs))
+
+            if (groupedByEntity.length === 0) return BlankOwidTable()
+
             table = groupedByEntity[0].concat(groupedByEntity.slice(1))
         }