Move AlertTableTruncatedMessage to a new component in a new file

extensions/ql-vscode/src/view/results/AlertTable.tsx

@@ -23,6 +23,7 @@ import { SarifMessageWithLocations } from "./locations/SarifMessageWithLocations
 import { SarifLocation } from "./locations/SarifLocation";
 import { AlertTableDropdownIndicatorCell } from "./AlertTableDropdownIndicatorCell";
 import { AlertTableNoResults } from "./AlertTableNoResults";
+import { AlertTableTruncatedMessage } from "./AlertTableTruncatedMessage";
 
 type AlertTableProps = ResultTableProps & {
   resultSet: InterpretedResultSet<SarifInterpretationData>;
@@ -295,21 +296,15 @@ export class AlertTable extends React.Component<
       },
     );
 
-    if (numTruncatedResults > 0) {
-      rows.push(
-        <tr key="truncatd-message">
-          <td colSpan={5} style={{ textAlign: "center", fontStyle: "italic" }}>
-            Too many results to show at once. {numTruncatedResults} result(s)
-            omitted.
-          </td>
-        </tr>,
-      );
-    }
-
     return (
       <table className={className}>
         <AlertTableHeader sortState={resultSet.interpretation.data.sortState} />
-        <tbody>{rows}</tbody>
+        <tbody>
+          {rows}
+          <AlertTableTruncatedMessage
+            numTruncatedResults={numTruncatedResults}
+          />
+        </tbody>
       </table>
     );
   }

extensions/ql-vscode/src/view/results/AlertTableTruncatedMessage.tsx

@@ -0,0 +1,19 @@
+import * as React from "react";
+
+interface Props {
+  numTruncatedResults: number;
+}
+
+export function AlertTableTruncatedMessage(props: Props): JSX.Element | null {
+  if (props.numTruncatedResults === 0) {
+    return null;
+  }
+  return (
+    <tr key="truncatd-message">
+      <td colSpan={5} style={{ textAlign: "center", fontStyle: "italic" }}>
+        Too many results to show at once. {props.numTruncatedResults} result(s)
+        omitted.
+      </td>
+    </tr>
+  );
+}