Remove undefined from readModeledMethod return type

extensions/ql-vscode/src/data-extensions-editor/generate-flow-model.ts

@@ -72,15 +72,11 @@ class FlowModelGenerator {
 
     const results = decodedResults.tuples;
 
-    return results
-      .map((result): [string, ModeledMethod] | undefined => {
-        const row = result[0] as string;
+    return results.map((result): [string, ModeledMethod] => {
+      const row = result[0] as string;
 
-        return definition.readModeledMethod(row.split(";"));
-      })
-      .filter(
-        (result): result is [string, ModeledMethod] => result !== undefined,
-      );
+      return definition.readModeledMethod(row.split(";"));
+    });
   }
 
   async run(

extensions/ql-vscode/src/data-extensions-editor/yaml.ts

@@ -9,7 +9,7 @@ type ExternalApiUsageByType = {
 type ExtensiblePredicateDefinition = {
   extensiblePredicate: string;
   generateMethodDefinition: (method: ExternalApiUsageByType) => any[];
-  readModeledMethod: (row: any[]) => [string, ModeledMethod] | undefined;
+  readModeledMethod: (row: any[]) => [string, ModeledMethod];
 };
 
 function readRowToMethod(row: any[]): string {