🤖 Merge PR DefinitelyTyped#72903 n3: Accept undefined as a type predicate argument by @opl-

Author: opl-

types/n3/index.d.ts

@@ -379,11 +379,11 @@ export interface StoreOptions {
 }
 
 export namespace Util {
-    function isNamedNode(value: RDF.Term | null): value is RDF.NamedNode;
-    function isBlankNode(value: RDF.Term | null): value is RDF.BlankNode;
-    function isLiteral(value: RDF.Term | null): value is RDF.Literal;
-    function isVariable(value: RDF.Term | null): value is RDF.Variable;
-    function isDefaultGraph(value: RDF.Term | null): value is RDF.DefaultGraph;
+    function isNamedNode(value: RDF.Term | null | undefined): value is RDF.NamedNode;
+    function isBlankNode(value: RDF.Term | null | undefined): value is RDF.BlankNode;
+    function isLiteral(value: RDF.Term | null | undefined): value is RDF.Literal;
+    function isVariable(value: RDF.Term | null | undefined): value is RDF.Variable;
+    function isDefaultGraph(value: RDF.Term | null | undefined): value is RDF.DefaultGraph;
     function inDefaultGraph(value: RDF.Quad): boolean;
     function prefix(iri: RDF.NamedNode | string, factory?: RDF.DataFactory): PrefixedToIri;
     function prefixes(

types/n3/n3-tests.ts

@@ -467,6 +467,18 @@ function test_doc_utility() {
     if (N3Util.isDefaultGraph(term)) {
         const defaultGraphTerm: RDF.DefaultGraph = term;
     }
+
+    N3Util.isNamedNode(null);
+    N3Util.isBlankNode(null);
+    N3Util.isLiteral(null);
+    N3Util.isVariable(null);
+    N3Util.isDefaultGraph(null);
+
+    N3Util.isNamedNode(undefined);
+    N3Util.isBlankNode(undefined);
+    N3Util.isLiteral(undefined);
+    N3Util.isVariable(undefined);
+    N3Util.isDefaultGraph(undefined);
 }
 
 function test_parser_options() {