🤖 Merge PR DefinitelyTyped#72961 fix(node): export TestContextAssert interface by @nlf

Author: nlf

types/node/test.d.ts

@@ -1800,6 +1800,7 @@ declare module "node:test" {
         test,
         test as default,
         TestContext,
+        TestContextAssert,
         todo,
     };
 }

types/node/test/test.ts

@@ -1046,6 +1046,13 @@ test("planning with streams", (t: TestContext, done) => {
 });
 
 // Test custom assertion functions.
+// extend the TestContextAssert interface so we have correct typing
+declare module "node:test" {
+    interface TestContextAssert {
+        isOdd(value: number): void;
+    }
+}
+
 {
     test.assert.register("isOdd", (n: number) => {
         assert.strictEqual(n % 2, 1);