Add regression tests

Author: ahejlsberg

tests/cases/conformance/types/typeRelationships/typeInference/unionAndIntersectionInference3.ts

@@ -1,7 +1,42 @@
 // @strict: true
+// @target: esnext
 
 // Repro from #30720
 
 type Maybe<T> = T | undefined;
 declare function concatMaybe<T>(...args: (Maybe<T> | Maybe<T>[])[]): T[];
 concatMaybe([1, 2, 3], 4);
+
+// Repros from #32247
+
+const g: <U, R, S>(com: () => Iterator<S, U, R> | AsyncIterator<S, U, R>) => Promise<U> = async <U, R, S>(com: () => Iterator<S, U, R> | AsyncIterator<S, U, R>): Promise<U> => {
+  throw com;
+};
+
+interface Foo1<T> {
+    test(value: T): void;
+}
+
+interface Bar1<T> {
+    test(value: T | PromiseLike<T>): void;
+}
+
+declare let f1: <T>(x: Foo1<T> | Bar1<T>) => Promise<T>;
+declare let f2: <U>(x: Foo1<U> | Bar1<U>) => Promise<U>;
+
+f1 = f2;
+f2 = f1;
+
+type Foo2<T> = {
+    test(value: T): void;
+}
+
+type Bar2<T> = {
+    test(value: T | PromiseLike<T>): void;
+}
+
+declare let g1: <T>(x: Foo2<T> | Bar2<T>) => Promise<T>;
+declare let g2: <U>(x: Foo2<U> | Bar2<U>) => Promise<U>;
+
+g1 = g2;
+g2 = g1;