Add tests

tests/cases/conformance/types/mapped/mappedTypeWithAny.ts

@@ -0,0 +1,27 @@
+// @strict: true
+// @declaration: true
+
+type Item = { value: string };
+type ItemMap<T> = { [P in keyof T]: Item };
+
+declare let x0: keyof any;
+declare let x1: { [P in any]: Item };
+declare let x2: { [P in string]: Item };
+declare let x3: { [P in keyof any]: Item };
+declare let x4: ItemMap<any>;
+
+// Repro from #19152
+
+type Data = {
+  value: string;
+}
+
+type StrictDataMap<T> = {
+  [P in keyof T]: Data
+}
+
+declare let z: StrictDataMap<any>;
+for (let id in z) {
+  let data = z[id];
+  let x = data.notAValue;  // Error
+}