Accepted baselines.

tests/baselines/reference/optionalProperties01.errors.txt

@@ -0,0 +1,18 @@
+tests/cases/conformance/types/typeRelationships/comparable/optionalProperties01.ts(9,14): error TS2352: Type '{ required1: string; optional: string; }' cannot be converted to type 'Foo'.
+  Property 'required2' is missing in type '{ required1: string; optional: string; }'.
+
+
+==== tests/cases/conformance/types/typeRelationships/comparable/optionalProperties01.ts (1 errors) ====
+    
+    interface Foo {
+      required1: string;
+      required2: string;
+      optional?: string;
+    }
+    
+    const foo1 = { required1: "hello" } as Foo;
+    const foo2 = { required1: "hello", optional: "bar" } as Foo;
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2352: Type '{ required1: string; optional: string; }' cannot be converted to type 'Foo'.
+!!! error TS2352:   Property 'required2' is missing in type '{ required1: string; optional: string; }'.
+    

tests/baselines/reference/optionalProperties01.js

@@ -0,0 +1,25 @@
+//// [optionalProperties01.ts]
+
+interface Foo {
+  required1: string;
+  required2: string;
+  optional?: string;
+}
+
+const foo1 = { required1: "hello" } as Foo;
+const foo2 = { required1: "hello", optional: "bar" } as Foo;
+
+
+//// [optionalProperties01.js]
+var foo1 = { required1: "hello" };
+var foo2 = { required1: "hello", optional: "bar" };
+
+
+//// [optionalProperties01.d.ts]
+interface Foo {
+    required1: string;
+    required2: string;
+    optional?: string;
+}
+declare const foo1: Foo;
+declare const foo2: Foo;

tests/baselines/reference/optionalProperties02.errors.txt

@@ -0,0 +1,15 @@
+tests/cases/conformance/types/typeRelationships/comparable/optionalProperties02.ts(7,1): error TS2352: Type '{ a: undefined; }' cannot be converted to type 'Foo'.
+  Property 'b' is missing in type '{ a: undefined; }'.
+
+
+==== tests/cases/conformance/types/typeRelationships/comparable/optionalProperties02.ts (1 errors) ====
+    
+    interface Foo {
+        a?: string;
+        b: string;
+    }
+    
+    <Foo>{ a: undefined };
+    ~~~~~~~~~~~~~~~~~~~~~
+!!! error TS2352: Type '{ a: undefined; }' cannot be converted to type 'Foo'.
+!!! error TS2352:   Property 'b' is missing in type '{ a: undefined; }'.

tests/baselines/reference/optionalProperties02.js

@@ -0,0 +1,18 @@
+//// [optionalProperties02.ts]
+
+interface Foo {
+    a?: string;
+    b: string;
+}
+
+<Foo>{ a: undefined };
+
+//// [optionalProperties02.js]
+({ a: undefined });
+
+
+//// [optionalProperties02.d.ts]
+interface Foo {
+    a?: string;
+    b: string;
+}