Convert manually authored tests to TypeScript

Summary: Converts the manually authored tests against the JavaScript bindings to TypeScript. This should make authoring UTs a bit more pleasent, but more importantly lets us run typechecking on sample usage of all of the various APIs.

Reviewed By: yungsters

Differential Revision: D45570416

fbshipit-source-id: 44586b4d31fbeae406b388ed336a8305c788b5dd

javascript/tests/YGComputedBorderTest.test.ts

@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import { Yoga } from "./tools/globals";
+
+test("border_start", () => {
+  const root = Yoga.Node.create();
+  root.setWidth(100);
+  root.setHeight(100);
+  root.setBorder(Yoga.EDGE_START, 10);
+
+  root.calculateLayout(100, 100, Yoga.DIRECTION_LTR);
+
+  expect(root.getComputedBorder(Yoga.EDGE_LEFT)).toBe(10);
+  expect(root.getComputedBorder(Yoga.EDGE_RIGHT)).toBe(0);
+
+  root.calculateLayout(100, 100, Yoga.DIRECTION_RTL);
+
+  expect(root.getComputedBorder(Yoga.EDGE_LEFT)).toBe(0);
+  expect(root.getComputedBorder(Yoga.EDGE_RIGHT)).toBe(10);
+
+  root.freeRecursive();
+});