Add types to scripts and config files (#1277)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1277

Now that we have some TypeScript infra set up, move scripts (mainly the benchmarking one) and config files to TypeScript.

Starts to move away a bit from the magic globals used in the JS environment.

Reviewed By: yungsters

Differential Revision: D45511176

fbshipit-source-id: 09bb1117a1b331758ed9d210e82d5b250577df81

javascript/tests/bin/run-bench.ts

@@ -0,0 +1,67 @@
+#!/usr/bin/env ts-node
+/**
+ * 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.
+ *
+ * @format
+ */
+
+import path from "path";
+
+const WARMUP_ITERATIONS = 3;
+const BENCHMARK_ITERATIONS = 10;
+
+const testFiles = process.argv.slice(2);
+
+const testResults = new Map<string, Map<string, number>>();
+
+for (const type of ["asmjs", "wasm"]) {
+  globalThis.Yoga = require(type === "asmjs"
+    ? "../../dist/entrypoint/asmjs-sync"
+    : "../../dist/entrypoint/wasm-sync");
+
+  for (const file of testFiles) {
+    globalThis.YGBENCHMARK = (name: string, fn: () => void) => {
+      let testEntry = testResults.get(name);
+
+      if (testEntry === undefined)
+        testResults.set(name, (testEntry = new Map()));
+
+      for (let t = 0; t < WARMUP_ITERATIONS; ++t) fn();
+
+      const start = Date.now();
+
+      for (let t = 0; t < BENCHMARK_ITERATIONS; ++t) fn();
+
+      const end = Date.now();
+
+      testEntry.set(type, (end - start) / BENCHMARK_ITERATIONS);
+    };
+
+    const modulePath = path.resolve(file);
+
+    delete require.cache[require.resolve("../tools/globals")];
+    delete require.cache[modulePath];
+    require(modulePath);
+  }
+}
+
+console.log(
+  `Note: those tests are independants; there is no time relation to be expected between them`
+);
+
+for (const [name, results] of testResults) {
+  console.log();
+
+  const min = Math.min(Infinity, ...results.values());
+
+  console.log(name);
+
+  for (const [type, result] of results) {
+    console.log(
+      `  - ${type}: ${result}ms (${Math.round((result / min) * 10000) / 100}%)`
+    );
+  }
+}