[ez] Move copyright script to top level

compiler/scripts/copyright.js

@@ -0,0 +1,71 @@
+/**
+ * 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.
+ */
+
+"use strict";
+
+const fs = require("fs");
+const glob = require("glob");
+
+const META_COPYRIGHT_COMMENT_BLOCK =
+  `/**
+ * 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.
+ */`.trim() + "\n\n";
+
+const files = glob.sync("**/*.{js,ts,tsx,jsx}", {
+  ignore: [
+    "**/dist/**",
+    "**/node_modules/**",
+    "test262/**",
+    "react/**",
+    "forget-feedback/**",
+    "packages/js-fuzzer/**",
+    "**/tests/fixtures/**",
+    "**/__tests__/fixtures/**",
+    // Special case where we need to preserve a jest directive
+    "packages/forest-runtime/src/__tests__/DOM-test.ts",
+  ],
+});
+
+const updatedFiles = new Map();
+let hasErrors = false;
+files.forEach((file) => {
+  try {
+    const result = processFile(file);
+    if (result != null) {
+      updatedFiles.set(file, result);
+    }
+  } catch (e) {
+    console.error(e);
+    hasErrors = true;
+  }
+});
+if (hasErrors) {
+  console.error("Update failed");
+  process.exit(1);
+} else {
+  for (const [file, source] of updatedFiles) {
+    fs.writeFileSync(file, source, "utf8");
+  }
+  console.log("Update complete");
+}
+
+function processFile(file) {
+  let source = fs.readFileSync(file, "utf8");
+
+  if (source.indexOf(META_COPYRIGHT_COMMENT_BLOCK) === 0) {
+    return null;
+  }
+  if (/^\/\*\*/.test(source)) {
+    source = source.replace(/\/\*\*[^\/]+\/\s+/, META_COPYRIGHT_COMMENT_BLOCK);
+  } else {
+    source = `${META_COPYRIGHT_COMMENT_BLOCK}${source}`;
+  }
+  return source;
+}