Fix broccoli esm import to not break node 22.

.gitignore

@@ -1,4 +1,5 @@
 /.eslintcache
+/.vscode
 /build
 /node_modules
 /brave

fern.js

@@ -1,5 +1,7 @@
 #!/usr/bin/env node
 
+require("./fern/fixup_esm_for_node22");
+
 const program = require("commander");
 const colors = require("colors");
 

fern/fixup_esm_for_node22.js

@@ -0,0 +1,37 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+const fs = require("fs");
+const path = require("path");
+
+const filePath = path.join("node_modules/broccoli/dist/load_brocfile.js");
+
+try {
+  let content = fs.readFileSync(filePath, "utf8");
+  const originalContent = content;
+
+  // Comment out ESM-related lines
+  content = content.replace(
+    /^\s*(const esm_1 = __importDefault\(require\("esm"\)\));/m,
+    "// $1;"
+  );
+  content = content.replace(
+    /^\s*(const esmRequire = esm_1\.default\(module\));/m,
+    "// $1;"
+  );
+
+  // Replace esmRequire with require
+  content = content.replace(
+    /brocfile = esmRequire\(brocfilePath\);/,
+    "brocfile = require(brocfilePath);"
+  );
+
+  if (content !== originalContent) {
+    fs.writeFileSync(filePath, content);
+    console.log("Successfully patched load_brocfile.js");
+  }
+} catch (error) {
+  console.error("Error patching load_brocfile.js:", error);
+  process.exit(1);
+}