Gateway: sync runtime post-build artifacts

scripts/runtime-postbuild-shared.mjs

@@ -0,0 +1,26 @@
+import fs from "node:fs";
+import { dirname } from "node:path";
+
+export function writeTextFileIfChanged(filePath, contents) {
+  const next = String(contents);
+  try {
+    const current = fs.readFileSync(filePath, "utf8");
+    if (current === next) {
+      return false;
+    }
+  } catch {
+    // Write the file when it does not exist or cannot be read.
+  }
+  fs.mkdirSync(dirname(filePath), { recursive: true });
+  fs.writeFileSync(filePath, next, "utf8");
+  return true;
+}
+
+export function removeFileIfExists(filePath) {
+  try {
+    fs.rmSync(filePath, { force: true });
+    return true;
+  } catch {
+    return false;
+  }
+}