Pass the rewatch exit code through in wrapper script

CHANGELOG.md

@@ -13,7 +13,9 @@
 # 12.0.0-alpha.15 (Unreleased)
 
 #### :bug: Bug fix
-- ignore inferred arity in functions inside `%raw` functions, leaving to `%ffi` the responsibility to check the arity since it gives an error in case of mismatch. https://github.com/rescript-lang/rescript/pull/7542
+
+- Ignore inferred arity in functions inside `%raw` functions, leaving to `%ffi` the responsibility to check the arity since it gives an error in case of mismatch. https://github.com/rescript-lang/rescript/pull/7542
+- Pass the rewatch exit code through in wrapper script. https://github.com/rescript-lang/rescript/pull/7565
 
 #### :nail_care: Polish
 

cli/rewatch.js

@@ -7,6 +7,14 @@ import { rewatch_exe, bsc_exe } from "./common/bins.js";
 
 const args = process.argv.slice(2);
 
-child_process.spawnSync(rewatch_exe, [...args, "--bsc-path", bsc_exe], {
-  stdio: "inherit",
-});
+try {
+  child_process.execFileSync(rewatch_exe, [...args, "--bsc-path", bsc_exe], {
+    stdio: "inherit",
+  });
+} catch (err) {
+  if (err.status !== undefined) {
+    process.exit(err.status); // Pass through the exit code
+  } else {
+    process.exit(1); // Generic error
+  }
+}