1 files changed, 26 insertions, 21 deletions
diff --git a/mod.ts b/mod.ts
index 81a2bc2..0af8943 100755
--- a/mod.ts
+++ b/mod.ts
@@ -1,31 +1,36 @@
 #!/usr/bin/env -S deno run --allow-env --allow-net
 
-import { argv } from "@emprespresso/pengueno";
+import { argv, IEither, Either } from "@emprespresso/pengueno";
 import { runServer } from "@emprespresso/ci_server";
 
-const main = (_argv = Deno.args) => {
-  const defaults = {
-    "--port": "9000",
-    "--host": "0.0.0.0",
-  };
-  const _args = argv(["--run-server", "--port", "--host"], defaults, _argv);
-  const args = _args.fold((err, args) => {
-    if (!args || err) throw err;
-    return {
+const _defaults = {
+  "--port": "9000",
+  "--host": "0.0.0.0",
+};
+const main = (
+  _argv = Deno.args,
+  defaults = _defaults,
+): Promise<IEither<Error, void>> =>
+  argv(["--run-server", "--port", "--host"], defaults, _argv)
+    .mapRight((args) => ({
       server_mode: "--run-server" in args,
       port: parseInt(args["--port"]),
       host: args["--host"],
-    };
-  });
-
-  const promises: Array<Promise<void>> = [];
-  if (args.server_mode) {
-    promises.push(runServer(args.port, args.host));
-  }
-
-  return Promise.all(promises);
-};
+    }))
+    .flatMapAsync((runConfig) => {
+      if (runConfig.server_mode) {
+        return runServer(runConfig.port, runConfig.host);
+      }
+      return Promise.resolve(Either.right(undefined));
+    });
 
 if (import.meta.main) {
-  await main();
+  await main().then((eitherDone) =>
+    eitherDone.fold(({ isLeft, value }) => {
+      if (!isLeft) return;
+
+      console.error(value);
+      Deno.exit(1);
+    }),
+  );
 }