simple server

1 files changed, 49 insertions, 0 deletions

diff --git a/server.mjs b/server.mjs
new file mode 100644
index 0000000..2b1334d
--- /dev/null
+++ b/server.mjs
@@ -0,0 +1,49 @@
+import { createServer } from 'http';
+import { open } from "fs/promises";
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const MIME = {
+  '.html': 'text/html',
+  '.js':   'application/javascript',
+  '.map': 'application/json',
+  '.hex': 'text/plain',
+};
+const PORT = 8000;
+const ROOT = path.dirname(fileURLToPath(import.meta.url)) + "/dist";
+
+const notFound = (res) => {
+  res.writeHead(404);
+  res.end("Not found");
+}
+
+const error = (res) => {
+  res.writeHead(500);
+  res.end("Internal error");
+}
+
+createServer(async (req, res) => {
+  const urlPath = req.url.split('?')[0];
+  const file = path.join(ROOT, urlPath === '/' ? '/index.html' : urlPath);
+  if (!file.startsWith(ROOT + "/")) return notFound(res);
+
+  try {
+    await using fd = await open(file, "r");
+    res.writeHead(200, {
+      "Content-Type": MIME[path.extname(file)] ?? "text/plain"
+    });
+
+    for await (const chunk of fd.createReadStream()) {
+      res.write(chunk);
+    }
+    res.end();
+
+  } catch (e) {
+    if (e instanceof Error && e.code === "ENOENT") {
+      notFound(res);
+    } else {
+      console.error(e);
+      error(res);
+    }
+  }
+}).listen(PORT, () => console.log(`anduril-sim @ http://localhost:${PORT}`));