Add MIME support

Author: johanbook

package-lock.json

@@ -11,5 +11,8 @@
   "license": "ISC",
   "devDependencies": {
     "prettier": "^2.7.1"
+  },
+  "dependencies": {
+    "mime": "^3.0.0"
   }
 }

package.json

@@ -1,5 +1,6 @@
 const fs = require("fs");
 const http = require("http");
+const mime = require("mime");
 const path = require("path");
 
 const DEFAULT_INDEX_FILE = process.env.DEFAULT_INDEX_FILE || "index.html";
@@ -16,6 +17,10 @@ function getFile(filePath) {
   }
 }
 
+function getFileMime(filePath) {
+  return mime.getType(filePath);
+}
+
 function getDomainFromRequest(req) {
   const headers = req.headers;
   const host = headers.host;
@@ -47,6 +52,9 @@ function handleRequest(req, res) {
     return;
   }
 
+  const mimeType = getFileMime(actualFilePath);
+
+  res.setHeader("Content-Type", mimeType);
   res.writeHead(200);
   res.end(file);
 }