Merge pull request #1 from nknhb966/master

ありがとうございます！

Author: taisukef

downloadFile.js

@@ -1,12 +1,15 @@
-const downloadFile = (name, uint8arry) => {
+import { CONTENT_TYPE } from "https://code4sabae.github.io/js/CONTENT_TYPE.js";
+
+export const downloadFile = (name, uint8arry) => {
+  const ext = name.split('.').pop().toLowerCase();
+  const mime = CONTENT_TYPE[ext] || "application/octet-stream";
+  const blob = new Blob([uint8arry], { type: mime });
+  const url = URL.createObjectURL(blob);
   const link = document.createElement("a");
-  const dataurl = URL.createObjectURL(new Blob([uint8arry])); // , { type: "text/plain" }));
-  link.href = dataurl;
+  link.href = url;
   link.download = name;
   document.body.appendChild(link);
   link.click();
   link.remove();
+  URL.revokeObjectURL(url);
 };
-
-export { downloadFile };
-