feat: using fetch to get buildin masks

app/masks/build.ts

@@ -0,0 +1,23 @@
+import fs from "fs";
+import path from "path";
+import { CN_MASKS } from "./cn";
+import { TW_MASKS } from "./tw";
+import { EN_MASKS } from "./en";
+
+const BUILTIN_MASKS: BuiltinMask[] = {
+  cn: CN_MASKS,
+  tw: TW_MASKS,
+  en: EN_MASKS,
+};
+
+const dirname = path.dirname(__filename);
+
+fs.writeFile(
+  dirname + "/../../public/masks.json",
+  JSON.stringify(BUILTIN_MASKS, null, 4),
+  function (error) {
+    if (error) {
+      console.error("[Build] failed to build masks", error);
+    }
+  },
+);