setup tsdown

tsdown.config.ts

@@ -0,0 +1,11 @@
+import { defineConfig } from "tsdown";
+
+export default defineConfig({
+  entry: "src/main.ts",
+  format: "esm",
+  outDir: "dist",
+
+  treeshake: true,
+  minify: true,
+  sourcemap: false,
+});