feat: switch to ESM (#101)

Author: ArnaudBarre

scripts/bundle.ts

@@ -70,6 +70,7 @@ module.exports.default = react;`,
         author: "Arnaud Barré (https://github.com/ArnaudBarre)",
         license: "MIT",
         repository: "github:vitejs/vite-plugin-react-swc",
+        type: "module",
         main: "index.cjs",
         types: "index.d.ts",
         module: "index.mjs",