chore: read package.json using fs instead of import assertion

Author: microshine

rollup.config.mjs

@@ -3,11 +3,11 @@ import path from "node:path";
 import url from "node:url";
 import typescript from "rollup-plugin-typescript2";
 import dts from "rollup-plugin-dts";
-import pkg from "./package.json" assert { type: "json" };
 
 const __filename = url.fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const LICENSE = fs.readFileSync("LICENSE", { encoding: "utf-8" });
+const pkg = JSON.parse(fs.readFileSync("package.json", { encoding: "utf-8" }));
 const banner = [
   "/*!",
   ...LICENSE.split("\n").map(o => ` * ${o}`),