refactor: adjust tsd cfg 2

Author: John Doe

tsdown.base.ts

@@ -19,6 +19,10 @@ export function baseConfig(options: {
     hash: false,
     external: [],
     copy: [
+      {
+        from: `${projectRoot}/package.json`,
+        to: `${projectRoot}/dist/package.json`,
+      },
       {
         from: `${projectRoot}/README.md`,
         to: `${projectRoot}/dist/README.md`,