build: move creation of package.json to postbuild

Author: swiing

package.json

@@ -19,11 +19,12 @@
     "test": "test"
   },
   "scripts": {
-    "build": "npm run build:cjs && npm run build:esm && npm run build:types && bash ./scripts/build.sh",
+    "build": "npm run build:cjs && npm run build:esm && npm run build:types",
     "build:cjs": "tsc -p tsconfig.cjs.json",
     "build:esm": "tsc -p tsconfig.esm.json",
     "build:types": "tsc --emitDeclarationOnly -p tsconfig.json",
     "example": "node --loader ts-node/esm example",
+    "postbuild": "bash ./scripts/postbuild.sh",
     "prepare": "npm run build",
     "prepublishOnly": "npm run test",
     "test": "node --loader ts-node/esm test"