refactor(build): tweak build script

package.json

@@ -11,11 +11,11 @@
     "lint": "tslint --project tsconfig.json",
     "docs:lint": "documentation lint dist/**",
     "docs:deploy": "npm run docs && cp -r .circleci docs && gh-pages -d docs -t",
-    "docs": "rm -rf docs/ dist/ && npm run dev && documentation build dist/** -f html -o docs",
+    "docs": "npm run dev && documentation build dist/** -f html -o docs",
     "build": "npm run dev && bili --format cjs --filename '[name].js' --exports 'named'",
-    "dev": "rm -rf dist/ libs/ && tsc",
+    "dev": "tsc",
     "test:unit": "jest",
-    "postversion": "npm run build && npm run docs:deploy",
+    "postversion": "rm -rf dist/ libs/ && npm run build && npm run docs:deploy",
     "postbuild": "cp dist/*.d.ts libs"
   },
   "author": "Army-U <[email protected]>",