Javascript 与Browserify绑定时是否需要加密Browserify和Browserify Zib？

我使用browserify捆绑我的代码，它工作得很好。但是束的大小非常大。我曾经检查过包的大小，发现Crypto Browserify和Browserify Zib占据了几乎一半的大小。我很确定我的代码中不需要它们，这是我的package.json，看起来它们也不使用这两个库。有什么想法吗

"devDependencies": {
  "bower-files": "^3.11.3",
  "browser-sync": "^2.11.1",
  "browserify": "^13.0.0",
  "browserify-shim": "^3.8.12",
  "clamp-js": "^0.7.0",
  "gulp": "^3.9.0",
  "gulp-clean": "^0.3.1",
  "gulp-concat": "^2.6.0",
  "gulp-eslint": "^1.1.1",
  "gulp-minify-css": "^1.2.3",
  "gulp-rev": "^6.0.1",
  "gulp-sass": "^2.1.1",
  "gulp-scss-lint": "^0.3.9",
  "gulp-sync": "^0.1.4",
  "gulp-tmod": "^1.0.3",
  "gulp-uglifyjs": "^0.6.2",
  "jquery": "^2.2.0",
  "jquery-lazyload": "^1.9.7",
  "jquery-qrcode": "^1.0.0",
  "moment": "^2.11.1",
  "raven": "^0.10.0",
  "vinyl-source-stream": "^1.1.0",
  "zeptojs": "^1.1.4"
},