index.js

var jade = require('jade');

// compile
var fn = jade.compile('p string of jade');

console.log(fn());

package.json

{
  "name": "foo",
  "version": "0.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "browserify": "browserify -o ./browserified.js ./index.js",
    "uglify": "uglifyjs -o ./uglified.js ./browserified.js",
    "test": "npm run browserify && npm run uglify && node ./uglified.js"
  },
  "author": "",
  "license": "MIT",
  "devDependencies": {
    "browserify": "^5.10.1",
    "uglify-js": "^2.4.15"
  },
  "dependencies": {
    "jade": "^1.5.0"
  }
}

z.sh

npm install
npm test
du -h browserified.js
du -h uglified.js