Browserify not reading package.json?

README.md

Works:

./node_modules/.bin/browserify -t [reactify --es6] src/frontend/index.js 

Does not work:

./node_modules/.bin/browserify src/frontend.index.js

The second one according to the error message is not using reactify transform.

package.json

{
 "browserify": {
    "transform": [
      ["reactify", { "es6": true }]
    ]   
  }
}