allow conditionals to chain
allow conditionals to chain

whitneyit/builder,jrauschenbusch/builder,alexisvincent/builder,systemjs/builder,alexisvincent/builder,systemjs/builder,lookfirst/builder,whitneyit/builder,alexisvincent/builder,jrauschenbusch/builder,jrauschenbusch/builder,systemjs/builder,lookfirst/builder