exports.vendor = std_import('core.vendor')
exports.trait = std_import('core.trait').trait
exports.mixin = std_import('core.mixin').mixin
exports.object = std_import('core.object').object
exports.array = std_import('core.array').array
exports.string = std_import('core.string').string
exports.number = std_import('core.number').number
exports.utility = std_import('core.utility').utility
exports.base = std_import('core.base').base
exports.event_emitter = require('events').EventEmitter#std_import('core.event_emitter').event_emitter
exports.collection = std_import('core.collection').collection