var env = require('../').env; console.log('environment: %s', env.type); var col; switch (env.type) { case 'node': col = require('./collection/node'); break; case 'mongo': col = require('./collection/mongo'); break; case 'browser': col = require('./collection/browser'); break; default: throw new Error('missing collection implementation for environment: ' + env.type); } module.exports = exports = col;