yamadapc

var Promise = require('bluebird');
    _ = require('lodash');

/**
 * Map an object, or a promise of an object, with the given `mapper` function
 * with the signature `(value, key, obj)` where `value` is an object's `key`
 * property's value.
 *
 * If the `mapper` function returns promises or thenables, the returned promise
 * will wait for all the mapped results to be resolved as well.