return new Promise(function(resolve, reject) {
// Bind the iterator to the given parent scope
args[args.length - 1] = _.bind(args[args.length - 1], collection);
// Add the array and callback to the arguments
args.unshift(collection.models);
args.push(function(err, result) {
if (err) {
return reject(err);
}
resolve(result);
});
// Call the async method
async[method].apply(async, args);
});
CollectionAsync.prototype[method] = function() {
var deferred = $.Deferred();
var args = _.toArray(arguments);
var collection = this.collection;
// Bind the iterator to the given parent scope
args[args.length - 1] = _.bind(args[args.length - 1], collection);
// Add the array and callback to the arguments
args.unshift(collection.models);
args.push(function(err, result) {
if (err) {
return deferred.rejectWith(collection, err);
}
deferred.resolveWith(collection, result);
});
// Call the async method
async[method].apply(async, args);
return deferred.promise();
}
properties[method] = async.proxy(function() {
// poor man's spread to pull out function args, generator, and callback
var args = [].slice.call(arguments, 0, arguments.length - 2);
var generator = arguments[arguments.length - 2];
var cb = arguments[arguments.length - 1];
if (typeof cb != 'function') {
throw new Error('missing callback function');
}
if (typeof generator != 'function') {
throw new Error('last argument should be a generator function');
}
var _args = []
.concat(args)
.concat(async.fn(generator))
.concat(cb);
_async[method].apply(null, _args);
});