lag.sortby/index.js

The lag function sortby() as a standalone module.

var register = require('lag.register');
var map = require('lag.map');
var promise = require('lag.promise');

// Sort in ascending order
module.exports = register('sortBy', function (handler, promises) {
  return map(handler, promises).then(function (values) {
    return promise(values.sort(function (a, b) {
      return a - b;
    }));
  });
});