patternplate-client/application/actions/handle-dependent-actions.js

Universal javascript client application for patternplate

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});

var _keys = require('babel-runtime/core-js/object/keys');

var _keys2 = _interopRequireDefault(_keys);

var _slicedToArray2 = require('babel-runtime/helpers/slicedToArray');

var _slicedToArray3 = _interopRequireDefault(_slicedToArray2);

var _entries = require('babel-runtime/core-js/object/entries');

var _entries2 = _interopRequireDefault(_entries);

var _assert = require('assert');

var _assert2 = _interopRequireDefault(_assert);

var _reduxActions = require('redux-actions');

var _lodash = require('lodash');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

exports.default = handleDependentActions;


function partialReduce(deps) {
	return function (handlers) {
		return (0, _entries2.default)(handlers).reduce(function (registry, entry) {
			var _entry = (0, _slicedToArray3.default)(entry, 2),
			    name = _entry[0],
			    fn = _entry[1];

			registry[name] = function (state, action) {
				return fn(state, action, deps);
			};
			return registry;
		}, {});
	};
}

function handleDependentActions(actionHandlers, options) {
	_assert2.default.ok(Array.isArray(options.dependencies), 'options.dependencies must be an array');

	var handler = function handler() {
		for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
			args[_key] = arguments[_key];
		}

		var _args$ = args[2],
		    dependencies = _args$ === undefined ? {} : _args$;


		if ((0, _keys2.default)(dependencies).length > 0) {
			var missing = options.dependencies.filter(function (dependency) {
				return !(dependency in dependencies);
			});
			_assert2.default.ok(missing.length === 0, 'dependencies must be present in state. missing: ' + missing.join(','));
		}

		var deps = (0, _lodash.pick)(dependencies, options.dependencies);
		var handlers = partialReduce(deps)(actionHandlers);
		var reducer = (0, _reduxActions.handleActions)(handlers, options.defaultValue);
		return reducer.apply(undefined, args);
	};
	handler.dependencies = options.dependencies;
	return handler;
}
module.exports = exports['default'];
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