graph-resolver/dist/index.js

Graph Resolver resolves a value or a list of values of a model to another, provided their intermediaries have defined relationships.

'use strict';

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

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

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

var _bluebird = require('bluebird');

var _bluebird2 = _interopRequireDefault(_bluebird);

var _utilities = require('./utilities');

var _graph = require('./graph');

var Resolver = function Resolver(relationships) {
	if (!(0, _lodash2['default'])(relationships).map(_graph.validateRelationship).every(Boolean)) {
		throw new Error('Invalid Relationship');
	}
	this.graph = (0, _graph.setupGraph)(relationships);
};

Resolver.prototype.resolve = function (value, source, destination) {
	var methods = undefined;
	try {
		methods = (0, _graph.getPath)(this.graph, source, destination);
	} catch (error) {
		return _bluebird2['default'].reject(new Error('Invalid Arguments'));
	}

	return (0, _utilities.chainThenables)(methods, value);
};

exports['default'] = Resolver;
module.exports = exports['default'];