graphbrainz/lib/context.js

'use strict';

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

var _loaders = require('./loaders');

var _loaders2 = _interopRequireDefault(_loaders);

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

var debug = require('debug')('graphbrainz:context');

function extendContext(extension, context, options) {
  if (extension.extendContext) {
    if (typeof extension.extendContext === 'function') {
      debug('Extending context via a function from the \u201C' + extension.name + '\u201D extension.');
      context = extension.extendContext(context, options);
    } else {
      throw new Error('Extension \u201C' + extension.name + '\u201D contains an invalid `extendContext` ' + ('value: ' + extension.extendContext));
    }
  }
  return context;
}

function createContext(options) {
  var client = options.client;

  var loaders = (0, _loaders2.default)(client);
  var context = { client: client, loaders: loaders };
  return options.extensions.reduce(function (context, extension) {
    return extendContext(extension, context, options);
  }, context);
}