graphql-mocks/es/relay/wrapper.js

Tools for setting up graphql test resolvers

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

import 'graphql';
import { createWrapper } from '../resolver/create-wrapper.js';
import { coerceToList } from '../resolver/utils/coerce-to-list.js';
import { isRelayConnectionField } from './is-relay-connection-field.js';
import { paginateNodes } from './paginate-nodes.js';

var relayWrapper = (_ref) => {
  var _force;

  var {
    cursorForNode,
    force
  } = _ref;
  force = (_force = force) !== null && _force !== void 0 ? _force : false;

  if (!cursorForNode) {
    throw new Error('cursorForNode is a required, provide it as an option to `relayWrapper`');
  }

  return createWrapper('relay-wrapper', 'FIELD', resolver => {
    return /*#__PURE__*/function () {
      var _ref2 = _asyncToGenerator(function* (parent, args, context, info) {
        var {
          fieldName,
          parentType
        } = info;
        var field = parentType.getFields()[fieldName];
        var isRelayPaginated = isRelayConnectionField(field);
        var result = yield resolver(parent, args, context, info);

        if (force || isRelayPaginated) {
          var nodes = coerceToList(result);
          return nodes && paginateNodes(nodes, args, cursorForNode);
        }

        return result;
      });

      return function (_x, _x2, _x3, _x4) {
        return _ref2.apply(this, arguments);
      };
    }();
  });
};

export { relayWrapper };
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