@dillonkearns/elm-graphql/examples/src/subscription/node_modules/graphql/graphql.js

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'use strict';

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

var _parser = require('./language/parser');

var _validate = require('./validation/validate');

var _execute = require('./execution/execute');

/**
 * This is the primary entry point function for fulfilling GraphQL operations
 * by parsing, validating, and executing a GraphQL document along side a
 * GraphQL schema.
 *
 * More sophisticated GraphQL servers, such as those which persist queries,
 * may wish to separate the validation and execution phases to a static time
 * tooling step, and a server runtime step.
 *
 * Accepts either an object with named arguments, or individual arguments:
 *
 * schema:
 *    The GraphQL type system to use when validating and executing a query.
 * source:
 *    A GraphQL language formatted string representing the requested operation.
 * rootValue:
 *    The value provided as the first argument to resolver functions on the top
 *    level type (e.g. the query object type).
 * variableValues:
 *    A mapping of variable name to runtime value to use for all variables
 *    defined in the requestString.
 * operationName:
 *    The name of the operation to use if requestString contains multiple
 *    possible operations. Can be omitted if requestString contains only
 *    one operation.
 * fieldResolver:
 *    A resolver function to use when one is not provided by the schema.
 *    If not provided, the default field resolver is used (which looks for a
 *    value or method on the source value with the field's name).
 */

/* eslint-disable no-redeclare */
function graphql(argsOrSchema, source, rootValue, contextValue, variableValues, operationName, fieldResolver) {
  // Extract arguments from object args if provided.
  return arguments.length === 1 ? graphqlImpl(argsOrSchema.schema, argsOrSchema.source, argsOrSchema.rootValue, argsOrSchema.contextValue, argsOrSchema.variableValues, argsOrSchema.operationName, argsOrSchema.fieldResolver) : graphqlImpl(argsOrSchema, source, rootValue, contextValue, variableValues, operationName, fieldResolver);
} /**
   * Copyright (c) 2015-present, Facebook, Inc.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   *
   * 
   */

function graphqlImpl(schema, source, rootValue, contextValue, variableValues, operationName, fieldResolver) {
  return new Promise(function (resolve) {
    // Parse
    var document = void 0;
    try {
      document = (0, _parser.parse)(source);
    } catch (syntaxError) {
      return resolve({ errors: [syntaxError] });
    }

    // Validate
    var validationErrors = (0, _validate.validate)(schema, document);
    if (validationErrors.length > 0) {
      return resolve({ errors: validationErrors });
    }

    // Execute
    resolve((0, _execute.execute)(schema, document, rootValue, contextValue, variableValues, operationName, fieldResolver));
  });
}