text: 'use strict';
  
  var _jestMatcherUtils = require('jest-matcher-utils');
  
  var utils = _interopRequireWildcard(_jestMatcherUtils);
  
  var _matchers = require('./matchers');
  
  var _matchers2 = _interopRequireDefault(_matchers);
  
  var _spy_matchers = require('./spy_matchers');
  
  var _spy_matchers2 = _interopRequireDefault(_spy_matchers);
  
  var _to_throw_matchers = require('./to_throw_matchers');
  
  var _to_throw_matchers2 = _interopRequireDefault(_to_throw_matchers);
  
  var _jasmine_utils = require('./jasmine_utils');
  
  var _asymmetric_matchers = require('./asymmetric_matchers');
  
  var _jest_matchers_object = require('./jest_matchers_object');
  
  var _extract_expected_assertions_errors = require('./extract_expected_assertions_errors');
  
  var _extract_expected_assertions_errors2 = _interopRequireDefault(_extract_expected_assertions_errors);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
  
  class JestAssertionError extends Error {} /**
                                             * Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
                                             *
                                             * This source code is licensed under the MIT license found in the
                                             * LICENSE file in the root directory of this source tree.
                                             *
                                             * 
                                             */
  
  const isPromise = obj => {
    return !!obj && (typeof obj === 'object' || typeof obj === 'function') && typeof obj.then === 'function';
  };
  
  const createToThrowErrorMatchingSnapshotMatcher = function (matcher) {
    return function (received, testName) {
      return matcher.apply(this, [received, testName, true]);
    };
  };
  
  const getPromiseMatcher = (name, matcher) => {
    if (name === 'toThrow' || name === 'toThrowError') {
      return (0, _to_throw_matchers.createMatcher)('.' + name, true);
    } else if (name === 'toThrowErrorMatchingSnapshot') {
      return createToThrowErrorMatchingSnapshotMatcher(matcher);
    }
  
    return null;
  };
  
  const expect = function (actual) {
    if ((arguments.length <= 1 ? 0 : arguments.length - 1) !== 0) {
      throw new Error('Expect takes at most one argument.');
    }
  
    const allMatchers = (0, _jest_matchers_object.getMatchers)();
    const expectation = {
      not: {},
      rejects: { not: {} },
      resolves: { not: {} }
    };
  
    Object.keys(allMatchers).forEach(name => {
      const matcher = allMatchers[name];
      const promiseMatcher = getPromiseMatcher(name, matcher) || matcher;
      expectation[name] = makeThrowingMatcher(matcher, false, actual);
      expectation.not[name] = makeThrowingMatcher(matcher, true, actual);
  
      expectation.resolves[name] = makeResolveMatcher(name, promiseMatcher, false, actual);
      expectation.resolves.not[name] = makeResolveMatcher(name, promiseMatcher, true, actual);
  
      expectation.rejects[name] = makeRejectMatcher(name, promiseMatcher, false, actual);
      expectation.rejects.not[name] = makeRejectMatcher(name, promiseMatcher, true, actual);
    });
  
    return expectation;
  };
  
  const getMessage = message => {
    return message && message() || utils.RECEIVED_COLOR('No message was specified for this matcher.');
  };
  
  const makeResolveMatcher = (matcherName, matcher, isNot, actual) => function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }
  
    const matcherStatement = `.resolves.${isNot ? 'not.' : ''}${matcherName}`;
    if (!isPromise(actual)) {
      throw new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `${utils.RECEIVED_COLOR('received')} value must be a Promise.\n` + utils.printWithType('Received', actual, utils.printReceived));
    }
  
    return actual.then(result => makeThrowingMatcher(matcher, isNot, result).apply(null, args), reason => {
      const err = new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `Expected ${utils.RECEIVED_COLOR('received')} Promise to resolve, ` + 'instead it rejected to value\n' + `  ${utils.printReceived(reason)}`);
      return Promise.reject(err);
    });
  };
  
  const makeRejectMatcher = (matcherName, matcher, isNot, actual) => function () {
    for (var _len2 = arguments.length, args = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
      args[_key2] = arguments[_key2];
    }
  
    const matcherStatement = `.rejects.${isNot ? 'not.' : ''}${matcherName}`;
    if (!isPromise(actual)) {
      throw new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `${utils.RECEIVED_COLOR('received')} value must be a Promise.\n` + utils.printWithType('Received', actual, utils.printReceived));
    }
  
    return actual.then(result => {
      const err = new JestAssertionError(utils.matcherHint(matcherStatement, 'received', '') + '\n\n' + `Expected ${utils.RECEIVED_COLOR('received')} Promise to reject, ` + 'instead it resolved to value\n' + `  ${utils.printReceived(result)}`);
      return Promise.reject(err);
    }, reason => makeThrowingMatcher(matcher, isNot, reason).apply(null, args));
  };
  
  const makeThrowingMatcher = (matcher, isNot, actual) => {
    return function throwingMatcher() {
      let throws = true;
      const matcherContext = Object.assign(
      // When throws is disabled, the matcher will not throw errors during test
      // execution but instead add them to the global matcher state. If a
      // matcher throws, test execution is normally stopped immediately. The
      // snapshot matcher uses it because we want to log all snapshot
      // failures in a test.
      { dontThrow: () => throws = false }, (0, _jest_matchers_object.getState)(), {
        equals: _jasmine_utils.equals,
        isNot,
        utils
      });
      let result;
  
      try {
        for (var _len3 = arguments.length, args = Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
          args[_key3] = arguments[_key3];
        }
  
        result = matcher.apply(matcherContext, [actual].concat(args));
      } catch (error) {
        if (matcher[_jest_matchers_object.INTERNAL_MATCHER_FLAG] === true && !(error instanceof JestAssertionError) && error.name !== 'PrettyFormatPluginError' &&
        // Guard for some environments (browsers) that do not support this feature.
        Error.captureStackTrace) {
          // Try to remove this and deeper functions from the stack trace frame.
          Error.captureStackTrace(error, throwingMatcher);
        }
        throw error;
      }
  
      _validateResult(result);
  
      (0, _jest_matchers_object.getState)().assertionCalls++;
  
      if (result.pass && isNot || !result.pass && !isNot) {
        // XOR
        const message = getMessage(result.message);
        const error = new JestAssertionError(message);
        // Passing the result of the matcher with the error so that a custom
        // reporter could access the actual and expected objects of the result
        // for example in order to display a custom visual diff
        error.matcherResult = result;
        // Try to remove this function from the stack trace frame.
        // Guard for some environments (browsers) that do not support this feature.
        if (Error.captureStackTrace) {
          Error.captureStackTrace(error, throwingMatcher);
        }
  
        if (throws) {
          throw error;
        } else {
          (0, _jest_matchers_object.getState)().suppressedErrors.push(error);
        }
      }
    };
  };
  
  expect.extend = matchers => (0, _jest_matchers_object.setMatchers)(matchers, false, expect);
  
  expect.anything = _asymmetric_matchers.anything;
  expect.any = _asymmetric_matchers.any;
  
  expect.not = {
    arrayContaining: _asymmetric_matchers.arrayNotContaining,
    objectContaining: _asymmetric_matchers.objectNotContaining,
    stringContaining: _asymmetric_matchers.stringNotContaining,
    stringMatching: _asymmetric_matchers.stringNotMatching
  };
  
  expect.objectContaining = _asymmetric_matchers.objectContaining;
  expect.arrayContaining = _asymmetric_matchers.arrayContaining;
  expect.stringContaining = _asymmetric_matchers.stringContaining;
  expect.stringMatching = _asymmetric_matchers.stringMatching;
  
  const _validateResult = result => {
    if (typeof result !== 'object' || typeof result.pass !== 'boolean' || result.message && typeof result.message !== 'string' && typeof result.message !== 'function') {
      throw new Error('Unexpected return from a matcher function.\n' + 'Matcher functions should ' + 'return an object in the following format:\n' + '  {message?: string | function, pass: boolean}\n' + `'${utils.stringify(result)}' was returned`);
    }
  };
  
  // add default jest matchers
  (0, _jest_matchers_object.setMatchers)(_matchers2.default, true, expect);
  (0, _jest_matchers_object.setMatchers)(_spy_matchers2.default, true, expect);
  (0, _jest_matchers_object.setMatchers)(_to_throw_matchers2.default, true, expect);
  
  expect.addSnapshotSerializer = () => void 0;
  expect.assertions = expected => {
    (0, _jest_matchers_object.getState)().expectedAssertionsNumber = expected;
  };
  expect.hasAssertions = expected => {
    utils.ensureNoExpected(expected, '.hasAssertions');
    (0, _jest_matchers_object.getState)().isExpectingAssertions = true;
  };
  expect.getState = _jest_matchers_object.getState;
  expect.setState = _jest_matchers_object.setState;
  expect.extractExpectedAssertionsErrors = _extract_expected_assertions_errors2.default;
  
  module.exports = expect;