HomeWork/react2/node_modules/react-is/cjs/react-is.development.js

/** @license React v17.0.2
 * react-is.development.js
 *
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

'use strict';

if (process.env.NODE_ENV !== "production") {
  (function() {
'use strict';

// ATTENTION
// When adding new symbols to this file,
// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
// nor polyfill, then a plain number is used for performance.
var REACT_ELEMENT_TYPE = 0xeac7;
var REACT_PORTAL_TYPE = 0xeaca;
var REACT_FRAGMENT_TYPE = 0xeacb;
var REACT_STRICT_MODE_TYPE = 0xeacc;
var REACT_PROFILER_TYPE = 0xead2;
var REACT_PROVIDER_TYPE = 0xeacd;
var REACT_CONTEXT_TYPE = 0xeace;
var REACT_FORWARD_REF_TYPE = 0xead0;
var REACT_SUSPENSE_TYPE = 0xead1;
var REACT_SUSPENSE_LIST_TYPE = 0xead8;
var REACT_MEMO_TYPE = 0xead3;
var REACT_LAZY_TYPE = 0xead4;
var REACT_BLOCK_TYPE = 0xead9;
var REACT_SERVER_BLOCK_TYPE = 0xeada;
var REACT_FUNDAMENTAL_TYPE = 0xead5;
var REACT_SCOPE_TYPE = 0xead7;
var REACT_OPAQUE_ID_TYPE = 0xeae0;
var REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
var REACT_OFFSCREEN_TYPE = 0xeae2;
var REACT_LEGACY_HIDDEN_TYPE = 0xeae3;

if (typeof Symbol === 'function' && Symbol.for) {
  var symbolFor = Symbol.for;
  REACT_ELEMENT_TYPE = symbolFor('react.element');
  REACT_PORTAL_TYPE = symbolFor('react.portal');
  REACT_FRAGMENT_TYPE = symbolFor('react.fragment');
  REACT_STRICT_MODE_TYPE = symbolFor('react.strict_mode');
  REACT_PROFILER_TYPE = symbolFor('react.profiler');
  REACT_PROVIDER_TYPE = symbolFor('react.provider');
  REACT_CONTEXT_TYPE = symbolFor('react.context');
  REACT_FORWARD_REF_TYPE = symbolFor('react.forward_ref');
  REACT_SUSPENSE_TYPE = symbolFor('react.suspense');
  REACT_SUSPENSE_LIST_TYPE = symbolFor('react.suspense_list');
  REACT_MEMO_TYPE = symbolFor('react.memo');
  REACT_LAZY_TYPE = symbolFor('react.lazy');
  REACT_BLOCK_TYPE = symbolFor('react.block');
  REACT_SERVER_BLOCK_TYPE = symbolFor('react.server.block');
  REACT_FUNDAMENTAL_TYPE = symbolFor('react.fundamental');
  REACT_SCOPE_TYPE = symbolFor('react.scope');
  REACT_OPAQUE_ID_TYPE = symbolFor('react.opaque.id');
  REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
  REACT_OFFSCREEN_TYPE = symbolFor('react.offscreen');
  REACT_LEGACY_HIDDEN_TYPE = symbolFor('react.legacy_hidden');
}

// Filter certain DOM attributes (e.g. src, href) if their values are empty strings.

var enableScopeAPI = false; // Experimental Create Event Handle API.

function isValidElementType(type) {
  if (typeof type === 'string' || typeof type === 'function') {
    return true;
  } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill).


  if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || type === REACT_DEBUG_TRACING_MODE_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || type === REACT_LEGACY_HIDDEN_TYPE || enableScopeAPI ) {
    return true;
  }

  if (typeof type === 'object' && type !== null) {
    if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_BLOCK_TYPE || type[0] === REACT_SERVER_BLOCK_TYPE) {
      return true;
    }
  }

  return false;
}

function typeOf(object) {
  if (typeof object === 'object' && object !== null) {
    var $$typeof = object.$$typeof;

    switch ($$typeof) {
      case REACT_ELEMENT_TYPE:
        var type = object.type;

        switch (type) {
          case REACT_FRAGMENT_TYPE:
          case REACT_PROFILER_TYPE:
          case REACT_STRICT_MODE_TYPE:
          case REACT_SUSPENSE_TYPE:
          case REACT_SUSPENSE_LIST_TYPE:
            return type;

          default:
            var $$typeofType = type && type.$$typeof;

            switch ($$typeofType) {
              case REACT_CONTEXT_TYPE:
              case REACT_FORWARD_REF_TYPE:
              case REACT_LAZY_TYPE:
              case REACT_MEMO_TYPE:
              case REACT_PROVIDER_TYPE:
                return $$typeofType;

              default:
                return $$typeof;
            }

        }

      case REACT_PORTAL_TYPE:
        return $$typeof;
    }
  }

  return undefined;
}
var ContextConsumer = REACT_CONTEXT_TYPE;
var ContextProvider = REACT_PROVIDER_TYPE;
var Element = REACT_ELEMENT_TYPE;
var ForwardRef = REACT_FORWARD_REF_TYPE;
var Fragment = REACT_FRAGMENT_TYPE;
var Lazy = REACT_LAZY_TYPE;
var Memo = REACT_MEMO_TYPE;
var Portal = REACT_PORTAL_TYPE;
var Profiler = REACT_PROFILER_TYPE;
var StrictMode = REACT_STRICT_MODE_TYPE;
var Suspense = REACT_SUSPENSE_TYPE;
var hasWarnedAboutDeprecatedIsAsyncMode = false;
var hasWarnedAboutDeprecatedIsConcurrentMode = false; // AsyncMode should be deprecated

function isAsyncMode(object) {
  {
    if (!hasWarnedAboutDeprecatedIsAsyncMode) {
      hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint

      console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 18+.');
    }
  }

  return false;
}
function isConcurrentMode(object) {
  {
    if (!hasWarnedAboutDeprecatedIsConcurrentMode) {
      hasWarnedAboutDeprecatedIsConcurrentMode = true; // Using console['warn'] to evade Babel and ESLint

      console['warn']('The ReactIs.isConcurrentMode() alias has been deprecated, ' + 'and will be removed in React 18+.');
    }
  }

  return false;
}
function isContextConsumer(object) {
  return typeOf(object) === REACT_CONTEXT_TYPE;
}
function isContextProvider(object) {
  return typeOf(object) === REACT_PROVIDER_TYPE;
}
function isElement(object) {
  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
}
function isForwardRef(object) {
  return typeOf(object) === REACT_FORWARD_REF_TYPE;
}
function isFragment(object) {
  return typeOf(object) === REACT_FRAGMENT_TYPE;
}
function isLazy(object) {
  return typeOf(object) === REACT_LAZY_TYPE;
}
function isMemo(object) {
  return typeOf(object) === REACT_MEMO_TYPE;
}
function isPortal(object) {
  return typeOf(object) === REACT_PORTAL_TYPE;
}
function isProfiler(object) {
  return typeOf(object) === REACT_PROFILER_TYPE;
}
function isStrictMode(object) {
  return typeOf(object) === REACT_STRICT_MODE_TYPE;
}
function isSuspense(object) {
  return typeOf(object) === REACT_SUSPENSE_TYPE;
}

exports.ContextConsumer = ContextConsumer;
exports.ContextProvider = ContextProvider;
exports.Element = Element;
exports.ForwardRef = ForwardRef;
exports.Fragment = Fragment;
exports.Lazy = Lazy;
exports.Memo = Memo;
exports.Portal = Portal;
exports.Profiler = Profiler;
exports.StrictMode = StrictMode;
exports.Suspense = Suspense;
exports.isAsyncMode = isAsyncMode;
exports.isConcurrentMode = isConcurrentMode;
exports.isContextConsumer = isContextConsumer;
exports.isContextProvider = isContextProvider;
exports.isElement = isElement;
exports.isForwardRef = isForwardRef;
exports.isFragment = isFragment;
exports.isLazy = isLazy;
exports.isMemo = isMemo;
exports.isPortal = isPortal;
exports.isProfiler = isProfiler;
exports.isStrictMode = isStrictMode;
exports.isSuspense = isSuspense;
exports.isValidElementType = isValidElementType;
exports.typeOf = typeOf;
  })();
}