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Code Editor : react-refresh-runtime.development.js

/** @license React vundefined
 * react-refresh-runtime.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_SCOPE_TYPE = 0xead7;
var REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
var REACT_OFFSCREEN_TYPE = 0xeae2;
var REACT_LEGACY_HIDDEN_TYPE = 0xeae3;
var REACT_CACHE_TYPE = 0xeae4;

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_SCOPE_TYPE = symbolFor('react.scope');
  REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
  REACT_OFFSCREEN_TYPE = symbolFor('react.offscreen');
  REACT_LEGACY_HIDDEN_TYPE = symbolFor('react.legacy_hidden');
  REACT_CACHE_TYPE = symbolFor('react.cache');
}

var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; // We never remove these associations.
// It's OK to reference families, but use WeakMap/Set for types.

var allFamiliesByID = new Map();
var allFamiliesByType = new PossiblyWeakMap();
var allSignaturesByType = new PossiblyWeakMap(); // This WeakMap is read by React, so we only put families
// that have actually been edited here. This keeps checks fast.
// $FlowIssue

var updatedFamiliesByType = new PossiblyWeakMap(); // This is cleared on every performReactRefresh() call.
// It is an array of [Family, NextType] tuples.

var pendingUpdates = []; // This is injected by the renderer via DevTools global hook.

var helpersByRendererID = new Map();
var helpersByRoot = new Map(); // We keep track of mounted roots so we can schedule updates.

var mountedRoots = new Set(); // If a root captures an error, we remember it so we can retry on edit.

var failedRoots = new Set(); // In environments that support WeakMap, we also remember the last element for every root.
// It needs to be weak because we do this even for roots that failed to mount.
// If there is no WeakMap, we won't attempt to do retrying.
// $FlowIssue

var rootElements = // $FlowIssue
typeof WeakMap === 'function' ? new WeakMap() : null;
var isPerformingRefresh = false;

function computeFullKey(signature) {
  if (signature.fullKey !== null) {
    return signature.fullKey;
  }

var fullKey = signature.ownKey;
  var hooks;

try {
    hooks = signature.getCustomHooks();
  } catch (err) {
    // This can happen in an edge case, e.g. if expression like Foo.useSomething
    // depends on Foo which is lazily initialized during rendering.
    // In that case just assume we'll have to remount.
    signature.forceReset = true;
    signature.fullKey = fullKey;
    return fullKey;
  }

for (var i = 0; i < hooks.length; i++) {
    var hook = hooks[i];

if (typeof hook !== 'function') {
      // Something's wrong. Assume we need to remount.
      signature.forceReset = true;
      signature.fullKey = fullKey;
      return fullKey;
    }

var nestedHookSignature = allSignaturesByType.get(hook);

if (nestedHookSignature === undefined) {
      // No signature means Hook wasn't in the source code, e.g. in a library.
      // We'll skip it because we can assume it won't change during this session.
      continue;
    }

var nestedHookKey = computeFullKey(nestedHookSignature);

if (nestedHookSignature.forceReset) {
      signature.forceReset = true;
    }

fullKey += '\n---\n' + nestedHookKey;
  }

signature.fullKey = fullKey;
  return fullKey;
}

function haveEqualSignatures(prevType, nextType) {
  var prevSignature = allSignaturesByType.get(prevType);
  var nextSignature = allSignaturesByType.get(nextType);

if (prevSignature === undefined && nextSignature === undefined) {
    return true;
  }

if (prevSignature === undefined || nextSignature === undefined) {
    return false;
  }

if (computeFullKey(prevSignature) !== computeFullKey(nextSignature)) {
    return false;
  }

if (nextSignature.forceReset) {
    return false;
  }

return true;
}

function isReactClass(type) {
  return type.prototype && type.prototype.isReactComponent;
}

function canPreserveStateBetween(prevType, nextType) {
  if (isReactClass(prevType) || isReactClass(nextType)) {
    return false;
  }

if (haveEqualSignatures(prevType, nextType)) {
    return true;
  }

return false;
}

function resolveFamily(type) {
  // Only check updated types to keep lookups fast.
  return updatedFamiliesByType.get(type);
} // If we didn't care about IE11, we could use new Map/Set(iterable).

function cloneMap(map) {
  var clone = new Map();
  map.forEach(function (value, key) {
    clone.set(key, value);
  });
  return clone;
}

function cloneSet(set) {
  var clone = new Set();
  set.forEach(function (value) {
    clone.add(value);
  });
  return clone;
} // This is a safety mechanism to protect against rogue getters and Proxies.

function getProperty(object, property) {
  try {
    return object[property];
  } catch (err) {
    // Intentionally ignore.
    return undefined;
  }
}

function performReactRefresh() {

if (pendingUpdates.length === 0) {
    return null;
  }

if (isPerformingRefresh) {
    return null;
  }

isPerformingRefresh = true;

try {
    var staleFamilies = new Set();
    var updatedFamilies = new Set();
    var updates = pendingUpdates;
    pendingUpdates = [];
    updates.forEach(function (_ref) {
      var family = _ref[0],
          nextType = _ref[1];
      // Now that we got a real edit, we can create associations
      // that will be read by the React reconciler.
      var prevType = family.current;
      updatedFamiliesByType.set(prevType, family);
      updatedFamiliesByType.set(nextType, family);
      family.current = nextType; // Determine whether this should be a re-render or a re-mount.

if (canPreserveStateBetween(prevType, nextType)) {
        updatedFamilies.add(family);
      } else {
        staleFamilies.add(family);
      }
    }); // TODO: rename these fields to something more meaningful.

var update = {
      updatedFamilies: updatedFamilies,
      // Families that will re-render preserving state
      staleFamilies: staleFamilies // Families that will be remounted

};
    helpersByRendererID.forEach(function (helpers) {
      // Even if there are no roots, set the handler on first update.
      // This ensures that if *new* roots are mounted, they'll use the resolve handler.
      helpers.setRefreshHandler(resolveFamily);
    });
    var didError = false;
    var firstError = null; // We snapshot maps and sets that are mutated during commits.
    // If we don't do this, there is a risk they will be mutated while
    // we iterate over them. For example, trying to recover a failed root
    // may cause another root to be added to the failed list -- an infinite loop.

var failedRootsSnapshot = cloneSet(failedRoots);
    var mountedRootsSnapshot = cloneSet(mountedRoots);
    var helpersByRootSnapshot = cloneMap(helpersByRoot);
    failedRootsSnapshot.forEach(function (root) {
      var helpers = helpersByRootSnapshot.get(root);

if (helpers === undefined) {
        throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
      }

if (!failedRoots.has(root)) {// No longer failed.
      }

if (rootElements === null) {
        return;
      }

if (!rootElements.has(root)) {
        return;
      }

var element = rootElements.get(root);

try {
        helpers.scheduleRoot(root, element);
      } catch (err) {
        if (!didError) {
          didError = true;
          firstError = err;
        } // Keep trying other roots.

}
    });
    mountedRootsSnapshot.forEach(function (root) {
      var helpers = helpersByRootSnapshot.get(root);

if (helpers === undefined) {
        throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
      }

if (!mountedRoots.has(root)) {// No longer mounted.
      }

try {
        helpers.scheduleRefresh(root, update);
      } catch (err) {
        if (!didError) {
          didError = true;
          firstError = err;
        } // Keep trying other roots.

}
    });

if (didError) {
      throw firstError;
    }

return update;
  } finally {
    isPerformingRefresh = false;
  }
}
function register(type, id) {
  {
    if (type === null) {
      return;
    }

if (typeof type !== 'function' && typeof type !== 'object') {
      return;
    } // This can happen in an edge case, e.g. if we register
    // return value of a HOC but it returns a cached component.
    // Ignore anything but the first registration for each type.

if (allFamiliesByType.has(type)) {
      return;
    } // Create family or remember to update it.
    // None of this bookkeeping affects reconciliation
    // until the first performReactRefresh() call above.

var family = allFamiliesByID.get(id);

if (family === undefined) {
      family = {
        current: type
      };
      allFamiliesByID.set(id, family);
    } else {
      pendingUpdates.push([family, type]);
    }

allFamiliesByType.set(type, family); // Visit inner types because we might not have registered them.

if (typeof type === 'object' && type !== null) {
      switch (getProperty(type, '$$typeof')) {
        case REACT_FORWARD_REF_TYPE:
          register(type.render, id + '$render');
          break;

case REACT_MEMO_TYPE:
          register(type.type, id + '$type');
          break;
      }
    }
  }
}
function setSignature(type, key) {
  var forceReset = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
  var getCustomHooks = arguments.length > 3 ? arguments[3] : undefined;

{
    if (!allSignaturesByType.has(type)) {
      allSignaturesByType.set(type, {
        forceReset: forceReset,
        ownKey: key,
        fullKey: null,
        getCustomHooks: getCustomHooks || function () {
          return [];
        }
      });
    } // Visit inner types because we might not have signed them.

if (typeof type === 'object' && type !== null) {
      switch (getProperty(type, '$$typeof')) {
        case REACT_FORWARD_REF_TYPE:
          setSignature(type.render, key, forceReset, getCustomHooks);
          break;

case REACT_MEMO_TYPE:
          setSignature(type.type, key, forceReset, getCustomHooks);
          break;
      }
    }
  }
} // This is lazily called during first render for a type.
// It captures Hook list at that time so inline requires don't break comparisons.

function collectCustomHooksForSignature(type) {
  {
    var signature = allSignaturesByType.get(type);

if (signature !== undefined) {
      computeFullKey(signature);
    }
  }
}
function getFamilyByID(id) {
  {
    return allFamiliesByID.get(id);
  }
}
function getFamilyByType(type) {
  {
    return allFamiliesByType.get(type);
  }
}
function findAffectedHostInstances(families) {
  {
    var affectedInstances = new Set();
    mountedRoots.forEach(function (root) {
      var helpers = helpersByRoot.get(root);

if (helpers === undefined) {
        throw new Error('Could not find helpers for a root. This is a bug in React Refresh.');
      }

if (hook === undefined) {
      // However, if there is no DevTools extension, we'll need to set up the global hook ourselves.
      // Note that in this case it's important that renderer code runs *after* this method call.
      // Otherwise, the renderer will think that there is no global hook, and won't do the injection.
      var nextID = 0;
      globalObject.__REACT_DEVTOOLS_GLOBAL_HOOK__ = hook = {
        renderers: new Map(),
        supportsFiber: true,
        inject: function (injected) {
          return nextID++;
        },
        onScheduleFiberRoot: function (id, root, children) {},
        onCommitFiberRoot: function (id, root, maybePriorityLevel, didError) {},
        onCommitFiberUnmount: function () {}
      };
    }

if (hook.isDisabled) {
      // This isn't a real property on the hook, but it can be set to opt out
      // of DevTools integration and associated warnings and logs.
      // Using console['warn'] to evade Babel and ESLint
      console['warn']('Something has shimmed the React DevTools global hook (__REACT_DEVTOOLS_GLOBAL_HOOK__). ' + 'Fast Refresh is not compatible with this shim and will be disabled.');
      return;
    } // Here, we just want to get a reference to scheduleRefresh.

var oldInject = hook.inject;

hook.inject = function (injected) {
      var id = oldInject.apply(this, arguments);

if (typeof injected.scheduleRefresh === 'function' && typeof injected.setRefreshHandler === 'function') {
        // This version supports React Refresh.
        helpersByRendererID.set(id, injected);
      }

return id;
    }; // Do the same for any already injected roots.
    // This is useful if ReactDOM has already been initialized.
    // https://github.com/facebook/react/issues/17626

hook.renderers.forEach(function (injected, id) {
      if (typeof injected.scheduleRefresh === 'function' && typeof injected.setRefreshHandler === 'function') {
        // This version supports React Refresh.
        helpersByRendererID.set(id, injected);
      }
    }); // We also want to track currently mounted roots.

var oldOnCommitFiberRoot = hook.onCommitFiberRoot;

var oldOnScheduleFiberRoot = hook.onScheduleFiberRoot || function () {};

hook.onScheduleFiberRoot = function (id, root, children) {
      if (!isPerformingRefresh) {
        // If it was intentionally scheduled, don't attempt to restore.
        // This includes intentionally scheduled unmounts.
        failedRoots.delete(root);

if (rootElements !== null) {
          rootElements.set(root, children);
        }
      }

return oldOnScheduleFiberRoot.apply(this, arguments);
    };

hook.onCommitFiberRoot = function (id, root, maybePriorityLevel, didError) {
      var helpers = helpersByRendererID.get(id);

if (helpers !== undefined) {
        helpersByRoot.set(root, helpers);
        var current = root.current;
        var alternate = current.alternate; // We need to determine whether this root has just (un)mounted.
        // This logic is copy-pasted from similar logic in the DevTools backend.
        // If this breaks with some refactoring, you'll want to update DevTools too.

if (alternate !== null) {
          var wasMounted = alternate.memoizedState != null && alternate.memoizedState.element != null;
          var isMounted = current.memoizedState != null && current.memoizedState.element != null;

if (!wasMounted && isMounted) {
            // Mount a new root.
            mountedRoots.add(root);
            failedRoots.delete(root);
          } else if (wasMounted && isMounted) ; else if (wasMounted && !isMounted) {
            // Unmount an existing root.
            mountedRoots.delete(root);

if (didError) {
              // We'll remount it on future edits.
              failedRoots.add(root);
            } else {
              helpersByRoot.delete(root);
            }
          } else if (!wasMounted && !isMounted) {
            if (didError) {
              // We'll remount it on future edits.
              failedRoots.add(root);
            }
          }
        } else {
          // Mount a new root.
          mountedRoots.add(root);
        }
      } // Always call the decorated DevTools hook.

return oldOnCommitFiberRoot.apply(this, arguments);
    };
  }
}
function hasUnrecoverableErrors() {
  // TODO: delete this after removing dependency in RN.
  return false;
} // Exposed for testing.

function createSignatureFunctionForTransform() {
  {
    var savedType;
    var hasCustomHooks;
    var didCollectHooks = false;
    return function (type, key, forceReset, getCustomHooks) {
      if (typeof key === 'string') {
        // We're in the initial phase that associates signatures
        // with the functions. Note this may be called multiple times
        // in HOC chains like _s(hoc1(_s(hoc2(_s(actualFunction))))).
        if (!savedType) {
          // We're in the innermost call, so this is the actual type.
          savedType = type;
          hasCustomHooks = typeof getCustomHooks === 'function';
        } // Set the signature for all types (even wrappers!) in case
        // they have no signatures of their own. This is to prevent
        // problems like https://github.com/facebook/react/issues/20417.

if (type != null && (typeof type === 'function' || typeof type === 'object')) {
          setSignature(type, key, forceReset, getCustomHooks);
        }

return type;
      } else {
        // We're in the _s() call without arguments, which means
        // this is the time to collect custom Hook signatures.
        // Only do this once. This path is hot and runs *inside* every render!
        if (!didCollectHooks && hasCustomHooks) {
          didCollectHooks = true;
          collectCustomHooksForSignature(savedType);
        }
      }
    };
  }
}
function isLikelyComponentType(type) {
  {
    switch (typeof type) {
      case 'function':
        {
          // First, deal with classes.
          if (type.prototype != null) {
            if (type.prototype.isReactComponent) {
              // React class.
              return true;
            }

var ownNames = Object.getOwnPropertyNames(type.prototype);

if (ownNames.length > 1 || ownNames[0] !== 'constructor') {
              // This looks like a class.
              return false;
            } // eslint-disable-next-line no-proto

if (type.prototype.__proto__ !== Object.prototype) {
              // It has a superclass.
              return false;
            } // Pass through.
            // This looks like a regular function with empty prototype.

} // For plain functions and arrows, use name as a heuristic.

var name = type.name || type.displayName;
          return typeof name === 'string' && /^[A-Z]/.test(name);
        }

case 'object':
        {
          if (type != null) {
            switch (getProperty(type, '$$typeof')) {
              case REACT_FORWARD_REF_TYPE:
              case REACT_MEMO_TYPE:
                // Definitely React components.
                return true;

default:
                return false;
            }
          }

return false;
        }

default:
        {
          return false;
        }
    }
  }
}

exports._getMountedRootCount = _getMountedRootCount;
exports.collectCustomHooksForSignature = collectCustomHooksForSignature;
exports.createSignatureFunctionForTransform = createSignatureFunctionForTransform;
exports.findAffectedHostInstances = findAffectedHostInstances;
exports.getFamilyByID = getFamilyByID;
exports.getFamilyByType = getFamilyByType;
exports.hasUnrecoverableErrors = hasUnrecoverableErrors;
exports.injectIntoGlobalHook = injectIntoGlobalHook;
exports.isLikelyComponentType = isLikelyComponentType;
exports.performReactRefresh = performReactRefresh;
exports.register = register;
exports.setSignature = setSignature;
  })();
}

${this.title}

Code Editor : react-refresh-runtime.development.js