jotai/utils.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var jotai = require('jotai');
var react = require('react');

var RESET = Symbol();

function atomWithReset(initialValue) {
  var anAtom = jotai.atom(initialValue, function (get, set, update) {
    if (update === RESET) {
      set(anAtom, initialValue);
    } else {
      set(anAtom, typeof update === 'function' ? update(get(anAtom)) : update);
    }
  });
  return anAtom;
}

function _regeneratorRuntime() {
  /*! regenerator-runtime -- Copyright (c) 2014-present, Facebook, Inc. -- license (MIT): https://github.com/facebook/regenerator/blob/main/LICENSE */

  _regeneratorRuntime = function () {
    return exports;
  };

  var exports = {},
      Op = Object.prototype,
      hasOwn = Op.hasOwnProperty,
      $Symbol = "function" == typeof Symbol ? Symbol : {},
      iteratorSymbol = $Symbol.iterator || "@@iterator",
      asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator",
      toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";

  function define(obj, key, value) {
    return Object.defineProperty(obj, key, {
      value: value,
      enumerable: !0,
      configurable: !0,
      writable: !0
    }), obj[key];
  }

  try {
    define({}, "");
  } catch (err) {
    define = function (obj, key, value) {
      return obj[key] = value;
    };
  }

  function wrap(innerFn, outerFn, self, tryLocsList) {
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator,
        generator = Object.create(protoGenerator.prototype),
        context = new Context(tryLocsList || []);
    return generator._invoke = function (innerFn, self, context) {
      var state = "suspendedStart";
      return function (method, arg) {
        if ("executing" === state) throw new Error("Generator is already running");

        if ("completed" === state) {
          if ("throw" === method) throw arg;
          return doneResult();
        }

        for (context.method = method, context.arg = arg;;) {
          var delegate = context.delegate;

          if (delegate) {
            var delegateResult = maybeInvokeDelegate(delegate, context);

            if (delegateResult) {
              if (delegateResult === ContinueSentinel) continue;
              return delegateResult;
            }
          }

          if ("next" === context.method) context.sent = context._sent = context.arg;else if ("throw" === context.method) {
            if ("suspendedStart" === state) throw state = "completed", context.arg;
            context.dispatchException(context.arg);
          } else "return" === context.method && context.abrupt("return", context.arg);
          state = "executing";
          var record = tryCatch(innerFn, self, context);

          if ("normal" === record.type) {
            if (state = context.done ? "completed" : "suspendedYield", record.arg === ContinueSentinel) continue;
            return {
              value: record.arg,
              done: context.done
            };
          }

          "throw" === record.type && (state = "completed", context.method = "throw", context.arg = record.arg);
        }
      };
    }(innerFn, self, context), generator;
  }

  function tryCatch(fn, obj, arg) {
    try {
      return {
        type: "normal",
        arg: fn.call(obj, arg)
      };
    } catch (err) {
      return {
        type: "throw",
        arg: err
      };
    }
  }

  exports.wrap = wrap;
  var ContinueSentinel = {};

  function Generator() {}

  function GeneratorFunction() {}

  function GeneratorFunctionPrototype() {}

  var IteratorPrototype = {};
  define(IteratorPrototype, iteratorSymbol, function () {
    return this;
  });
  var getProto = Object.getPrototypeOf,
      NativeIteratorPrototype = getProto && getProto(getProto(values([])));
  NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol) && (IteratorPrototype = NativeIteratorPrototype);
  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);

  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function (method) {
      define(prototype, method, function (arg) {
        return this._invoke(method, arg);
      });
    });
  }

  function AsyncIterator(generator, PromiseImpl) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);

      if ("throw" !== record.type) {
        var result = record.arg,
            value = result.value;
        return value && "object" == typeof value && hasOwn.call(value, "__await") ? PromiseImpl.resolve(value.__await).then(function (value) {
          invoke("next", value, resolve, reject);
        }, function (err) {
          invoke("throw", err, resolve, reject);
        }) : PromiseImpl.resolve(value).then(function (unwrapped) {
          result.value = unwrapped, resolve(result);
        }, function (error) {
          return invoke("throw", error, resolve, reject);
        });
      }

      reject(record.arg);
    }

    var previousPromise;

    this._invoke = function (method, arg) {
      function callInvokeWithMethodAndArg() {
        return new PromiseImpl(function (resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }

      return previousPromise = previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
    };
  }

  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];

    if (undefined === method) {
      if (context.delegate = null, "throw" === context.method) {
        if (delegate.iterator.return && (context.method = "return", context.arg = undefined, maybeInvokeDelegate(delegate, context), "throw" === context.method)) return ContinueSentinel;
        context.method = "throw", context.arg = new TypeError("The iterator does not provide a 'throw' method");
      }

      return ContinueSentinel;
    }

    var record = tryCatch(method, delegate.iterator, context.arg);
    if ("throw" === record.type) return context.method = "throw", context.arg = record.arg, context.delegate = null, ContinueSentinel;
    var info = record.arg;
    return info ? info.done ? (context[delegate.resultName] = info.value, context.next = delegate.nextLoc, "return" !== context.method && (context.method = "next", context.arg = undefined), context.delegate = null, ContinueSentinel) : info : (context.method = "throw", context.arg = new TypeError("iterator result is not an object"), context.delegate = null, ContinueSentinel);
  }

  function pushTryEntry(locs) {
    var entry = {
      tryLoc: locs[0]
    };
    1 in locs && (entry.catchLoc = locs[1]), 2 in locs && (entry.finallyLoc = locs[2], entry.afterLoc = locs[3]), this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal", delete record.arg, entry.completion = record;
  }

  function Context(tryLocsList) {
    this.tryEntries = [{
      tryLoc: "root"
    }], tryLocsList.forEach(pushTryEntry, this), this.reset(!0);
  }

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];
      if (iteratorMethod) return iteratorMethod.call(iterable);
      if ("function" == typeof iterable.next) return iterable;

      if (!isNaN(iterable.length)) {
        var i = -1,
            next = function next() {
          for (; ++i < iterable.length;) if (hasOwn.call(iterable, i)) return next.value = iterable[i], next.done = !1, next;

          return next.value = undefined, next.done = !0, next;
        };

        return next.next = next;
      }
    }

    return {
      next: doneResult
    };
  }

  function doneResult() {
    return {
      value: undefined,
      done: !0
    };
  }

  return GeneratorFunction.prototype = GeneratorFunctionPrototype, define(Gp, "constructor", GeneratorFunctionPrototype), define(GeneratorFunctionPrototype, "constructor", GeneratorFunction), GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction"), exports.isGeneratorFunction = function (genFun) {
    var ctor = "function" == typeof genFun && genFun.constructor;
    return !!ctor && (ctor === GeneratorFunction || "GeneratorFunction" === (ctor.displayName || ctor.name));
  }, exports.mark = function (genFun) {
    return Object.setPrototypeOf ? Object.setPrototypeOf(genFun, GeneratorFunctionPrototype) : (genFun.__proto__ = GeneratorFunctionPrototype, define(genFun, toStringTagSymbol, "GeneratorFunction")), genFun.prototype = Object.create(Gp), genFun;
  }, exports.awrap = function (arg) {
    return {
      __await: arg
    };
  }, defineIteratorMethods(AsyncIterator.prototype), define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
    return this;
  }), exports.AsyncIterator = AsyncIterator, exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {
    void 0 === PromiseImpl && (PromiseImpl = Promise);
    var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
    return exports.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {
      return result.done ? result.value : iter.next();
    });
  }, defineIteratorMethods(Gp), define(Gp, toStringTagSymbol, "Generator"), define(Gp, iteratorSymbol, function () {
    return this;
  }), define(Gp, "toString", function () {
    return "[object Generator]";
  }), exports.keys = function (object) {
    var keys = [];

    for (var key in object) keys.push(key);

    return keys.reverse(), function next() {
      for (; keys.length;) {
        var key = keys.pop();
        if (key in object) return next.value = key, next.done = !1, next;
      }

      return next.done = !0, next;
    };
  }, exports.values = values, Context.prototype = {
    constructor: Context,
    reset: function (skipTempReset) {
      if (this.prev = 0, this.next = 0, this.sent = this._sent = undefined, this.done = !1, this.delegate = null, this.method = "next", this.arg = undefined, this.tryEntries.forEach(resetTryEntry), !skipTempReset) for (var name in this) "t" === name.charAt(0) && hasOwn.call(this, name) && !isNaN(+name.slice(1)) && (this[name] = undefined);
    },
    stop: function () {
      this.done = !0;
      var rootRecord = this.tryEntries[0].completion;
      if ("throw" === rootRecord.type) throw rootRecord.arg;
      return this.rval;
    },
    dispatchException: function (exception) {
      if (this.done) throw exception;
      var context = this;

      function handle(loc, caught) {
        return record.type = "throw", record.arg = exception, context.next = loc, caught && (context.method = "next", context.arg = undefined), !!caught;
      }

      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i],
            record = entry.completion;
        if ("root" === entry.tryLoc) return handle("end");

        if (entry.tryLoc <= this.prev) {
          var hasCatch = hasOwn.call(entry, "catchLoc"),
              hasFinally = hasOwn.call(entry, "finallyLoc");

          if (hasCatch && hasFinally) {
            if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);
            if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
          } else if (hasCatch) {
            if (this.prev < entry.catchLoc) return handle(entry.catchLoc, !0);
          } else {
            if (!hasFinally) throw new Error("try statement without catch or finally");
            if (this.prev < entry.finallyLoc) return handle(entry.finallyLoc);
          }
        }
      }
    },
    abrupt: function (type, arg) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];

        if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
          var finallyEntry = entry;
          break;
        }
      }

      finallyEntry && ("break" === type || "continue" === type) && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc && (finallyEntry = null);
      var record = finallyEntry ? finallyEntry.completion : {};
      return record.type = type, record.arg = arg, finallyEntry ? (this.method = "next", this.next = finallyEntry.finallyLoc, ContinueSentinel) : this.complete(record);
    },
    complete: function (record, afterLoc) {
      if ("throw" === record.type) throw record.arg;
      return "break" === record.type || "continue" === record.type ? this.next = record.arg : "return" === record.type ? (this.rval = this.arg = record.arg, this.method = "return", this.next = "end") : "normal" === record.type && afterLoc && (this.next = afterLoc), ContinueSentinel;
    },
    finish: function (finallyLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];
        if (entry.finallyLoc === finallyLoc) return this.complete(entry.completion, entry.afterLoc), resetTryEntry(entry), ContinueSentinel;
      }
    },
    catch: function (tryLoc) {
      for (var i = this.tryEntries.length - 1; i >= 0; --i) {
        var entry = this.tryEntries[i];

        if (entry.tryLoc === tryLoc) {
          var record = entry.completion;

          if ("throw" === record.type) {
            var thrown = record.arg;
            resetTryEntry(entry);
          }

          return thrown;
        }
      }

      throw new Error("illegal catch attempt");
    },
    delegateYield: function (iterable, resultName, nextLoc) {
      return this.delegate = {
        iterator: values(iterable),
        resultName: resultName,
        nextLoc: nextLoc
      }, "next" === this.method && (this.arg = undefined), ContinueSentinel;
    }
  }, exports;
}

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);
    });
  };
}

function _extends() {
  _extends = Object.assign ? Object.assign.bind() : function (target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i];

      for (var key in source) {
        if (Object.prototype.hasOwnProperty.call(source, key)) {
          target[key] = source[key];
        }
      }
    }

    return target;
  };
  return _extends.apply(this, arguments);
}

function _unsupportedIterableToArray(o, minLen) {
  if (!o) return;
  if (typeof o === "string") return _arrayLikeToArray(o, minLen);
  var n = Object.prototype.toString.call(o).slice(8, -1);
  if (n === "Object" && o.constructor) n = o.constructor.name;
  if (n === "Map" || n === "Set") return Array.from(o);
  if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
}

function _arrayLikeToArray(arr, len) {
  if (len == null || len > arr.length) len = arr.length;

  for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];

  return arr2;
}

function _createForOfIteratorHelperLoose(o, allowArrayLike) {
  var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
  if (it) return (it = it.call(o)).next.bind(it);

  if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
    if (it) o = it;
    var i = 0;
    return function () {
      if (i >= o.length) return {
        done: true
      };
      return {
        done: false,
        value: o[i++]
      };
    };
  }

  throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
}

var WRITE_ATOM = 'w';
var RESTORE_ATOMS = 'h';

function useResetAtom(anAtom, scope) {
  var ScopeContext = jotai.SECRET_INTERNAL_getScopeContext(scope);
  var store = react.useContext(ScopeContext).s;
  var setAtom = react.useCallback(function () {
    return store[WRITE_ATOM](anAtom, RESET);
  }, [store, anAtom]);
  return setAtom;
}

function useReducerAtom(anAtom, reducer, scope) {
  var _useAtom = jotai.useAtom(anAtom, scope),
      state = _useAtom[0],
      setState = _useAtom[1];

  var dispatch = react.useCallback(function (action) {
    setState(function (prev) {
      return reducer(prev, action);
    });
  }, [setState, reducer]);
  return [state, dispatch];
}

function atomWithReducer(initialValue, reducer) {
  var anAtom = jotai.atom(initialValue, function (get, set, action) {
    return set(anAtom, reducer(get(anAtom), action));
  });
  return anAtom;
}

function atomFamily(initializeAtom, areEqual) {
  var shouldRemove = null;
  var atoms = new Map();

  var createAtom = function createAtom(param) {
    var item;

    if (areEqual === undefined) {
      item = atoms.get(param);
    } else {
      for (var _iterator = _createForOfIteratorHelperLoose(atoms), _step; !(_step = _iterator()).done;) {
        var _step$value = _step.value,
            key = _step$value[0],
            value = _step$value[1];

        if (areEqual(key, param)) {
          item = value;
          break;
        }
      }
    }

    if (item !== undefined) {
      if (shouldRemove != null && shouldRemove(item[1], param)) {
        atoms.delete(param);
      } else {
        return item[0];
      }
    }

    var newAtom = initializeAtom(param);
    atoms.set(param, [newAtom, Date.now()]);
    return newAtom;
  };

  createAtom.remove = function (param) {
    if (areEqual === undefined) {
      atoms.delete(param);
    } else {
      for (var _iterator2 = _createForOfIteratorHelperLoose(atoms), _step2; !(_step2 = _iterator2()).done;) {
        var _step2$value = _step2.value,
            key = _step2$value[0];

        if (areEqual(key, param)) {
          atoms.delete(key);
          break;
        }
      }
    }
  };

  createAtom.setShouldRemove = function (fn) {
    shouldRemove = fn;
    if (!shouldRemove) return;

    for (var _iterator3 = _createForOfIteratorHelperLoose(atoms), _step3; !(_step3 = _iterator3()).done;) {
      var _step3$value = _step3.value,
          key = _step3$value[0],
          value = _step3$value[1];

      if (shouldRemove(value[1], key)) {
        atoms.delete(key);
      }
    }
  };

  return createAtom;
}

var getWeakCacheItem = function getWeakCacheItem(cache, deps) {
  do {
    var _deps = deps,
        dep = _deps[0],
        rest = _deps.slice(1);

    var entry = cache.get(dep);

    if (!entry) {
      return;
    }

    if (!rest.length) {
      return entry[1];
    }

    cache = entry[0];
    deps = rest;
  } while (deps.length);
};

var setWeakCacheItem = function setWeakCacheItem(cache, deps, item) {
  do {
    var _deps2 = deps,
        dep = _deps2[0],
        rest = _deps2.slice(1);

    var entry = cache.get(dep);

    if (!entry) {
      entry = [new WeakMap()];
      cache.set(dep, entry);
    }

    if (!rest.length) {
      entry[1] = item;
      return;
    }

    cache = entry[0];
    deps = rest;
  } while (deps.length);
};

var createMemoizeAtom = function createMemoizeAtom() {
  var cache = new WeakMap();

  var memoizeAtom = function memoizeAtom(createAtom, deps) {
    var cachedAtom = getWeakCacheItem(cache, deps);

    if (cachedAtom) {
      return cachedAtom;
    }

    var createdAtom = createAtom();
    setWeakCacheItem(cache, deps, createdAtom);
    return createdAtom;
  };

  return memoizeAtom;
};

var memoizeAtom$4 = createMemoizeAtom();
function selectAtom(anAtom, selector, equalityFn) {
  if (equalityFn === void 0) {
    equalityFn = Object.is;
  }

  return memoizeAtom$4(function () {
    var refAtom = jotai.atom(function () {
      return {};
    });
    var derivedAtom = jotai.atom(function (get) {
      var slice = selector(get(anAtom));
      var ref = get(refAtom);

      if ('prev' in ref && equalityFn(ref.prev, slice)) {
        return ref.prev;
      }

      ref.prev = slice;
      return slice;
    });
    return derivedAtom;
  }, [anAtom, selector, equalityFn]);
}

function useAtomCallback(callback, scope) {
  var anAtom = react.useMemo(function () {
    return jotai.atom(null, function (get, set, _ref) {
      var arg = _ref[0],
          resolve = _ref[1],
          reject = _ref[2];

      try {
        resolve(callback(get, set, arg));
      } catch (e) {
        reject(e);
      }
    });
  }, [callback]);
  var invoke = jotai.useSetAtom(anAtom, scope);
  return react.useCallback(function (arg) {
    var isSync = true;
    var settled = {};
    var promise = new Promise(function (resolve, reject) {
      invoke([arg, function (v) {
        if (isSync) {
          settled = {
            v: v
          };
        } else {
          resolve(v);
        }
      }, function (e) {
        if (isSync) {
          settled = {
            e: e
          };
        } else {
          reject(e);
        }
      }]);
    });
    isSync = false;

    if ('e' in settled) {
      throw settled.e;
    }

    if ('v' in settled) {
      return settled.v;
    }

    return promise;
  }, [invoke]);
}

var memoizeAtom$3 = createMemoizeAtom();

var deepFreeze = function deepFreeze(obj) {
  if (typeof obj !== 'object' || obj === null) return;
  Object.freeze(obj);
  var propNames = Object.getOwnPropertyNames(obj);

  for (var _iterator = _createForOfIteratorHelperLoose(propNames), _step; !(_step = _iterator()).done;) {
    var name = _step.value;
    var value = obj[name];
    deepFreeze(value);
  }

  return obj;
};

function freezeAtom(anAtom) {
  return memoizeAtom$3(function () {
    var frozenAtom = jotai.atom(function (get) {
      return deepFreeze(get(anAtom));
    }, function (_get, set, arg) {
      return set(anAtom, arg);
    });
    return frozenAtom;
  }, [anAtom]);
}
function freezeAtomCreator(createAtom) {
  return function () {
    var anAtom = createAtom.apply(void 0, arguments);
    var origRead = anAtom.read;

    anAtom.read = function (get) {
      return deepFreeze(origRead(get));
    };

    return anAtom;
  };
}

var memoizeAtom$2 = createMemoizeAtom();

var isWritable = function isWritable(atom) {
  return !!atom.write;
};

var isFunction = function isFunction(x) {
  return typeof x === 'function';
};

function splitAtom(arrAtom, keyExtractor) {
  return memoizeAtom$2(function () {
    var mappingCache = new WeakMap();

    var getMapping = function getMapping(arr, prev) {
      var mapping = mappingCache.get(arr);

      if (mapping) {
        return mapping;
      }

      var prevMapping = prev && mappingCache.get(prev);
      var atomList = [];
      var keyList = [];
      arr.forEach(function (item, index) {
        var key = keyExtractor ? keyExtractor(item) : index;
        keyList[index] = key;
        var cachedAtom = prevMapping && prevMapping.atomList[prevMapping.keyList.indexOf(key)];

        if (cachedAtom) {
          atomList[index] = cachedAtom;
          return;
        }

        var read = function read(get) {
          var ref = get(refAtom);
          var currArr = get(arrAtom);
          var mapping = getMapping(currArr, ref.prev);
          var index = mapping.keyList.indexOf(key);

          if (index < 0 || index >= currArr.length) {
            var prevItem = arr[getMapping(arr).keyList.indexOf(key)];

            if (prevItem) {
              return prevItem;
            }

            throw new Error('splitAtom: index out of bounds for read');
          }

          return currArr[index];
        };

        var write = function write(get, set, update) {
          var ref = get(refAtom);
          var arr = get(arrAtom);
          var mapping = getMapping(arr, ref.prev);
          var index = mapping.keyList.indexOf(key);

          if (index < 0 || index >= arr.length) {
            throw new Error('splitAtom: index out of bounds for write');
          }

          var nextItem = isFunction(update) ? update(arr[index]) : update;
          set(arrAtom, [].concat(arr.slice(0, index), [nextItem], arr.slice(index + 1)));
        };

        atomList[index] = isWritable(arrAtom) ? jotai.atom(read, write) : jotai.atom(read);
      });

      if (prevMapping && prevMapping.keyList.length === keyList.length && prevMapping.keyList.every(function (x, i) {
        return x === keyList[i];
      })) {
        mapping = prevMapping;
      } else {
        mapping = {
          atomList: atomList,
          keyList: keyList
        };
      }

      mappingCache.set(arr, mapping);
      return mapping;
    };

    var refAtom = jotai.atom(function () {
      return {};
    });

    var read = function read(get) {
      var ref = get(refAtom);
      var arr = get(arrAtom);
      var mapping = getMapping(arr, ref.prev);
      ref.prev = arr;
      return mapping.atomList;
    };

    var write = function write(get, set, action) {
      if ('read' in action) {
        console.warn('atomToRemove is deprecated. use action with type');
        action = {
          type: 'remove',
          atom: action
        };
      }

      switch (action.type) {
        case 'remove':
          {
            var index = get(splittedAtom).indexOf(action.atom);

            if (index >= 0) {
              var arr = get(arrAtom);
              set(arrAtom, [].concat(arr.slice(0, index), arr.slice(index + 1)));
            }

            break;
          }

        case 'insert':
          {
            var _index = action.before ? get(splittedAtom).indexOf(action.before) : get(splittedAtom).length;

            if (_index >= 0) {
              var _arr = get(arrAtom);

              set(arrAtom, [].concat(_arr.slice(0, _index), [action.value], _arr.slice(_index)));
            }

            break;
          }

        case 'move':
          {
            var index1 = get(splittedAtom).indexOf(action.atom);
            var index2 = action.before ? get(splittedAtom).indexOf(action.before) : get(splittedAtom).length;

            if (index1 >= 0 && index2 >= 0) {
              var _arr2 = get(arrAtom);

              if (index1 < index2) {
                set(arrAtom, [].concat(_arr2.slice(0, index1), _arr2.slice(index1 + 1, index2), [_arr2[index1]], _arr2.slice(index2)));
              } else {
                set(arrAtom, [].concat(_arr2.slice(0, index2), [_arr2[index1]], _arr2.slice(index2, index1), _arr2.slice(index1 + 1)));
              }
            }

            break;
          }
      }
    };

    var splittedAtom = isWritable(arrAtom) ? jotai.atom(read, write) : jotai.atom(read);
    return splittedAtom;
  }, keyExtractor ? [arrAtom, keyExtractor] : [arrAtom]);
}

function atomWithDefault(getDefault) {
  var EMPTY = Symbol();
  var overwrittenAtom = jotai.atom(EMPTY);
  var anAtom = jotai.atom(function (get) {
    var overwritten = get(overwrittenAtom);

    if (overwritten !== EMPTY) {
      return overwritten;
    }

    return getDefault(get);
  }, function (get, set, update) {
    if (update === RESET) {
      return set(overwrittenAtom, EMPTY);
    }

    return set(overwrittenAtom, typeof update === 'function' ? update(get(anAtom)) : update);
  });
  return anAtom;
}

var memoizeAtom$1 = createMemoizeAtom();
var emptyArrayAtom = jotai.atom(function () {
  return [];
});
function waitForAll(atoms) {
  var createAtom = function createAtom() {
    var unwrappedAtoms = unwrapAtoms(atoms);
    var derivedAtom = jotai.atom(function (get) {
      var promises = [];
      var values = unwrappedAtoms.map(function (anAtom, index) {
        try {
          return get(anAtom);
        } catch (e) {
          if (e instanceof Promise) {
            promises[index] = e;
          } else {
            throw e;
          }
        }
      });

      if (promises.length) {
        throw Promise.all(promises);
      }

      return wrapResults(atoms, values);
    });
    return derivedAtom;
  };

  if (Array.isArray(atoms)) {
    if (atoms.length) {
      return memoizeAtom$1(createAtom, atoms);
    }

    return emptyArrayAtom;
  }

  return createAtom();
}

var unwrapAtoms = function unwrapAtoms(atoms) {
  return Array.isArray(atoms) ? atoms : Object.getOwnPropertyNames(atoms).map(function (key) {
    return atoms[key];
  });
};

var wrapResults = function wrapResults(atoms, results) {
  return Array.isArray(atoms) ? results : Object.getOwnPropertyNames(atoms).reduce(function (out, key, idx) {
    var _extends2;

    return _extends({}, out, (_extends2 = {}, _extends2[key] = results[idx], _extends2));
  }, {});
};

function createJSONStorage(getStringStorage) {
  var lastStr;
  var lastValue;
  return {
    getItem: function getItem(key) {
      var parse = function parse(str) {
        str = str || '';

        if (lastStr !== str) {
          lastValue = JSON.parse(str);
          lastStr = str;
        }

        return lastValue;
      };

      var str = getStringStorage().getItem(key);

      if (str instanceof Promise) {
        return str.then(parse);
      }

      return parse(str);
    },
    setItem: function setItem(key, newValue) {
      return getStringStorage().setItem(key, JSON.stringify(newValue));
    },
    removeItem: function removeItem(key) {
      return getStringStorage().removeItem(key);
    }
  };
}
var defaultStorage = createJSONStorage(function () {
  return localStorage;
});

defaultStorage.subscribe = function (key, callback) {
  var storageEventCallback = function storageEventCallback(e) {
    if (e.key === key && e.newValue) {
      callback(JSON.parse(e.newValue));
    }
  };

  window.addEventListener('storage', storageEventCallback);
  return function () {
    window.removeEventListener('storage', storageEventCallback);
  };
};

function atomWithStorage(key, initialValue, storage) {
  if (storage === void 0) {
    storage = defaultStorage;
  }

  var getInitialValue = function getInitialValue() {
    try {
      var _value = storage.getItem(key);

      if (_value instanceof Promise) {
        return _value.catch(function () {
          return initialValue;
        });
      }

      return _value;
    } catch (_unused) {
      return initialValue;
    }
  };

  var baseAtom = jotai.atom(storage.delayInit ? initialValue : getInitialValue());

  baseAtom.onMount = function (setAtom) {
    var unsub;

    if (storage.subscribe) {
      unsub = storage.subscribe(key, setAtom);
      setAtom(getInitialValue());
    }

    if (storage.delayInit) {
      var _value2 = getInitialValue();

      if (_value2 instanceof Promise) {
        _value2.then(setAtom);
      } else {
        setAtom(_value2);
      }
    }

    return unsub;
  };

  var anAtom = jotai.atom(function (get) {
    return get(baseAtom);
  }, function (get, set, update) {
    if (update === RESET) {
      set(baseAtom, initialValue);
      return storage.removeItem(key);
    }

    var newValue = typeof update === 'function' ? update(get(baseAtom)) : update;
    set(baseAtom, newValue);
    return storage.setItem(key, newValue);
  });
  return anAtom;
}
function atomWithHash(key, initialValue, options) {
  var serialize = (options == null ? void 0 : options.serialize) || JSON.stringify;
  var deserialize = (options == null ? void 0 : options.deserialize) || JSON.parse;

  var _subscribe = (options == null ? void 0 : options.subscribe) || function (callback) {
    window.addEventListener('hashchange', callback);
    return function () {
      window.removeEventListener('hashchange', callback);
    };
  };

  var hashStorage = _extends({
    getItem: function getItem(key) {
      var searchParams = new URLSearchParams(location.hash.slice(1));
      var storedValue = searchParams.get(key);

      if (storedValue === null) {
        throw new Error('no value stored');
      }

      return deserialize(storedValue);
    },
    setItem: function setItem(key, newValue) {
      var searchParams = new URLSearchParams(location.hash.slice(1));
      searchParams.set(key, serialize(newValue));

      if (options != null && options.replaceState) {
        history.replaceState(null, '', '#' + searchParams.toString());
      } else {
        location.hash = searchParams.toString();
      }
    },
    removeItem: function removeItem(key) {
      var searchParams = new URLSearchParams(location.hash.slice(1));
      searchParams.delete(key);

      if (options != null && options.replaceState) {
        history.replaceState(null, '', '#' + searchParams.toString());
      } else {
        location.hash = searchParams.toString();
      }
    }
  }, (options == null ? void 0 : options.delayInit) && {
    delayInit: true
  }, {
    subscribe: function subscribe(key, setValue) {
      var callback = function callback() {
        var searchParams = new URLSearchParams(location.hash.slice(1));
        var str = searchParams.get(key);

        if (str !== null) {
          setValue(deserialize(str));
        } else {
          setValue(initialValue);
        }
      };

      return _subscribe(callback);
    }
  });

  return atomWithStorage(key, initialValue, hashStorage);
}

function atomWithObservable(createObservable, options) {
  var observableResultAtom = jotai.atom(function (get) {
    var _observable$Symbol$ob, _observable;

    var observable = createObservable(get);
    var itself = (_observable$Symbol$ob = (_observable = observable)[Symbol.observable]) == null ? void 0 : _observable$Symbol$ob.call(_observable);

    if (itself) {
      observable = itself;
    }

    var EMPTY = Symbol();
    var resolveEmittedInitialValue = null;
    var initialEmittedValue = (options == null ? void 0 : options.initialValue) === undefined ? new Promise(function (resolve) {
      resolveEmittedInitialValue = resolve;
    }) : undefined;
    var initialValueWasEmitted = false;
    var emittedValueBeforeMount = EMPTY;
    var isSync = true;

    var setData = function setData(data) {
      if ((options == null ? void 0 : options.initialValue) === undefined && !initialValueWasEmitted) {
        if (isSync) {
          initialEmittedValue = data;
        }

        resolveEmittedInitialValue == null ? void 0 : resolveEmittedInitialValue(data);
        initialValueWasEmitted = true;
        resolveEmittedInitialValue = null;
      } else {
        emittedValueBeforeMount = data;
      }
    };

    var dataListener = function dataListener(data) {
      setData(data);
    };

    var errorListener = function errorListener(error) {
      setData(Promise.reject(error));
    };

    var subscription = null;
    var initialValue;

    if ((options == null ? void 0 : options.initialValue) !== undefined) {
      initialValue = getInitialValue(options);
    } else {
      subscription = observable.subscribe(dataListener, errorListener);
      initialValue = initialEmittedValue;
    }

    isSync = false;
    var dataAtom = jotai.atom(initialValue);

    dataAtom.onMount = function (update) {
      setData = update;

      if (emittedValueBeforeMount !== EMPTY) {
        update(emittedValueBeforeMount);
      }

      if (!subscription) {
        subscription = observable.subscribe(dataListener, errorListener);
      }

      return function () {
        var _subscription;

        (_subscription = subscription) == null ? void 0 : _subscription.unsubscribe();
        subscription = null;
      };
    };

    return {
      dataAtom: dataAtom,
      observable: observable
    };
  });
  var observableAtom = jotai.atom(function (get) {
    var _get = get(observableResultAtom),
        dataAtom = _get.dataAtom;

    return get(dataAtom);
  }, function (get, set, data) {
    var _get2 = get(observableResultAtom),
        dataAtom = _get2.dataAtom,
        observable = _get2.observable;

    if ('next' in observable) {
      var subscription = null;

      var callback = function callback(data) {
        var _subscription2;

        set(dataAtom, data);
        (_subscription2 = subscription) == null ? void 0 : _subscription2.unsubscribe();
      };

      subscription = observable.subscribe(callback);
      observable.next(data);
    } else {
      throw new Error('observable is not subject');
    }
  });
  return observableAtom;
}

function getInitialValue(options) {
  var initialValue = options.initialValue;
  return initialValue instanceof Function ? initialValue() : initialValue;
}

var hydratedMap = new WeakMap();
function useHydrateAtoms(values, scope) {
  var ScopeContext = jotai.SECRET_INTERNAL_getScopeContext(scope);
  var scopeContainer = react.useContext(ScopeContext);
  var store = scopeContainer.s;
  var hydratedSet = getHydratedSet(scopeContainer);
  var tuplesToRestore = [];

  for (var _iterator = _createForOfIteratorHelperLoose(values), _step; !(_step = _iterator()).done;) {
    var tuple = _step.value;
    var atom = tuple[0];

    if (!hydratedSet.has(atom)) {
      hydratedSet.add(atom);
      tuplesToRestore.push(tuple);
    }
  }

  if (tuplesToRestore.length) {
    store[RESTORE_ATOMS](tuplesToRestore);
  }
}

function getHydratedSet(scopeContainer) {
  var hydratedSet = hydratedMap.get(scopeContainer);

  if (!hydratedSet) {
    hydratedSet = new WeakSet();
    hydratedMap.set(scopeContainer, hydratedSet);
  }

  return hydratedSet;
}

var memoizeAtom = createMemoizeAtom();
var LOADING = {
  state: 'loading'
};
function loadable(anAtom) {
  return memoizeAtom(function () {
    var loadableAtomCache = new WeakMap();
    var catchAtom = jotai.atom(function (get) {
      var promise;

      try {
        var data = get(anAtom);

        var _loadableAtom = jotai.atom({
          state: 'hasData',
          data: data
        });

        return _loadableAtom;
      } catch (error) {
        if (error instanceof Promise) {
          promise = error;
        } else {
          var _loadableAtom2 = jotai.atom({
            state: 'hasError',
            error: error
          });

          return _loadableAtom2;
        }
      }

      var cached = loadableAtomCache.get(promise);

      if (cached) {
        return cached;
      }

      var loadableAtom = jotai.atom(LOADING, function () {
        var _ref = _asyncToGenerator(_regeneratorRuntime().mark(function _callee(get, set) {
          var _data;

          return _regeneratorRuntime().wrap(function _callee$(_context) {
            while (1) {
              switch (_context.prev = _context.next) {
                case 0:
                  _context.prev = 0;
                  _context.next = 3;
                  return get(anAtom, {
                    unstable_promise: true
                  });

                case 3:
                  _data = _context.sent;
                  set(loadableAtom, {
                    state: 'hasData',
                    data: _data
                  });
                  _context.next = 10;
                  break;

                case 7:
                  _context.prev = 7;
                  _context.t0 = _context["catch"](0);
                  set(loadableAtom, {
                    state: 'hasError',
                    error: _context.t0
                  });

                case 10:
                case "end":
                  return _context.stop();
              }
            }
          }, _callee, null, [[0, 7]]);
        }));

        return function (_x, _x2) {
          return _ref.apply(this, arguments);
        };
      }());

      loadableAtom.onMount = function (init) {
        init();
      };

      loadableAtomCache.set(promise, loadableAtom);
      return loadableAtom;
    });
    var derivedAtom = jotai.atom(function (get) {
      var loadableAtom = get(catchAtom);
      return get(loadableAtom);
    });
    return derivedAtom;
  }, [anAtom]);
}

Object.defineProperty(exports, 'useAtomValue', {
  enumerable: true,
  get: function () { return jotai.useAtomValue; }
});
Object.defineProperty(exports, 'useUpdateAtom', {
  enumerable: true,
  get: function () { return jotai.useSetAtom; }
});
exports.RESET = RESET;
exports.atomFamily = atomFamily;
exports.atomWithDefault = atomWithDefault;
exports.atomWithHash = atomWithHash;
exports.atomWithObservable = atomWithObservable;
exports.atomWithReducer = atomWithReducer;
exports.atomWithReset = atomWithReset;
exports.atomWithStorage = atomWithStorage;
exports.createJSONStorage = createJSONStorage;
exports.freezeAtom = freezeAtom;
exports.freezeAtomCreator = freezeAtomCreator;
exports.loadable = loadable;
exports.selectAtom = selectAtom;
exports.splitAtom = splitAtom;
exports.useAtomCallback = useAtomCallback;
exports.useHydrateAtoms = useHydrateAtoms;
exports.useReducerAtom = useReducerAtom;
exports.useResetAtom = useResetAtom;
exports.waitForAll = waitForAll;