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Viewing file:     queryObserver.js (16.89 KB)      -rw-r--r--

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

exports.__esModule = true;
exports.QueryObserver = void 0;

var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));

var _inheritsLoose2 = _interopRequireDefault(require("@babel/runtime/helpers/inheritsLoose"));

var _utils = require("./utils");

var _notifyManager = require("./notifyManager");

var _focusManager = require("./focusManager");

var _subscribable = require("./subscribable");

var _logger = require("./logger");

var QueryObserver = /*#__PURE__*/function (_Subscribable) {
  (0, _inheritsLoose2.default)(QueryObserver, _Subscribable);

  function QueryObserver(client, options) {
    var _this;

    _this = _Subscribable.call(this) || this;
    _this.client = client;
    _this.options = options;
    _this.trackedProps = [];
    _this.previousSelectError = null;

    _this.bindMethods();

    _this.setOptions(options);

    return _this;
  }

  var _proto = QueryObserver.prototype;

  _proto.bindMethods = function bindMethods() {
    this.remove = this.remove.bind(this);
    this.refetch = this.refetch.bind(this);
  };

  _proto.onSubscribe = function onSubscribe() {
    if (this.listeners.length === 1) {
      this.currentQuery.addObserver(this);

      if (shouldFetchOnMount(this.currentQuery, this.options)) {
        this.executeFetch();
      }

      this.updateTimers();
    }
  };

  _proto.onUnsubscribe = function onUnsubscribe() {
    if (!this.listeners.length) {
      this.destroy();
    }
  };

  _proto.shouldFetchOnReconnect = function shouldFetchOnReconnect() {
    return _shouldFetchOnReconnect(this.currentQuery, this.options);
  };

  _proto.shouldFetchOnWindowFocus = function shouldFetchOnWindowFocus() {
    return _shouldFetchOnWindowFocus(this.currentQuery, this.options);
  };

  _proto.destroy = function destroy() {
    this.listeners = [];
    this.clearTimers();
    this.currentQuery.removeObserver(this);
  };

  _proto.setOptions = function setOptions(options, notifyOptions) {
    var prevOptions = this.options;
    var prevQuery = this.currentQuery;
    this.options = this.client.defaultQueryObserverOptions(options);

    if (typeof this.options.enabled !== 'undefined' && typeof this.options.enabled !== 'boolean') {
      throw new Error('Expected enabled to be a boolean');
    } // Keep previous query key if the user does not supply one


    if (!this.options.queryKey) {
      this.options.queryKey = prevOptions.queryKey;
    }

    this.updateQuery();
    var mounted = this.hasListeners(); // Fetch if there are subscribers

    if (mounted && shouldFetchOptionally(this.currentQuery, prevQuery, this.options, prevOptions)) {
      this.executeFetch();
    } // Update result


    this.updateResult(notifyOptions); // Update stale interval if needed

    if (mounted && (this.currentQuery !== prevQuery || this.options.enabled !== prevOptions.enabled || this.options.staleTime !== prevOptions.staleTime)) {
      this.updateStaleTimeout();
    } // Update refetch interval if needed


    if (mounted && (this.currentQuery !== prevQuery || this.options.enabled !== prevOptions.enabled || this.options.refetchInterval !== prevOptions.refetchInterval)) {
      this.updateRefetchInterval();
    }
  };

  _proto.getOptimisticResult = function getOptimisticResult(options) {
    var defaultedOptions = this.client.defaultQueryObserverOptions(options);
    var query = this.client.getQueryCache().build(this.client, defaultedOptions);
    return this.createResult(query, defaultedOptions);
  };

  _proto.getCurrentResult = function getCurrentResult() {
    return this.currentResult;
  };

  _proto.trackResult = function trackResult(result) {
    var _this2 = this;

    var trackedResult = {};
    Object.keys(result).forEach(function (key) {
      Object.defineProperty(trackedResult, key, {
        configurable: false,
        enumerable: true,
        get: function get() {
          var typedKey = key;

          if (!_this2.trackedProps.includes(typedKey)) {
            _this2.trackedProps.push(typedKey);
          }

          return result[typedKey];
        }
      });
    });
    return trackedResult;
  };

  _proto.getNextResult = function getNextResult(options) {
    var _this3 = this;

    return new Promise(function (resolve, reject) {
      var unsubscribe = _this3.subscribe(function (result) {
        if (!result.isFetching) {
          unsubscribe();

          if (result.isError && (options == null ? void 0 : options.throwOnError)) {
            reject(result.error);
          } else {
            resolve(result);
          }
        }
      });
    });
  };

  _proto.getCurrentQuery = function getCurrentQuery() {
    return this.currentQuery;
  };

  _proto.remove = function remove() {
    this.client.getQueryCache().remove(this.currentQuery);
  };

  _proto.refetch = function refetch(options) {
    return this.fetch(options);
  };

  _proto.fetchOptimistic = function fetchOptimistic(options) {
    var _this4 = this;

    var defaultedOptions = this.client.defaultQueryObserverOptions(options);
    var query = this.client.getQueryCache().build(this.client, defaultedOptions);
    return query.fetch().then(function () {
      return _this4.createResult(query, defaultedOptions);
    });
  };

  _proto.fetch = function fetch(fetchOptions) {
    var _this5 = this;

    return this.executeFetch(fetchOptions).then(function () {
      _this5.updateResult();

      return _this5.currentResult;
    });
  };

  _proto.executeFetch = function executeFetch(fetchOptions) {
    // Make sure we reference the latest query as the current one might have been removed
    this.updateQuery(); // Fetch

    var promise = this.currentQuery.fetch(this.options, fetchOptions);

    if (!(fetchOptions == null ? void 0 : fetchOptions.throwOnError)) {
      promise = promise.catch(_utils.noop);
    }

    return promise;
  };

  _proto.updateStaleTimeout = function updateStaleTimeout() {
    var _this6 = this;

    this.clearStaleTimeout();

    if (_utils.isServer || this.currentResult.isStale || !(0, _utils.isValidTimeout)(this.options.staleTime)) {
      return;
    }

    var time = (0, _utils.timeUntilStale)(this.currentResult.dataUpdatedAt, this.options.staleTime); // The timeout is sometimes triggered 1 ms before the stale time expiration.
    // To mitigate this issue we always add 1 ms to the timeout.

    var timeout = time + 1;
    this.staleTimeoutId = setTimeout(function () {
      if (!_this6.currentResult.isStale) {
        _this6.updateResult();
      }
    }, timeout);
  };

  _proto.updateRefetchInterval = function updateRefetchInterval() {
    var _this7 = this;

    this.clearRefetchInterval();

    if (_utils.isServer || this.options.enabled === false || !(0, _utils.isValidTimeout)(this.options.refetchInterval)) {
      return;
    }

    this.refetchIntervalId = setInterval(function () {
      if (_this7.options.refetchIntervalInBackground || _focusManager.focusManager.isFocused()) {
        _this7.executeFetch();
      }
    }, this.options.refetchInterval);
  };

  _proto.updateTimers = function updateTimers() {
    this.updateStaleTimeout();
    this.updateRefetchInterval();
  };

  _proto.clearTimers = function clearTimers() {
    this.clearStaleTimeout();
    this.clearRefetchInterval();
  };

  _proto.clearStaleTimeout = function clearStaleTimeout() {
    clearTimeout(this.staleTimeoutId);
    this.staleTimeoutId = undefined;
  };

  _proto.clearRefetchInterval = function clearRefetchInterval() {
    clearInterval(this.refetchIntervalId);
    this.refetchIntervalId = undefined;
  };

  _proto.createResult = function createResult(query, options) {
    var prevQuery = this.currentQuery;
    var prevOptions = this.options;
    var prevResult = this.currentResult;
    var prevResultState = this.currentResultState;
    var prevResultOptions = this.currentResultOptions;
    var queryChange = query !== prevQuery;
    var queryInitialState = queryChange ? query.state : this.currentQueryInitialState;
    var prevQueryResult = queryChange ? this.currentResult : this.previousQueryResult;
    var state = query.state;
    var dataUpdatedAt = state.dataUpdatedAt,
        error = state.error,
        errorUpdatedAt = state.errorUpdatedAt,
        isFetching = state.isFetching,
        status = state.status;
    var isPreviousData = false;
    var isPlaceholderData = false;
    var data; // Optimistically set result in fetching state if needed

    if (options.optimisticResults) {
      var mounted = this.hasListeners();
      var fetchOnMount = !mounted && shouldFetchOnMount(query, options);
      var fetchOptionally = mounted && shouldFetchOptionally(query, prevQuery, options, prevOptions);

      if (fetchOnMount || fetchOptionally) {
        isFetching = true;

        if (!dataUpdatedAt) {
          status = 'loading';
        }
      }
    } // Keep previous data if needed


    if (options.keepPreviousData && !state.dataUpdateCount && (prevQueryResult == null ? void 0 : prevQueryResult.isSuccess) && status !== 'error') {
      data = prevQueryResult.data;
      dataUpdatedAt = prevQueryResult.dataUpdatedAt;
      status = prevQueryResult.status;
      isPreviousData = true;
    } // Select data if needed
    else if (options.select && typeof state.data !== 'undefined') {
        // Memoize select result
        if (prevResult && state.data === (prevResultState == null ? void 0 : prevResultState.data) && options.select === (prevResultOptions == null ? void 0 : prevResultOptions.select) && !this.previousSelectError) {
          data = prevResult.data;
        } else {
          try {
            data = options.select(state.data);

            if (options.structuralSharing !== false) {
              data = (0, _utils.replaceEqualDeep)(prevResult == null ? void 0 : prevResult.data, data);
            }

            this.previousSelectError = null;
          } catch (selectError) {
            (0, _logger.getLogger)().error(selectError);
            error = selectError;
            this.previousSelectError = selectError;
            errorUpdatedAt = Date.now();
            status = 'error';
          }
        }
      } // Use query data
      else {
          data = state.data;
        } // Show placeholder data if needed


    if (typeof options.placeholderData !== 'undefined' && typeof data === 'undefined' && status === 'loading') {
      var placeholderData; // Memoize placeholder data

      if ((prevResult == null ? void 0 : prevResult.isPlaceholderData) && options.placeholderData === (prevResultOptions == null ? void 0 : prevResultOptions.placeholderData)) {
        placeholderData = prevResult.data;
      } else {
        placeholderData = typeof options.placeholderData === 'function' ? options.placeholderData() : options.placeholderData;
      }

      if (typeof placeholderData !== 'undefined') {
        status = 'success';
        data = placeholderData;
        isPlaceholderData = true;
      }
    }

    var result = {
      status: status,
      isLoading: status === 'loading',
      isSuccess: status === 'success',
      isError: status === 'error',
      isIdle: status === 'idle',
      data: data,
      dataUpdatedAt: dataUpdatedAt,
      error: error,
      errorUpdatedAt: errorUpdatedAt,
      failureCount: state.fetchFailureCount,
      isFetched: state.dataUpdateCount > 0 || state.errorUpdateCount > 0,
      isFetchedAfterMount: state.dataUpdateCount > queryInitialState.dataUpdateCount || state.errorUpdateCount > queryInitialState.errorUpdateCount,
      isFetching: isFetching,
      isLoadingError: status === 'error' && state.dataUpdatedAt === 0,
      isPlaceholderData: isPlaceholderData,
      isPreviousData: isPreviousData,
      isRefetchError: status === 'error' && state.dataUpdatedAt !== 0,
      isStale: isStale(query, options),
      refetch: this.refetch,
      remove: this.remove
    };
    return result;
  };

  _proto.shouldNotifyListeners = function shouldNotifyListeners(result, prevResult) {
    if (!prevResult) {
      return true;
    }

    if (result === prevResult) {
      return false;
    }

    var _this$options = this.options,
        notifyOnChangeProps = _this$options.notifyOnChangeProps,
        notifyOnChangePropsExclusions = _this$options.notifyOnChangePropsExclusions;

    if (!notifyOnChangeProps && !notifyOnChangePropsExclusions) {
      return true;
    }

    if (notifyOnChangeProps === 'tracked' && !this.trackedProps.length) {
      return true;
    }

    var includedProps = notifyOnChangeProps === 'tracked' ? this.trackedProps : notifyOnChangeProps;
    return Object.keys(result).some(function (key) {
      var typedKey = key;
      var changed = result[typedKey] !== prevResult[typedKey];
      var isIncluded = includedProps == null ? void 0 : includedProps.some(function (x) {
        return x === key;
      });
      var isExcluded = notifyOnChangePropsExclusions == null ? void 0 : notifyOnChangePropsExclusions.some(function (x) {
        return x === key;
      });
      return changed && !isExcluded && (!includedProps || isIncluded);
    });
  };

  _proto.updateResult = function updateResult(notifyOptions) {
    var prevResult = this.currentResult;
    this.currentResult = this.createResult(this.currentQuery, this.options);
    this.currentResultState = this.currentQuery.state;
    this.currentResultOptions = this.options; // Only notify if something has changed

    if ((0, _utils.shallowEqualObjects)(this.currentResult, prevResult)) {
      return;
    } // Determine which callbacks to trigger


    var defaultNotifyOptions = {
      cache: true
    };

    if ((notifyOptions == null ? void 0 : notifyOptions.listeners) !== false && this.shouldNotifyListeners(this.currentResult, prevResult)) {
      defaultNotifyOptions.listeners = true;
    }

    this.notify((0, _extends2.default)({}, defaultNotifyOptions, notifyOptions));
  };

  _proto.updateQuery = function updateQuery() {
    var query = this.client.getQueryCache().build(this.client, this.options);

    if (query === this.currentQuery) {
      return;
    }

    var prevQuery = this.currentQuery;
    this.currentQuery = query;
    this.currentQueryInitialState = query.state;
    this.previousQueryResult = this.currentResult;

    if (this.hasListeners()) {
      prevQuery == null ? void 0 : prevQuery.removeObserver(this);
      query.addObserver(this);
    }
  };

  _proto.onQueryUpdate = function onQueryUpdate(action) {
    var notifyOptions = {};

    if (action.type === 'success') {
      notifyOptions.onSuccess = true;
    } else if (action.type === 'error') {
      notifyOptions.onError = true;
    }

    this.updateResult(notifyOptions);

    if (this.hasListeners()) {
      this.updateTimers();
    }
  };

  _proto.notify = function notify(notifyOptions) {
    var _this8 = this;

    _notifyManager.notifyManager.batch(function () {
      // First trigger the configuration callbacks
      if (notifyOptions.onSuccess) {
        _this8.options.onSuccess == null ? void 0 : _this8.options.onSuccess(_this8.currentResult.data);
        _this8.options.onSettled == null ? void 0 : _this8.options.onSettled(_this8.currentResult.data, null);
      } else if (notifyOptions.onError) {
        _this8.options.onError == null ? void 0 : _this8.options.onError(_this8.currentResult.error);
        _this8.options.onSettled == null ? void 0 : _this8.options.onSettled(undefined, _this8.currentResult.error);
      } // Then trigger the listeners


      if (notifyOptions.listeners) {
        _this8.listeners.forEach(function (listener) {
          listener(_this8.currentResult);
        });
      } // Then the cache listeners


      if (notifyOptions.cache) {
        _this8.client.getQueryCache().notify({
          query: _this8.currentQuery,
          type: 'observerResultsUpdated'
        });
      }
    });
  };

  return QueryObserver;
}(_subscribable.Subscribable);

exports.QueryObserver = QueryObserver;

function shouldLoadOnMount(query, options) {
  return options.enabled !== false && !query.state.dataUpdatedAt && !(query.state.status === 'error' && options.retryOnMount === false);
}

function shouldRefetchOnMount(query, options) {
  return options.enabled !== false && query.state.dataUpdatedAt > 0 && (options.refetchOnMount === 'always' || options.refetchOnMount !== false && isStale(query, options));
}

function shouldFetchOnMount(query, options) {
  return shouldLoadOnMount(query, options) || shouldRefetchOnMount(query, options);
}

function _shouldFetchOnReconnect(query, options) {
  return options.enabled !== false && (options.refetchOnReconnect === 'always' || options.refetchOnReconnect !== false && isStale(query, options));
}

function _shouldFetchOnWindowFocus(query, options) {
  return options.enabled !== false && (options.refetchOnWindowFocus === 'always' || options.refetchOnWindowFocus !== false && isStale(query, options));
}

function shouldFetchOptionally(query, prevQuery, options, prevOptions) {
  return options.enabled !== false && (query !== prevQuery || prevOptions.enabled === false) && isStale(query, options);
}

function isStale(query, options) {
  return query.isStaleByTime(options.staleTime);
}