@tanstack/query-core/build/modern/utils.js

The framework agnostic core that powers TanStack Query

// src/utils.ts
var isServer = typeof window === "undefined" || "Deno" in window;
function noop() {
  return void 0;
}
function functionalUpdate(updater, input) {
  return typeof updater === "function" ? updater(input) : updater;
}
function isValidTimeout(value) {
  return typeof value === "number" && value >= 0 && value !== Infinity;
}
function timeUntilStale(updatedAt, staleTime) {
  return Math.max(updatedAt + (staleTime || 0) - Date.now(), 0);
}
function matchQuery(filters, query) {
  const {
    type = "all",
    exact,
    fetchStatus,
    predicate,
    queryKey,
    stale
  } = filters;
  if (queryKey) {
    if (exact) {
      if (query.queryHash !== hashQueryKeyByOptions(queryKey, query.options)) {
        return false;
      }
    } else if (!partialMatchKey(query.queryKey, queryKey)) {
      return false;
    }
  }
  if (type !== "all") {
    const isActive = query.isActive();
    if (type === "active" && !isActive) {
      return false;
    }
    if (type === "inactive" && isActive) {
      return false;
    }
  }
  if (typeof stale === "boolean" && query.isStale() !== stale) {
    return false;
  }
  if (typeof fetchStatus !== "undefined" && fetchStatus !== query.state.fetchStatus) {
    return false;
  }
  if (predicate && !predicate(query)) {
    return false;
  }
  return true;
}
function matchMutation(filters, mutation) {
  const { exact, status, predicate, mutationKey } = filters;
  if (mutationKey) {
    if (!mutation.options.mutationKey) {
      return false;
    }
    if (exact) {
      if (hashKey(mutation.options.mutationKey) !== hashKey(mutationKey)) {
        return false;
      }
    } else if (!partialMatchKey(mutation.options.mutationKey, mutationKey)) {
      return false;
    }
  }
  if (status && mutation.state.status !== status) {
    return false;
  }
  if (predicate && !predicate(mutation)) {
    return false;
  }
  return true;
}
function hashQueryKeyByOptions(queryKey, options) {
  const hashFn = options?.queryKeyHashFn || hashKey;
  return hashFn(queryKey);
}
function hashKey(queryKey) {
  return JSON.stringify(
    queryKey,
    (_, val) => isPlainObject(val) ? Object.keys(val).sort().reduce((result, key) => {
      result[key] = val[key];
      return result;
    }, {}) : val
  );
}
function partialMatchKey(a, b) {
  if (a === b) {
    return true;
  }
  if (typeof a !== typeof b) {
    return false;
  }
  if (a && b && typeof a === "object" && typeof b === "object") {
    return !Object.keys(b).some((key) => !partialMatchKey(a[key], b[key]));
  }
  return false;
}
function replaceEqualDeep(a, b) {
  if (a === b) {
    return a;
  }
  const array = isPlainArray(a) && isPlainArray(b);
  if (array || isPlainObject(a) && isPlainObject(b)) {
    const aSize = array ? a.length : Object.keys(a).length;
    const bItems = array ? b : Object.keys(b);
    const bSize = bItems.length;
    const copy = array ? [] : {};
    let equalItems = 0;
    for (let i = 0; i < bSize; i++) {
      const key = array ? i : bItems[i];
      copy[key] = replaceEqualDeep(a[key], b[key]);
      if (copy[key] === a[key]) {
        equalItems++;
      }
    }
    return aSize === bSize && equalItems === aSize ? a : copy;
  }
  return b;
}
function shallowEqualObjects(a, b) {
  if (a && !b || b && !a) {
    return false;
  }
  for (const key in a) {
    if (a[key] !== b[key]) {
      return false;
    }
  }
  return true;
}
function isPlainArray(value) {
  return Array.isArray(value) && value.length === Object.keys(value).length;
}
function isPlainObject(o) {
  if (!hasObjectPrototype(o)) {
    return false;
  }
  const ctor = o.constructor;
  if (typeof ctor === "undefined") {
    return true;
  }
  const prot = ctor.prototype;
  if (!hasObjectPrototype(prot)) {
    return false;
  }
  if (!prot.hasOwnProperty("isPrototypeOf")) {
    return false;
  }
  return true;
}
function hasObjectPrototype(o) {
  return Object.prototype.toString.call(o) === "[object Object]";
}
function sleep(timeout) {
  return new Promise((resolve) => {
    setTimeout(resolve, timeout);
  });
}
function scheduleMicrotask(callback) {
  sleep(0).then(callback);
}
function replaceData(prevData, data, options) {
  if (typeof options.structuralSharing === "function") {
    return options.structuralSharing(prevData, data);
  } else if (options.structuralSharing !== false) {
    return replaceEqualDeep(prevData, data);
  }
  return data;
}
function keepPreviousData(previousData) {
  return previousData;
}
function addToEnd(items, item, max = 0) {
  const newItems = [...items, item];
  return max && newItems.length > max ? newItems.slice(1) : newItems;
}
function addToStart(items, item, max = 0) {
  const newItems = [item, ...items];
  return max && newItems.length > max ? newItems.slice(0, -1) : newItems;
}
export {
  addToEnd,
  addToStart,
  functionalUpdate,
  hashKey,
  hashQueryKeyByOptions,
  isPlainArray,
  isPlainObject,
  isServer,
  isValidTimeout,
  keepPreviousData,
  matchMutation,
  matchQuery,
  noop,
  partialMatchKey,
  replaceData,
  replaceEqualDeep,
  scheduleMicrotask,
  shallowEqualObjects,
  sleep,
  timeUntilStale
};
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