@tanstack/db/dist/cjs/utils.cjs

A reactive client store for building super fast apps on sync

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
function deepEquals(a, b) {
  return deepEqualsInternal(a, b, /* @__PURE__ */ new Map());
}
function deepEqualsInternal(a, b, visited) {
  if (a === b) return true;
  if (a == null || b == null) return false;
  if (typeof a !== typeof b) return false;
  if (Array.isArray(a)) {
    if (!Array.isArray(b) || a.length !== b.length) return false;
    if (visited.has(a)) {
      return visited.get(a) === b;
    }
    visited.set(a, b);
    const result = a.every(
      (item, index) => deepEqualsInternal(item, b[index], visited)
    );
    visited.delete(a);
    return result;
  }
  if (typeof a === `object`) {
    if (visited.has(a)) {
      return visited.get(a) === b;
    }
    visited.set(a, b);
    const keysA = Object.keys(a);
    const keysB = Object.keys(b);
    if (keysA.length !== keysB.length) {
      visited.delete(a);
      return false;
    }
    const result = keysA.every(
      (key) => key in b && deepEqualsInternal(a[key], b[key], visited)
    );
    visited.delete(a);
    return result;
  }
  return false;
}
exports.deepEquals = deepEquals;
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