zustand-middleware-computed-state/index.cjs.js

Computed state middleware for Zustand

'use strict';

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

var _extends = require('@babel/runtime/helpers/extends');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var _extends__default = /*#__PURE__*/_interopDefaultLegacy(_extends);

var computed = function computed(create, compute) {
  return function (set, get, api) {
    var setWithComputed = function setWithComputed(update, replace) {
      set(function (state) {
        var updated = typeof update === 'function' ? update(state) : update;
        var computedState = compute(_extends__default['default']({}, state, updated));
        return _extends__default['default']({}, updated, computedState);
      }, replace);
    };

    api.setState = setWithComputed;
    var state = create(setWithComputed, get, api);
    return _extends__default['default']({}, state, compute(state));
  };
};

exports.computed = computed;