antd/es/form/hooks/useCacheErrors.js

An enterprise-class UI design language and React components implementation

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

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

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 _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

import * as React from 'react';
/**
 * Always debounce error to avoid [error -> null -> error] blink
 */

export default function useCacheErrors(errors, changeTrigger, directly) {
  var cacheRef = React.useRef({
    errors: errors,
    visible: !!errors.length
  });

  var _React$useState = React.useState({}),
      _React$useState2 = _slicedToArray(_React$useState, 2),
      forceUpdate = _React$useState2[1];

  var update = function update() {
    var prevVisible = cacheRef.current.visible;
    var newVisible = !!errors.length;
    var prevErrors = cacheRef.current.errors;
    cacheRef.current.errors = errors;
    cacheRef.current.visible = newVisible;

    if (prevVisible !== newVisible) {
      changeTrigger(newVisible);
    } else if (prevErrors.length !== errors.length || prevErrors.some(function (prevErr, index) {
      return prevErr !== errors[index];
    })) {
      forceUpdate({});
    }
  };

  React.useEffect(function () {
    if (!directly) {
      var timeout = setTimeout(update, 10);
      return function () {
        return clearTimeout(timeout);
      };
    }
  }, [errors]);

  if (directly) {
    update();
  }

  return [cacheRef.current.visible, cacheRef.current.errors];
}