InternshipProject/node_modules/rc-motion/es/hooks/useStepQueue.js

import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
import * as React from 'react';
import { STEP_PREPARE, STEP_ACTIVE, STEP_START, STEP_ACTIVATED, STEP_NONE } from '../interface';
import useIsomorphicLayoutEffect from './useIsomorphicLayoutEffect';
import useNextFrame from './useNextFrame';
import useState from './useState';
var STEP_QUEUE = [STEP_PREPARE, STEP_START, STEP_ACTIVE, STEP_ACTIVATED];
/** Skip current step */

export var SkipStep = false;
/** Current step should be update in */

export var DoStep = true;
export function isActive(step) {
  return step === STEP_ACTIVE || step === STEP_ACTIVATED;
}
export default (function (status, callback) {
  var _useState = useState(STEP_NONE),
      _useState2 = _slicedToArray(_useState, 2),
      step = _useState2[0],
      setStep = _useState2[1];

  var _useNextFrame = useNextFrame(),
      _useNextFrame2 = _slicedToArray(_useNextFrame, 2),
      nextFrame = _useNextFrame2[0],
      cancelNextFrame = _useNextFrame2[1];

  function startQueue() {
    setStep(STEP_PREPARE);
  }

  useIsomorphicLayoutEffect(function () {
    if (step !== STEP_NONE && step !== STEP_ACTIVATED) {
      var index = STEP_QUEUE.indexOf(step);
      var nextStep = STEP_QUEUE[index + 1];
      var result = callback(step);

      if (result === SkipStep) {
        // Skip when no needed
        setStep(nextStep);
      } else {
        // Do as frame for step update
        nextFrame(function (info) {
          function doNext() {
            // Skip since current queue is ood
            if (info.isCanceled()) return;
            setStep(nextStep);
          }

          if (result === true) {
            doNext();
          } else {
            // Only promise should be async
            Promise.resolve(result).then(doNext);
          }
        });
      }
    }
  }, [status, step]);
  React.useEffect(function () {
    return function () {
      cancelNextFrame();
    };
  }, []);
  return [startQueue, step];
});