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

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+import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
+import useState from "rc-util/es/hooks/useState";
+import * as React from 'react';
+import { STEP_ACTIVATED, STEP_ACTIVE, STEP_NONE, STEP_PREPARE, STEP_PREPARED, STEP_START } from "../interface";
+import useIsomorphicLayoutEffect from "./useIsomorphicLayoutEffect";
+import useNextFrame from "./useNextFrame";
+var FULL_STEP_QUEUE = [STEP_PREPARE, STEP_START, STEP_ACTIVE, STEP_ACTIVATED];
+var SIMPLE_STEP_QUEUE = [STEP_PREPARE, STEP_PREPARED];
+
+/** 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, prepareOnly, 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, true);
+  }
+  var STEP_QUEUE = prepareOnly ? SIMPLE_STEP_QUEUE : FULL_STEP_QUEUE;
+  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, true);
+      } else if (nextStep) {
+        // Do as frame for step update
+        nextFrame(function (info) {
+          function doNext() {
+            // Skip since current queue is ood
+            if (info.isCanceled()) return;
+            setStep(nextStep, true);
+          }
+          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];
+});