1 | /*
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2 | * Copyright 2024 Adobe. All rights reserved.
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3 | * This file is licensed to you under the Apache License, Version 2.0 (the "License");
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4 | * you may not use this file except in compliance with the License. You may obtain a copy
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5 | * of the License at http://www.apache.org/licenses/LICENSE-2.0
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6 | *
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7 | * Unless required by applicable law or agreed to in writing, software distributed under
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8 | * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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9 | * OF ANY KIND, either express or implied. See the License for the specific language
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10 | * governing permissions and limitations under the License.
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11 | */
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12 |
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13 | import {EffectCallback, useRef} from 'react';
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14 | import {useLayoutEffect} from './useLayoutEffect';
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15 |
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16 | // Like useLayoutEffect, but only called for updates after the initial render.
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17 | export function useUpdateLayoutEffect(effect: EffectCallback, dependencies: any[]) {
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18 | const isInitialMount = useRef(true);
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19 | const lastDeps = useRef<any[] | null>(null);
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20 |
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21 | useLayoutEffect(() => {
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22 | isInitialMount.current = true;
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23 | return () => {
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24 | isInitialMount.current = false;
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25 | };
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26 | }, []);
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27 |
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28 | useLayoutEffect(() => {
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29 | if (isInitialMount.current) {
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30 | isInitialMount.current = false;
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31 | } else if (!lastDeps.current || dependencies.some((dep, i) => !Object.is(dep, lastDeps[i]))) {
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32 | effect();
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33 | }
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34 | lastDeps.current = dependencies;
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35 | // eslint-disable-next-line react-hooks/exhaustive-deps
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36 | }, dependencies);
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37 | }
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