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39 lines
1.3 KiB
TypeScript
39 lines
1.3 KiB
TypeScript
/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import { useEffect } from 'react';
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import { usePrevious } from '../usePrevious';
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/**
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* Calls the callback when the value changes.
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*
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* Passes the previous and current values to the callback
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*/
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export function useChangeEffect<T>(
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value: T,
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callback: (previous: T | undefined, current: T) => void,
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) {
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const previous = usePrevious(value);
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useEffect(() => {
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if (value !== previous) {
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callback(previous, value);
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}
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}, [value, previous, callback]);
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}
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