@mcdevsl/superset-ui
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text/typescript
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import { useLayoutEffect, useRef, useMemo } from 'react';
/**
* Execute a memoized callback only when mounted. Execute again when factory updated.
* Returns undefined if not mounted yet.
*/
export default function useMountedMemo<T>(factory: () => T, deps?: unknown[]): T | undefined {
const mounted = useRef<typeof factory>();
useLayoutEffect(() => {
mounted.current = factory;
});
return useMemo(() => {
if (mounted.current) {
return factory();
}
return undefined;
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [mounted.current, mounted.current === factory, ...(deps || [])]);
}