14 lines
364 B
TypeScript
14 lines
364 B
TypeScript
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import { useEffect, useState } from 'react'
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/**
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* Returns the last truthy value of type T
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* @param value changing value
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*/
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export default function useLast<T>(value: T | undefined | null): T | null | undefined {
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const [last, setLast] = useState<T | null | undefined>(value)
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useEffect(() => {
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setLast(last => value ?? last)
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}, [value])
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return last
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}
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