All files / src/components/utils useDefaultTimeZone.ts

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import React from 'react';
 
import type {DateTime} from '@gravity-ui/date-utils';
 
export function useDefaultTimeZone(date: DateTime | null | undefined) {
    const defaultTimeZone = date ? date.timeZone() : 'default';
 
    const [lastValue, setLastValue] = React.useState(defaultTimeZone);
 
    if (date && defaultTimeZone !== lastValue) {
        setLastValue(defaultTimeZone);
    }
 
    const timeZone = date ? defaultTimeZone : lastValue;
    return timeZone;
}