Get string format for date based on locale

user_19393416 0
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I am trying to get the format string for dates like "dd/MM/yyyy" based on locale. I want to use it in a picker date component to change the default format based on language.

react-native typescript reactjs javascript
1 Answers

I have a solution but I would like others if is possible.

function getDateFormatPattern(locale: string) {
    const getPatternForPart = (part: Intl.DateTimeFormatPart) => {
        switch (part.type) {
            case 'day':
                return 'd'.repeat(part.value.length);
            case 'month':
                return 'M'.repeat(part.value.length);
            case 'year':
                return 'y'.repeat(part.value.length);
            case 'literal':
                return part.value;
        }
    };

    return new Intl.DateTimeFormat(locale).formatToParts(new Date('2022-01-01'))
        .map(getPatternForPart)
        .join('');
};
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