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// because 'en' defaults to the OS variant - replace numeric month with short month to avoid ambiguity
const MONTH_FORMAT = 'short';
export default function getDateFormat( template: string, date: Date, locale = 'en' ): string {
let newDayMonthFormat;
let newYearFormat;
switch ( template ) {
case '{M}/{D}':
// only show day and month in a local format.
return date.toLocaleDateString( locale, { month: MONTH_FORMAT, day: 'numeric' } );
case '{M}/{D}\n{YYYY}':
// Show day, month and a year in local format.
newDayMonthFormat = date.toLocaleDateString( locale, {
month: MONTH_FORMAT,
day: 'numeric',
} );
newYearFormat = date.toLocaleDateString( locale, {
year: 'numeric',
} );
// add new line to match the format
return `${ newDayMonthFormat }\n${ newYearFormat }`;
case '{MMM}':
// only month
return date.toLocaleDateString( locale, {
month: MONTH_FORMAT,
} );
case '{MMM}\n{YYYY}':
// month and year
newDayMonthFormat = date.toLocaleDateString( locale, {
month: MONTH_FORMAT,
} );
newYearFormat = date.toLocaleDateString( locale, {
year: 'numeric',
} );
// add new line to match the format
return `${ newDayMonthFormat }\n${ newYearFormat }`;
default:
break;
}
// fallback that shouldn't happen.
return date.toLocaleDateString( locale );
}
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