bc518174
 王天杨
提交两个项目文件
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import {
addWeeks,
endOfMonth,
getWeeksInMonth,
Locale,
startOfMonth
} from 'date-fns';
import { daysToMonthWeeks } from './daysToMonthWeeks';
/** Represents a week in the month.*/
export type MonthWeek = {
/** The week number from the start of the year. */
weekNumber: number;
/** The dates in the week. */
dates: Date[];
};
/**
* Return the weeks belonging to the given month, adding the "outside days" to
* the first and last week.
*/
export function getMonthWeeks(
month: Date,
options: {
locale: Locale;
useFixedWeeks?: boolean;
weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6;
firstWeekContainsDate?: 1 | 4;
ISOWeek?: boolean;
}
): MonthWeek[] {
const weeksInMonth: MonthWeek[] = daysToMonthWeeks(
startOfMonth(month),
endOfMonth(month),
options
);
if (options?.useFixedWeeks) {
// Add extra weeks to the month, up to 6 weeks
const nrOfMonthWeeks = getWeeksInMonth(month, options);
if (nrOfMonthWeeks < 6) {
const lastWeek = weeksInMonth[weeksInMonth.length - 1];
const lastDate = lastWeek.dates[lastWeek.dates.length - 1];
const toDate = addWeeks(lastDate, 6 - nrOfMonthWeeks);
const extraWeeks = daysToMonthWeeks(
addWeeks(lastDate, 1),
toDate,
options
);
weeksInMonth.push(...extraWeeks);
}
}
return weeksInMonth;
}
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