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import { createLocal } from '../create/local';
import { cloneWithOffset } from '../units/offset';
import isFunction from '../utils/is-function';
import { hooks } from '../utils/hooks';
import { isMomentInput } from '../utils/is-moment-input';
import isCalendarSpec from '../utils/is-calendar-spec';
export function getCalendarFormat(myMoment, now) {
var diff = myMoment.diff(now, 'days', true);
return diff < -6
? 'sameElse'
: diff < -1
? 'lastWeek'
: diff < 0
? 'lastDay'
: diff < 1
? 'sameDay'
: diff < 2
? 'nextDay'
: diff < 7
? 'nextWeek'
: 'sameElse';
}
export function calendar(time, formats) {
// Support for single parameter, formats only overload to the calendar function
if (arguments.length === 1) {
if (!arguments[0]) {
time = undefined;
formats = undefined;
} else if (isMomentInput(arguments[0])) {
time = arguments[0];
formats = undefined;
} else if (isCalendarSpec(arguments[0])) {
formats = arguments[0];
time = undefined;
}
}
// We want to compare the start of today, vs this.
// Getting start-of-today depends on whether we're local/utc/offset or not.
var now = time || createLocal(),
sod = cloneWithOffset(now, this).startOf('day'),
format = hooks.calendarFormat(this, sod) || 'sameElse',
output =
formats &&
(isFunction(formats[format])
? formats[format].call(this, now)
: formats[format]);
return this.format(
output || this.localeData().calendar(format, this, createLocal(now))
);
}
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