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-rw-r--r--library/moment/src/lib/duration/iso-string.js52
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diff --git a/library/moment/src/lib/duration/iso-string.js b/library/moment/src/lib/duration/iso-string.js
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+++ b/library/moment/src/lib/duration/iso-string.js
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+import absFloor from '../utils/abs-floor';
+var abs = Math.abs;
+
+export function toISOString() {
+ // for ISO strings we do not use the normal bubbling rules:
+ // * milliseconds bubble up until they become hours
+ // * days do not bubble at all
+ // * months bubble up until they become years
+ // This is because there is no context-free conversion between hours and days
+ // (think of clock changes)
+ // and also not between days and months (28-31 days per month)
+ var seconds = abs(this._milliseconds) / 1000;
+ var days = abs(this._days);
+ var months = abs(this._months);
+ var minutes, hours, years;
+
+ // 3600 seconds -> 60 minutes -> 1 hour
+ minutes = absFloor(seconds / 60);
+ hours = absFloor(minutes / 60);
+ seconds %= 60;
+ minutes %= 60;
+
+ // 12 months -> 1 year
+ years = absFloor(months / 12);
+ months %= 12;
+
+
+ // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
+ var Y = years;
+ var M = months;
+ var D = days;
+ var h = hours;
+ var m = minutes;
+ var s = seconds;
+ var total = this.asSeconds();
+
+ if (!total) {
+ // this is the same as C#'s (Noda) and python (isodate)...
+ // but not other JS (goog.date)
+ return 'P0D';
+ }
+
+ return (total < 0 ? '-' : '') +
+ 'P' +
+ (Y ? Y + 'Y' : '') +
+ (M ? M + 'M' : '') +
+ (D ? D + 'D' : '') +
+ ((h || m || s) ? 'T' : '') +
+ (h ? h + 'H' : '') +
+ (m ? m + 'M' : '') +
+ (s ? s + 'S' : '');
+}