duration - npm Package Compare versions

Comparing version 0.1.1 to 0.1.2

lib/duration.js

@@ -11,54 +11,37 @@ 'use strict';
   , yfloor      = require('es5-ext/lib/Date/prototype/floor-year')
+  , toInt       = require('es5-ext/lib/Number/to-int')
   , format      = require('es5-ext/lib/String/prototype/format')
 
-  , map, valueOf, getYear, Duration;
+  , abs = Math.abs
 
+  , map, valueOf, getYear, Duration, getCalcData;
+
 map = {
-	y: function () {
-		return String(this.year);
-	},
-	m: function () {
-		return pad.call(this.month, 2);
-	},
-	d: function () {
-		return pad.call(this.day, 2);
-	},
-	H: function () {
-		return pad.call(this.hour, 2);
-	},
-	M: function () {
-		return pad.call(this.minute, 2);
-	},
-	S: function () {
-		return pad.call(this.second, 2);
-	},
-	L: function () {
-		return pad.call(this.millisecond, 3);
-	},
+	y: function () { return String(abs(this.year)); },
+	m: function () { return pad.call(abs(this.month), 2); },
+	d: function () { return pad.call(abs(this.day), 2); },
+	H: function () { return pad.call(abs(this.hour), 2); },
+	M: function () { return pad.call(abs(this.minute), 2); },
+	S: function () { return pad.call(abs(this.second), 2); },
+	L: function () { return pad.call(abs(this.millisecond), 3); },
 
-	ms: function () {
-		return String(this.months);
-	},
-	ds: function () {
-		return String(this.days);
-	},
-	Hs: function () {
-		return String(this.hours);
-	},
-	Ms: function () {
-		return String(this.minutes);
-	},
-	Ss: function () {
-		return String(this.seconds);
-	},
-	Ls: function () {
-		return String(this.milliseconds);
-	}
+	ms: function () { return String(abs(this.months)); },
+	ds: function () { return String(abs(this.days)); },
+	Hs: function () { return String(abs(this.hours)); },
+	Ms: function () { return String(abs(this.minutes)); },
+	Ss: function () { return String(abs(this.seconds)); },
+	Ls: function () { return String(abs(this.milliseconds)); },
+
+	sign: function () { return (this.to < this.from) ? '-' : ''; }
 };
 
+getCalcData = function (duration) {
+	return (duration.to < duration.from) ?
+			{ to: duration.from, from: duration.to, sign: -1 } :
+			{ to: duration.to, from: duration.from, sign: 1 };
+};
+
 Duration = module.exports = function (from, to) {
 	// Make it both constructor and factory
-	if (!(this instanceof Duration)) {
-		return new Duration(from, to);
-	}
+	if (!(this instanceof Duration)) return new Duration(from, to);
 
@@ -70,55 +53,42 @@ this.from = date(from);
 Duration.prototype = Object.create(Object.prototype, {
-	valueOf: d(valueOf = function () {
-		return this.to - this.from;
-	}),
-
-	millisecond: d.gs(function () {
-		return this.milliseconds % 1000;
-	}),
-	second: d.gs(function () {
-		return this.seconds % 60;
-	}),
-	minute: d.gs(function () {
-		return this.minutes % 60;
-	}),
-	hour: d.gs(function () {
-		return this.hours % 24;
-	}),
+	valueOf: d(valueOf = function () { return this.to - this.from; }),
+	millisecond: d.gs(function () { return this.milliseconds % 1000; }),
+	second: d.gs(function () { return this.seconds % 60; }),
+	minute: d.gs(function () { return this.minutes % 60; }),
+	hour: d.gs(function () { return this.hours % 24; }),
 	day: d.gs(function () {
-		var x = copy.call(this.to);
+		var data = getCalcData(this)
+		  , x = copy.call(data.to);
 		x.setMonth(x.getMonth() - 1);
 		x = daysInMonth.call(x);
-		return (x - this.from.getDate() + this.to.getDate()) % x -
-			((this.from - dfloor.call(copy.call(this.from))) >
-				(this.to - dfloor.call(copy.call(this.to))));
+		return data.sign * ((x - data.from.getDate() + data.to.getDate()) % x -
+			((data.from - dfloor.call(copy.call(data.from))) >
+				(data.to - dfloor.call(copy.call(data.to)))));
 	}),
 	month: d.gs(function () {
-		return (12 - this.from.getMonth() + this.to.getMonth()) % 12 -
-			((this.from - mfloor.call(copy.call(this.from))) >
-				(this.to - mfloor.call(copy.call(this.to))));
+		var data = getCalcData(this);
+		return data.sign * ((12 - data.from.getMonth() + data.to.getMonth()) % 12 -
+			((data.from - mfloor.call(copy.call(data.from))) >
+				(data.to - mfloor.call(copy.call(data.to)))));
 	}),
 	year: d.gs(getYear = function () {
-		return this.to.getFullYear() - this.from.getFullYear() -
-			((this.from - yfloor.call(copy.call(this.from))) >
-				(this.to - yfloor.call(copy.call(this.to))));
+		var data = getCalcData(this);
+		return data.sign * (data.to.getFullYear() - data.from.getFullYear() -
+			((data.from - yfloor.call(copy.call(data.from))) >
+				(data.to - yfloor.call(copy.call(data.to)))));
 	}),
 
 	milliseconds: d.gs(valueOf, null),
-	seconds: d.gs(function () {
-		return Math.floor(this.valueOf() / 1000);
-	}),
-	minutes: d.gs(function () {
-		return Math.floor(this.valueOf() / (1000 * 60));
-	}),
-	hours: d.gs(function () {
-		return Math.floor(this.valueOf() / (1000 * 60 * 60));
-	}),
+	seconds: d.gs(function () { return toInt(this.valueOf() / 1000); }),
+	minutes: d.gs(function () { return toInt(this.valueOf() / (1000 * 60)); }),
+	hours: d.gs(function () { return toInt(this.valueOf() / (1000 * 60 * 60)); }),
 	days: d.gs(function () {
-		return Math.floor(this.valueOf() / (1000 * 60 * 60 * 24));
+		return toInt(this.valueOf() / (1000 * 60 * 60 * 24));
 	}),
 	months: d.gs(function () {
-		return (this.to.getFullYear() - this.from.getFullYear()) * 12 +
-			this.to.getMonth() - this.from.getMonth() -
-			((this.from - mfloor.call(copy.call(this.from))) >
-				(this.to - mfloor.call(copy.call(this.to))));
+		var data = getCalcData(this);
+		return data.sign * ((data.to.getFullYear() - data.from.getFullYear()) * 12 +
+			data.to.getMonth() - data.from.getMonth() -
+			((data.from - mfloor.call(copy.call(data.from))) >
+				(data.to - mfloor.call(copy.call(data.to)))));
 	}),
@@ -130,15 +100,15 @@ years: d.gs(getYear),
 		if (!pattern) {
-			s = "." +  pad.call(this.millisecond, 3);
+			s = "." +  pad.call(abs(this.millisecond), 3);
 			if (this.seconds) {
 				if (this.minutes) {
-					s = pad.call(this.minute, 2) + ":" +
-						pad.call(this.second, 2) + s;
+					s = pad.call(abs(this.minute), 2) + ":" +
+						pad.call(abs(this.second), 2) + s;
 					if (this.hours) {
-						s = pad.call(this.hour, 2) + ":" + s;
+						s = pad.call(abs(this.hour), 2) + ":" + s;
 						if (this.days) {
-							s = this.day + "d " + s;
+							s = abs(this.day) + "d " + s;
 							if (this.months) {
-								s = this.month + "m " + s;
+								s = abs(this.month) + "m " + s;
 								if (this.years) {
-									s = this.year + "y " + s;
+									s = abs(this.year) + "y " + s;
 								}
@@ -149,19 +119,20 @@ }
 				} else {
-					s = this.second + s;
+					s = abs(this.second) + s;
 				}
 			}
+			if (this.to < this.from) (s = '-' + s);
 		} else if (pattern === 1) {
-			s = this.millisecond + "ms";
+			s = abs(this.millisecond) + "ms";
 			if (this.seconds) {
-				s = this.second + "s " + s;
+				s = abs(this.second) + "s " + s;
 				if (this.minutes) {
-					s = this.minute + "m " + s;
+					s = abs(this.minute) + "m " + s;
 					if (this.hours) {
-						s = this.hour + "h " + s;
+						s = abs(this.hour) + "h " + s;
 						if (this.days) {
-							s = this.day + "d " + s;
+							s = abs(this.day) + "d " + s;
 							if (this.months) {
-								s = this.month + "m " + s;
+								s = abs(this.month) + "m " + s;
 								if (this.years) {
-									s = this.year + "y " + s;
+									s = abs(this.year) + "y " + s;
 								}
@@ -173,2 +144,3 @@ }
 			}
+			if (this.to < this.from) (s = '-' + s);
 		} else {
@@ -175,0 +147,0 @@ return format.call(pattern, map, this);

package.json

 {
   "author": "Mariusz Nowak <[e-mail]> (http://www.medikoo.com/)",
   "name": "duration",
-  "description": "Useful methods for working with time duration in JavaScript",
+  "description": "Time duration utilities",
   "keywords": [
@@ -10,3 +10,3 @@ "date",
   ],
-  "version": "0.1.1",
+  "version": "0.1.2",
   "repository": {
@@ -13,0 +13,0 @@ "url": "git://github.com/medikoo/duration.git"

README.md

@@ -158,2 +158,3 @@ # duration - Time duration utilities
 * `%Ls` - `duration.milliseconds`
+* `%sign` - If duration is negative outputs `-` otherwise empty string
 
@@ -160,0 +161,0 @@ ## Tests [![Build Status](https://secure.travis-ci.org/medikoo/duration.png?branch=master)](https://secure.travis-ci.org/medikoo/es5-ext)

test/duration.js

@@ -21,4 +21,4 @@ 'use strict';
 			d2.setMilliseconds(d2.getMilliseconds() + 11);
+
 			d = t(d1, d2);
-
 			a(d.milliseconds, 11, "Milliseconds");
@@ -41,6 +41,30 @@ a(d.valueOf(), d.milliseconds, "Value");
 
-			a(d.toString(), '.011', 'String presentation');
-			a(d.toString(1), '11ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 011.11.00.0.00.0.00.0.00.0.00.0.0 ', 'String presentation (custom)');
+			a(d.toString(), '.011', "String presentation");
+			a(d.toString(1), '11ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .011.11.00.0.00.0.00.0.00.0.00.0.0 ', "String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds, -11, "Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, 0, "Seconds: Negative");
+			a(d.minutes, 0, "Minutes: Negative");
+			a(d.hours, 0, "Hours: Negative");
+			a(d.days, 0, "Day: Negatives");
+			a(d.months, 0, "Months: Negative");
+			a(d.years, 0, "Years: Negative");
+
+			a(d.millisecond, -11, "Trailing milliseconds: Negative");
+			a(d.second, 0, "Trailing seconds: Negative");
+			a(d.minute, 0, "Trailing minutes: Negative");
+			a(d.hour, 0, "Trailing hours: Negative");
+			a(d.day, 0, "Trailing days: Negative");
+			a(d.month, 0, "Trailing months: Negative");
+			a(d.year, 0, "Trailing years: Negative");
+
+			a(d.toString(), '-.011', "String presentation: Negative");
+			a(d.toString(1), '-11ms', "String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.011.11.00.0.00.0.00.0.00.0.00.0.0 ',
+				"String presentation (custom): Negative");
 		},
@@ -52,4 +76,4 @@ "Seconds": function (a) {
 			d2.setSeconds(d2.getSeconds() + 7);
+
 			d = t(d1, d2);
-
 			a(d.milliseconds, 7 * 1000 + 123, "Milliseconds");
@@ -72,7 +96,31 @@ a(d.valueOf(), d.milliseconds, "Value");
 
-			a(d.toString(), '7.123', 'String presentation');
-			a(d.toString(1), '7s 123ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 123.' + (7 * 1000 + 123) + '.07.7.00.0.00.0.00.0.00.0.0 ',
-				'String presentation (custom)');
+			a(d.toString(), '7.123', "String presentation");
+			a(d.toString(1), '7s 123ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .123.' + (7 * 1000 + 123) + '.07.7.00.0.00.0.00.0.00.0.0 ',
+				"String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds, -(7 * 1000 + 123), "Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, -7, "Seconds: Negative");
+			a(d.minutes, 0, "Minutes: Negative");
+			a(d.hours, 0, "Hours: Negative");
+			a(d.days, 0, "Days: Negative");
+			a(d.months, 0, "Months: Negative");
+			a(d.years, 0, "Years: Negative");
+
+			a(d.millisecond, -123, "Trailing milliseconds: Negative");
+			a(d.second, -7, "Trailing seconds: Negative");
+			a(d.minute, 0, "Trailing minutes: Negative");
+			a(d.hour, 0, "Trailing hours: Negative");
+			a(d.day, 0, "Trailing days: Negative");
+			a(d.month, 0, "Trailing months: Negative");
+			a(d.year, 0, "Trailing years: Negative");
+
+			a(d.toString(), '-7.123', "String presentation: Negative");
+			a(d.toString(1), '-7s 123ms', "String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.123.' + (7 * 1000 + 123) + '.07.7.00.0.00.0.00.0.00.0.0 ',
+				"String presentation (custom): Negative");
 		},
@@ -85,4 +133,4 @@ "Minutes": function (a) {
 			d2.setMinutes(d2.getMinutes() + 7);
+
 			d = t(d1, d2);
-
 			a(d.milliseconds, 7 * 60 * 1000 + 12 * 1000 + 123, "Milliseconds");
@@ -105,7 +153,32 @@ a(d.valueOf(), d.milliseconds, "Value");
 
-			a(d.toString(), '07:12.123', 'String presentation');
-			a(d.toString(1), '7m 12s 123ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 123.' + (7 * 60 * 1000 + 12 * 1000 + 123) + '.12.' + (7 * 60 + 12) +
-				'.07.7.00.0.00.0.00.0.0 ', 'String presentation (custom)');
+			a(d.toString(), '07:12.123', "String presentation");
+			a(d.toString(1), '7m 12s 123ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .123.' + (7 * 60 * 1000 + 12 * 1000 + 123) + '.12.' + (7 * 60 + 12) +
+				'.07.7.00.0.00.0.00.0.0 ', "String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds, -(7 * 60 * 1000 + 12 * 1000 + 123),
+				"Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, -(7 * 60 + 12), "Seconds: Negative");
+			a(d.minutes, -7, "Minutes: Negative");
+			a(d.hours, 0, "Hours: Negative");
+			a(d.days, 0, "Days: Negative");
+			a(d.months, 0, "Months: Negative");
+			a(d.years, 0, "Years: Negative");
+
+			a(d.millisecond, -123, "Trailing milliseconds: Negative");
+			a(d.second, -12, "Trailing seconds: Negative");
+			a(d.minute, -7, "Trailing minutes: Negative");
+			a(d.hour, 0, "Trailing hours: Negative");
+			a(d.day, 0, "Trailing days: Negative");
+			a(d.month, 0, "Trailing months: Negative");
+			a(d.year, 0, "Trailing years: Negative");
+
+			a(d.toString(), '-07:12.123', "String presentation: Negative");
+			a(d.toString(1), '-7m 12s 123ms', "String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.123.' + (7 * 60 * 1000 + 12 * 1000 + 123) + '.12.' + (7 * 60 + 12) +
+				'.07.7.00.0.00.0.00.0.0 ', "String presentation (custom): Negative");
 		},
@@ -119,4 +192,4 @@ "Hours": function (a) {
 			d2.setHours(d2.getHours() + 4);
+
 			d = t(d1, d2);
-
 			a(d.milliseconds,
@@ -140,8 +213,35 @@ 4 * 60 * 60 * 1000 + 7 * 60 * 1000 + 12 * 1000 + 123, "Milliseconds");
 
-			a(d.toString(), '04:07:12.123', 'String presentation');
-			a(d.toString(1), '4h 7m 12s 123ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 123.' + (4 * 60 * 60 * 1000 + 7 * 60 * 1000 + 12 * 1000 + 123) +
+			a(d.toString(), '04:07:12.123', "String presentation");
+			a(d.toString(1), '4h 7m 12s 123ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .123.' + (4 * 60 * 60 * 1000 + 7 * 60 * 1000 + 12 * 1000 + 123) +
 				'.12.' + (4 * 60 * 60 + 7 * 60 + 12) + '.07.' + (4 * 60 + 7) +
-				'.04.4.00.0.00.0.0 ', 'String presentation (custom)');
+				'.04.4.00.0.00.0.0 ', "String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds,
+				-(4 * 60 * 60 * 1000 + 7 * 60 * 1000 + 12 * 1000 + 123),
+				"Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, -(4 * 60 * 60 + 7 * 60 + 12), "Seconds: Negative");
+			a(d.minutes, -(4 * 60 + 7), "Minutes: Negative");
+			a(d.hours, -4, "Hours: Negative");
+			a(d.days, 0, "Days: Negative");
+			a(d.months, 0, "Months: Negative");
+			a(d.years, 0, "Years: Negative");
+
+			a(d.millisecond, -123, "Trailing milliseconds: Negative");
+			a(d.second, -12, "Trailing seconds: Negative");
+			a(d.minute, -7, "Trailing minutes: Negative");
+			a(d.hour, -4, "Trailing hours: Negative");
+			a(d.day, 0, "Trailing days: Negative");
+			a(d.month, 0, "Trailing months: Negative");
+			a(d.year, 0, "Trailing years: Negative");
+
+			a(d.toString(), '-04:07:12.123', "String presentation: Negative");
+			a(d.toString(1), '-4h 7m 12s 123ms', "String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.123.' + (4 * 60 * 60 * 1000 + 7 * 60 * 1000 + 12 * 1000 + 123) +
+				'.12.' + (4 * 60 * 60 + 7 * 60 + 12) + '.07.' + (4 * 60 + 7) +
+				'.04.4.00.0.00.0.0 ', "String presentation (custom): Negative");
 		},
@@ -156,4 +256,4 @@ "Days": function (a) {
 			d2.setDate(d2.getDate() + 2);
+
 			d = t(d1, d2);
-
 			a(d.milliseconds, 2 * 24 * 60 * 60 * 1000 + 14 * 60 * 60 * 1000 +
@@ -178,10 +278,40 @@ 7 * 60 * 1000 + 12 * 1000 + 123, "Milliseconds");
 
-			a(d.toString(), '2d 14:07:12.123', 'String presentation');
-			a(d.toString(1), '2d 14h 7m 12s 123ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 123.' + (2 * 24 * 60 * 60 * 1000 + 14 * 60 * 60 * 1000 +
+			a(d.toString(), '2d 14:07:12.123', "String presentation");
+			a(d.toString(1), '2d 14h 7m 12s 123ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .123.' + (2 * 24 * 60 * 60 * 1000 + 14 * 60 * 60 * 1000 +
 					7 * 60 * 1000 + 12 * 1000 + 123) + '.12.' +
 				(2 * 24 * 60 * 60 + 14 * 60 * 60 + 7 * 60 + 12) + '.07.' +
 				(2 * 24 * 60 + 14 * 60 + 7) + '.14.' + (2 * 24 + 14) +
-				'.02.2.00.0.0 ', 'String presentation (custom)');
+				'.02.2.00.0.0 ', "String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds, -(2 * 24 * 60 * 60 * 1000 + 14 * 60 * 60 * 1000 +
+				7 * 60 * 1000 + 12 * 1000 + 123), "Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, -(2 * 24 * 60 * 60 + 14 * 60 * 60 + 7 * 60 + 12),
+				"Seconds: Negative");
+			a(d.minutes, -(2 * 24 * 60 + 14 * 60 + 7), "Minutes: Negative");
+			a(d.hours, -(2 * 24 + 14), "Hours: Negative");
+			a(d.days, -2, "Days: Negative");
+			a(d.months, 0, "Months: Negative");
+			a(d.years, 0, "Years: Negative");
+
+			a(d.millisecond, -123, "Trailing milliseconds: Negative");
+			a(d.second, -12, "Trailing seconds: Negative");
+			a(d.minute, -7, "Trailing minutes: Negative");
+			a(d.hour, -14, "Trailing hours: Negative");
+			a(d.day, -2, "Trailing days: Negative");
+			a(d.month, 0, "Trailing months: Negative");
+			a(d.year, 0, "Trailing years: Negative");
+
+			a(d.toString(), '-2d 14:07:12.123', "String presentation: Negative");
+			a(d.toString(1), '-2d 14h 7m 12s 123ms',
+				"String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.123.' + (2 * 24 * 60 * 60 * 1000 + 14 * 60 * 60 * 1000 +
+					7 * 60 * 1000 + 12 * 1000 + 123) + '.12.' +
+				(2 * 24 * 60 * 60 + 14 * 60 * 60 + 7 * 60 + 12) + '.07.' +
+				(2 * 24 * 60 + 14 * 60 + 7) + '.14.' + (2 * 24 + 14) +
+				'.02.2.00.0.0 ', "String presentation (custom): Negative");
 		},
@@ -192,4 +322,4 @@ "Large duration": function (a) {
 			d2 = new Date(Date.UTC(2003, 3, 2, 1, 1, 1, 1));
+
 			d = t(d1, d2);
-
 			a(d.milliseconds, days * 24 * 60 * 60 * 1000, "Milliseconds");
@@ -212,11 +342,40 @@ a(d.valueOf(), d.milliseconds, "Value");
 
-			a(d.toString(), '2y 2m 0d 00:00:00.000', 'String presentation');
-			a(d.toString(1), '2y 2m 0d 0h 0m 0s 0ms', 'String presentation #2');
-			a(d.toString(' %L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
-				' 000.' + (days * 24 * 60 * 60 * 1000) + '.00.' +
+			a(d.toString(), '2y 2m 0d 00:00:00.000', "String presentation");
+			a(d.toString(1), '2y 2m 0d 0h 0m 0s 0ms', "String presentation #2");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' .000.' + (days * 24 * 60 * 60 * 1000) + '.00.' +
 				(days * 24 * 60 * 60) + '.00.' + (days * 24 * 60) + '.00.' +
 				(days * 24) + '.00.' + days + '.02.' + 26 + '.2 ',
-				'String presentation (custom)');
+				"String presentation (custom)");
+
+			d = t(d2, d1);
+			a(d.milliseconds, -(days * 24 * 60 * 60 * 1000),
+				"Milliseconds: Negative");
+			a(d.valueOf(), d.milliseconds, "Value: Negative");
+			a(d.seconds, -(days * 24 * 60 * 60), "Seconds: Negative");
+			a(d.minutes, -(days * 24 * 60), "Minutes: Negative");
+			a(d.hours, -(days * 24), "Hours: Negative");
+			a(d.days, -days, "Days: Negative");
+			a(d.months, -26, "Months: Negative");
+			a(d.years, -2, "Years: Negative");
+
+			a(d.millisecond, 0, "Trailing milliseconds: Negative");
+			a(d.second, 0, "Trailing seconds: Negative");
+			a(d.minute, 0, "Trailing minutes: Negative");
+			a(d.hour, 0, "Trailing hours: Negative");
+			a(d.day, 0, "Trailing days: Negative");
+			a(d.month, -2, "Trailing months: Negative");
+			a(d.year, -2, "Trailing years: Negative");
+
+			a(d.toString(), '-2y 2m 0d 00:00:00.000',
+				"String presentation: Negative");
+			a(d.toString(1), '-2y 2m 0d 0h 0m 0s 0ms',
+				"String presentation #2: Negative");
+			a(d.toString(' %sign.%L.%Ls.%S.%Ss.%M.%Ms.%H.%Hs.%d.%ds.%m.%ms.%y '),
+				' -.000.' + (days * 24 * 60 * 60 * 1000) + '.00.' +
+				(days * 24 * 60 * 60) + '.00.' + (days * 24 * 60) + '.00.' +
+				(days * 24) + '.00.' + days + '.02.' + 26 + '.2 ',
+				"String presentation (custom): Negative");
 		}
 	};
 };

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Major refactor

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Improved metrics

Total package byte prevSize

25981

increased by43.41%

Lines of code

464

increased by31.44%

Number of lines in readme file

163

increased by0.62%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes