fix: correct handle fraction of a seconds in parseIso

closes #16

Author: standy

src/parse/parse-iso.test.ts

@@ -56,6 +56,11 @@ describe('parseIso', function() {
 				dateStr: '2017-06-01T12:34:5',
 				correctResult: null,
 			},
+			{
+				/* NOTE too much seconds */
+				dateStr: '2017-06-01T12:34:567',
+				correctResult: null,
+			},
 			{
 				dateStr: '',
 				correctResult: null,
@@ -80,6 +85,16 @@ describe('parseIso', function() {
 				dateStr: '2017-06-01T09:00+13:60',
 				correctResult: null,
 			},
+			{
+				/* NOTE there is no fractional milliseconds in Date object */
+				dateStr: '2017-06-01T12:34:56.78999999999999999',
+				correctResult: newValidDate(2017, Month.Jun, 1, 12, 34, 56, 789),
+			},
+			{
+				/* NOTE there is no fractional milliseconds in Date object */
+				dateStr: '2017-06-01T12:34:56.7890123456789-03:00',
+				correctResult: newValidDate('2017-06-01T15:34:56.789Z'),
+			},
 		];
 
 		for (let i = 0; i < FORMATS.length; i++) {

src/parse/parse-iso.ts

@@ -3,9 +3,12 @@ import {ValidDate} from '../valid-date';
 function toNumber(value: string | undefined, defaultValue: number) {
 	return typeof value === 'undefined' ? defaultValue : +value;
 }
+function toNumberMs(value: string | undefined) {
+	return typeof value === 'undefined' ? 0 : +value.substring(0, 4) * 1000;
+}
 
-//                  (  YYYY  )     ( MM )       ( DD )      ( HH )  ( MM )     ( SS )(    MS   )   (      TZD            )
-const ISO_RX = /^\s*(\d{4,6}?)(?:-?(\d\d))?(?:-?(\d\d))?(?:T(\d\d):?(\d\d):?(?:(\d\d)(\.\d{1,3})?)?([+-]\d\d?(?::\d\d)?|Z)?)?\s*$/;
+//                  (  YYYY  )     ( MM )       ( DD )      ( HH )  ( MM )     ( SS )(  MS )   (      TZD            )
+const ISO_RX = /^\s*(\d{4,6}?)(?:-?(\d\d))?(?:-?(\d\d))?(?:T(\d\d):?(\d\d):?(?:(\d\d)(\.\d+)?)?([+-]\d\d?(?::\d\d)?|Z)?)?\s*$/;
 export function parseIso(dateStr: string): ValidDate | null {
 	if (!dateStr) return null;
 	const timeList = dateStr.match(ISO_RX);
@@ -22,7 +25,7 @@ export function parseIso(dateStr: string): ValidDate | null {
 	const H = toNumber(timeList[4], 0);
 	const m = toNumber(timeList[5], 0);
 	const s = toNumber(timeList[6], 0);
-	const ms = toNumber(timeList[7], 0) * 1000;
+	const ms = toNumberMs(timeList[7]);
 
 	const isTimeOk = H < 24 && m < 60 && s < 60;
 	if (!isTimeOk) return null;