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134
README.md
134
README.md
@ -5,40 +5,55 @@ in ~100 LoC. For Node.js & Browsers.
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[](https://therootcompany.github.io/tz.js/)
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XTZ is a poor man's `Temporal` polyfill, but just for time zones. \
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XTZ is a poor man's Temporal polyfill, but just for time zones. \
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Demo: <https://therootcompany.github.io/tz.js/>
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```js
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// What's the current time, in ISO+Offset format?
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TZ.toLocalISOString(new Date()); // "2021-11-07T03:15:59.000-0500"
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TZ.timeZone(); // "America/New_York"
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```
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> What UTC time will it be when it's 3:15am in New York?
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```js
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// What will the ISO+Offset datetime string be
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// when it's 3:15am in New York?
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//
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// (Relative New York time to Absolute ISO+Offset Time)
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TZ.toOffsetISOString("2021-11-07 03:15:59.000", "America/New_York");
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// Relative New York time to Absolute UTC Time
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TZ.toUTCISOString("2021-11-07 03:15:59.000", "America/New_York");
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// "2021-11-07T03:15:59.000-0500"
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```
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```js
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// What time will it be in New York
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// when it's 7:15am UTC?
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//
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// (Absolute UTC Zulu time to Relative New York time)
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var tzDate = TZ.toUTC("2021-11-07 03:15:59.000", "America/New_York");
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// {
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// year: 2021, month: 11, day: 7,
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// hour: 3, minute: 15, second: 59, millisecond: 0,
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// offset: -300, timeZoneName: "Eastern Standard Time"
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// }
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tzDate.toISOString();
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// "2021-11-07T03:15:59.000-0500"
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// (same as "2021-11-07T08:15:59.000Z")
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```
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> What time will it be in New York when it's 7:15am UTC?
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```js
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// Absolute UTC time to Relative New York time
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TZ.toTimeZoneISOString("2021-03-14T07:15:59.000Z", "America/New_York");
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// "2021-03-14T03:15:59.000-0400"
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```
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```js
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var utcDate = TZ.toTimeZone("2021-03-14T07:15:59.000Z", "America/New_York");
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// {
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// year: 2021, month: 3, day: 14,
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// hour: 3, minute: 15, second: 59, millisecond: 0,
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// offset: -240, timeZoneName: "Eastern Daylight Time"
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// }
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utcDate.toISOString();
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// "2021-03-14T03:15:59.000-0400"
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// (same as "2021-11-07T07:15:59.000Z")
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```
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# Features
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- [x] Translate a UTC Zulu time to a Time Zone
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- [x] Translate a Zoned time to ISO+Offset
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- [x] Translate a UTC time to a Time Zone
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- [x] Translate a Zoned time to UTC
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- [x] Handles **Daylight Savings**, Weird Time Zones, etc...
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- [x] Well-tested `npm run test`
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- [x] Lightweight (No deps)
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@ -72,60 +87,37 @@ var TZ = require("xtz");
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See <https://therootcompany.github.io/tz.js/>.
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## How was this built?
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I live-streamed the creation of this entire project.
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If you'd like to learn how I did it and what challenges I encountered, you can watch here:
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https://www.youtube.com/playlist?list=PLxki0D-ilnqa6horOJ2G18WMZlJeQFlAt
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(though there have been a few minor updates and bug fixes off-camera)
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# API
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- `toLocalISOString(dateOrNull)`
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- `toTimeZone(utcDate, timeZone)`
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- `toTimeZoneISOString(isoString, timeZone)`
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- `fromTimeZone(dtString, timeZone)`
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- `toOffsetISOString(dtString, timeZone)`
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- `toUTC(dtString, timeZone)`
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- `toUTCISOString(dtString, timeZone)`
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## `toTimeZone(utcDate, timeZone)`
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> Convert UTC into a Target Time Zone
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Use ISO timestamps representing the absolute UTC time (ISO with or without offset):
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Use ISO timestamps representing the absolute UTC time in the target time zone:
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```txt
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"2021-11-07T08:15:59.000Z"
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```
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```js
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var utcDate = TZ.toTimeZone("2021-03-14T07:15:59.000Z", "America/New_York");
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// {
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// year: 2021, month: 2, day: 14,
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// hour: 3, minute: 15, second: 59, millisecond: 0,
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// offset: -240, timeZoneName: "Eastern Daylight Time"
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// }
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utcDate.toISOString();
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// "2021-03-14T03:15:59.000-0400"
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// (same as "2021-11-07T07:15:59.000Z")
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```
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### Convert directly to an ISO String:
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Convert directly to an ISO String:
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```js
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TZ.toTimeZoneISOString("2021-11-07T08:15:59.000Z", "America/New_York");
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// "2021-11-07T03:15:59.000-0500"
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```
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### Or use our bespoke (custom) date object:
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Or use our bespoke (custom) date object:
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```js
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var tzDate = TZ.toTimeZone("2021-11-07T08:15:59.000Z", "America/New_York");
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```
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### You can also use a date object with an absolute ISO time:
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You can also use a date object with an absolute UTC time:
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```js
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var tzDate = TZ.toTimeZone(
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@ -139,16 +131,16 @@ console.log(tzDate.toISOString());
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// "2021-11-07T03:15:59.000-0500"
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```
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### Our ISO Strings + Offsets work with JavaScript's native Date object!!
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Our ISO Strings + Offsets work with JavaScript's native Date object!!
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```js
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new Date("2021-11-07T03:15:59.000-0500").toISOString());
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// "2021-11-07T08:15:59.000Z"
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```
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## `fromTimeZone(dtString, timeZone)`
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## `toUTC(dtString, timeZone)`
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> Convert a Target Time Zone into ISO
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> Convert a Target Time Zone into UTC
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Use ISO-like timestamps representing the _local_ time in the target time zone:
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@ -156,39 +148,24 @@ Use ISO-like timestamps representing the _local_ time in the target time zone:
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"2021-11-0 03:15:59.000"
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```
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```js
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var tzDate = TZ.fromTimeZone("2021-11-07 03:15:59.000", "America/New_York");
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// {
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// year: 2021, month: 10, day: 7,
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// hour: 3, minute: 15, second: 59, millisecond: 0,
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// offset: -300, timeZoneName: "Eastern Standard Time"
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// }
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tzDate.toISOString();
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// "2021-11-07T03:15:59.000-0500"
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// (same as "2021-11-07T08:15:59.000Z")
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```
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### Convert directly to an offset ISO String:
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Convert directly to an offset ISO String:
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```js
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TZ.toOffsetISOString("2021-11-07 03:15:59.000", "America/New_York");
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TZ.toUTCISOString("2021-11-07 03:15:59.000", "America/New_York");
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// "2021-11-07T03:15:59.000-0500"
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```
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### Or our bespoke date object:
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Or our bespoke date object:
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```js
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var utcDate = TZ.fromTimeZone("2021-11-07 03:15:59.000", "America/New_York");
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var utcDate = TZ.toUTC("2021-11-07 03:15:59.000", "America/New_York");
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```
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### Use a Date as a source time
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You can also use a date object as the source time, but the date's UTC time will be treated as **_relative to time
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zone_** rather than absolute (this is a workaround for JavaScript's lack of bi-directional timezone support).
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```js
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var utcDate = TZ.fromTimeZone(
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var utcDate = TZ.toUTC(
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new Date("2021-11-07T03:15:59.000Z"),
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"America/New_York"
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);
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@ -203,8 +180,8 @@ utcDate.toISOString();
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> In 2021 Daylight Savings (in the US)
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>
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> - begins at 2am on March 14th (skips to 3am)
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> - ends at 2am on November 7th (resets to 1am)
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> - begins at 2am on March 14th
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> - ends at 2am on November 7th
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>
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> See <https://www.timeanddate.com/time/change/usa>.
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@ -213,21 +190,21 @@ Q: What happens in March when 2am is skipped?
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- A: Although 2am is not a valid time, rather than throwing an error this library will resolve to 1am instead, which
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is an hour early in real ("tick-tock" or "monotonic") time.
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```js
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var utcDate = TZ.fromTimeZone("2021-03-14 02:15:59.000", "America/New_York");
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var utcDate = TZ.toUTC("2021-03-14 02:15:59.000", "America/New_York");
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utcDate.toISOString();
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// "2021-03-14T02:15:59.000-0400"
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// (same as "2021-03-14T01:15:59.000-0500")
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```
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Q: What happens in November when 1am happens twice?
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Q: What happens in November when 2am happens twice?
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- A: Although both 1ams are distinguishable with ISO offset times, only the first can be resolved from a local time
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- A: Although both 2ams are distinguishable with ISO offset times, only the first can be resolved from a local time
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with this library.
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```js
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var utcDate = TZ.fromTimeZone("2021-11-07 01:15:59.000", "America/New_York");
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var utcDate = TZ.toUTC("2021-11-07 01:15:59.000", "America/New_York");
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utcDate.toISOString();
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// "2021-11-07T01:15:59.000-0400", same as "2021-11-07T05:15:59.000Z"
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// (an hour before the 2nd 1am at "2021-11-07T01:15:59.000-0500")
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// (an hour before the 2nd 2am at "2021-11-07T01:15:59.000-0500")
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```
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# List of Time Zones
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@ -241,7 +218,6 @@ America/New_York -0500
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America/Denver -0700
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America/Phoenix -0700 (No DST)
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America/Los_Angeles -0800
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UTC Z
|
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Australia/Adelaide +0930 (30-min, has DST)
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Asia/Kathmandu +0545 (No DST, 45-min)
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Asia/Kolkata +0530 (No DST, 30-min)
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12
examples.js
12
examples.js
@ -22,9 +22,9 @@ var XTZ;
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console.info();
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console.info("\t// during daylight savings");
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console.info(`\tXTZ.fromTimeZone("2021-03-14 08:15:59.000", "America/New_York")`);
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console.info(`\tXTZ.toUTC("2021-03-14 08:15:59.000", "America/New_York")`);
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console.info(`\ttzDate.toISOString()`);
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tzDate = XTZ.fromTimeZone("2021-03-14 08:15:59.000", "America/New_York");
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tzDate = XTZ.toUTC("2021-03-14 08:15:59.000", "America/New_York");
|
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console.info(
|
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"\t" + tzDate.toISOString(),
|
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"// same as",
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@ -33,9 +33,9 @@ var XTZ;
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console.info();
|
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|
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console.info("\t// during standard time");
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console.info(`\tXTZ.fromTimeZone("2021-11-07 08:15:59.000", "America/New_York")`);
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console.info(`\tXTZ.toUTC("2021-11-07 08:15:59.000", "America/New_York")`);
|
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console.info(`\ttzDate.toISOString()`);
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tzDate = XTZ.fromTimeZone("2021-11-07 08:15:59.000", "America/New_York");
|
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tzDate = XTZ.toUTC("2021-11-07 08:15:59.000", "America/New_York");
|
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console.info(
|
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"\t" + tzDate.toISOString(),
|
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"// same as",
|
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@ -65,9 +65,9 @@ var XTZ;
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console.info();
|
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|
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console.info("\t// during standard time");
|
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console.info(`\tXTZ.fromTimeZone("2021-11-07T08:15:59.000Z", "America/New_York")`);
|
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console.info(`\tXTZ.toUTC("2021-11-07T08:15:59.000Z", "America/New_York")`);
|
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console.info(`\ttzDate.toISOString()`);
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tzDate = XTZ.fromTimeZone("2021-11-07T08:15:59.000Z", "America/New_York");
|
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tzDate = XTZ.toUTC("2021-11-07T08:15:59.000Z", "America/New_York");
|
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console.info(
|
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"\t" + tzDate.toISOString(),
|
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"// same as",
|
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|
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125
index.html
125
index.html
@ -27,82 +27,15 @@
|
||||
</h1>
|
||||
|
||||
<h3>
|
||||
Current Time:
|
||||
<br />
|
||||
<span class="js-my-dt">YYYY-MM-DDThh:mm:ss.mmm+0000</span>
|
||||
Current Time: <span class="js-my-dt">YYYY-MM-DDThh:mm:ss.mmm+0000</span>
|
||||
</h3>
|
||||
<pre><code>new Intl.DateTimeFormat().resolvedOptions().timeZone;</code></pre>
|
||||
Current Time Zone: <span class="js-my-tz">America/XXXX</span>
|
||||
<br />
|
||||
<pre><code>String(((new Date()).getTimezoneOffset() / 60)).padStart(2, '0') +
|
||||
String(((new Date()).getTimezoneOffset() % 60)).padStart(2, '0')</code></pre>
|
||||
Current Time Offset: <span class="js-my-offset">-0000</span>
|
||||
<hr />
|
||||
|
||||
<form class="js-tz2tz">
|
||||
<h3>Convert Between Time Zones:</h3>
|
||||
<label>
|
||||
Time:
|
||||
<input
|
||||
class="js-dt-xtz"
|
||||
type="text"
|
||||
placeholder="ex: 2021-03-14 03:15:69.000"
|
||||
required
|
||||
/>
|
||||
</label>
|
||||
<br />
|
||||
|
||||
<label>
|
||||
Input Zone:
|
||||
<input
|
||||
class="js-tz1-xtz"
|
||||
type="text"
|
||||
placeholder="ex: UTC or America/New_York"
|
||||
required
|
||||
/>
|
||||
</label>
|
||||
<br />
|
||||
|
||||
<label>
|
||||
Output Zone:
|
||||
<input
|
||||
class="js-tz2-xtz"
|
||||
type="text"
|
||||
placeholder="ex: America/Los_Angeles or UTC"
|
||||
required
|
||||
/>
|
||||
</label>
|
||||
<br />
|
||||
|
||||
<label>
|
||||
ISO:
|
||||
<input class="js-my-dt-xtz" type="text" disabled />
|
||||
</label>
|
||||
<br />
|
||||
<br />
|
||||
<button type="submit">Convert between Zones!</button>
|
||||
<br />
|
||||
</form>
|
||||
|
||||
<hr />
|
||||
|
||||
<form class="js-local">
|
||||
<h3>Local ISO+Offset String:</h3>
|
||||
<pre><code>XTZ.toLocalISOString(new Date())</code></pre>
|
||||
<label>
|
||||
ISO:
|
||||
<input class="js-my-dt-local" type="text" disabled />
|
||||
</label>
|
||||
<br />
|
||||
</form>
|
||||
|
||||
<hr />
|
||||
|
||||
<form class="js-tz2utc">
|
||||
<h3>TimeZone-Relative (Local) to Absolute (ISO+Offset) String:</h3>
|
||||
<pre><code>XTZ.fromTimeZone("<span class="js-dtx-tz">YYYY-03-14 03:15:69.000</span>", "<span class="js-tzx-tz">UTC</span>")
|
||||
.toISOString()
|
||||
// <span class="js-myx-dt-tz"></span></code></pre>
|
||||
<h3>Relative TimeZone to Absolute UTC:</h3>
|
||||
<label>
|
||||
Time:
|
||||
<input
|
||||
@ -115,7 +48,7 @@ String(((new Date()).getTimezoneOffset() % 60)).padStart(2, '0')</code></pre>
|
||||
<br />
|
||||
|
||||
<label>
|
||||
Input Zone:
|
||||
Zone:
|
||||
<input
|
||||
class="js-tz-tz"
|
||||
type="text"
|
||||
@ -130,17 +63,14 @@ String(((new Date()).getTimezoneOffset() % 60)).padStart(2, '0')</code></pre>
|
||||
</label>
|
||||
<br />
|
||||
<br />
|
||||
<button type="submit">Convert to ISO+Offset!</button>
|
||||
<button type="submit">Convert to UTC!</button>
|
||||
<br />
|
||||
</form>
|
||||
|
||||
<hr />
|
||||
|
||||
<form class="js-utc2tz">
|
||||
<h3>Absolute (UTC) to TimeZone-Relative (ISO+Offset) String:</h3>
|
||||
<pre><code>XTZ.toTimeZone("<span class="js-dtx-utc">YYYY-03-14 03:15:69.000</span>", "<span class="js-tzx-utc">UTC</span>")
|
||||
.toISOString()
|
||||
// <span class="js-myx-dt-utc"></span></code></pre>
|
||||
<h3>Absolute UTC to Relative TimeZone</h3>
|
||||
<label>
|
||||
Time:
|
||||
<input
|
||||
@ -152,7 +82,7 @@ String(((new Date()).getTimezoneOffset() % 60)).padStart(2, '0')</code></pre>
|
||||
</label>
|
||||
<br />
|
||||
<label>
|
||||
Output Zone:
|
||||
Zone:
|
||||
<input
|
||||
class="js-tz-utc"
|
||||
type="text"
|
||||
@ -183,7 +113,6 @@ America/New_York -0500 -0400 (Eastern Time)
|
||||
America/Denver -0700 -0600 (Mountain Time)
|
||||
America/Phoenix -0700 (No DST) (Arizona Time)
|
||||
America/Los_Angeles -0800 -0700 (Pacific Time)
|
||||
UTC Z (UTC "Zulu" Time)
|
||||
Australia/Adelaide +0930 +1030 (30-min)
|
||||
Asia/Kathmandu +0545 (No DST) (45-min)
|
||||
Asia/Kolkata +0530 (No DST) (30-min)</pre
|
||||
@ -194,59 +123,29 @@ Asia/Kolkata +0530 (No DST) (30-min)</pre
|
||||
>github.com/therootcompany/tz.js</a
|
||||
>
|
||||
<script src="./xtz.js"></script>
|
||||
<script src="./tolocalisostring.js"></script>
|
||||
<script>
|
||||
function $(sel, el) {
|
||||
return (el || document.body).querySelector(sel);
|
||||
}
|
||||
|
||||
function translate(dt, tz, tz2) {
|
||||
var utc = new Date(XTZ.fromTimeZone(dt, tz).toISOString());
|
||||
if (!tz2) {
|
||||
return utc;
|
||||
}
|
||||
return XTZ.toTimeZone(utc, tz2);
|
||||
}
|
||||
|
||||
function fromTimeZone() {
|
||||
function toUTC() {
|
||||
var curDt = $(".js-dt-tz").value;
|
||||
var curTz = $(".js-tz-tz").value;
|
||||
$(".js-my-dt-tz").value = XTZ.fromTimeZone(curDt, curTz).toISOString();
|
||||
|
||||
$(".js-dtx-tz").innerText = curDt;
|
||||
$(".js-tzx-tz").innerText = curTz;
|
||||
$(".js-myx-dt-tz").innerText = $(".js-my-dt-tz").value;
|
||||
$(".js-my-dt-tz").value = XTZ.toUTC(curDt, curTz).toISOString();
|
||||
}
|
||||
|
||||
function toTZ() {
|
||||
var curDt = $(".js-dt-utc").value;
|
||||
var curTz = $(".js-tz-utc").value;
|
||||
$(".js-my-dt-utc").value = XTZ.toTimeZone(curDt, curTz).toISOString();
|
||||
|
||||
$(".js-dtx-utc").innerText = curDt;
|
||||
$(".js-tzx-utc").innerText = curTz;
|
||||
$(".js-myx-dt-utc").innerText = $(".js-my-dt-utc").value;
|
||||
}
|
||||
|
||||
function xTZ() {
|
||||
var curDt = $(".js-dt-xtz").value;
|
||||
var inTz = $(".js-tz1-xtz").value;
|
||||
var outTz = $(".js-tz2-xtz").value;
|
||||
$(".js-my-dt-xtz").value = translate(curDt, inTz, outTz).toISOString();
|
||||
}
|
||||
|
||||
$(".js-my-dt-local").value = XTZ.toLocalISOString();
|
||||
|
||||
var myTz = new Intl.DateTimeFormat("default", {}).resolvedOptions()
|
||||
.timeZone;
|
||||
$(".js-my-tz").innerText = myTz;
|
||||
$(".js-tz-tz").value = myTz;
|
||||
$(".js-tz-utc").value = myTz;
|
||||
$(".js-tz1-xtz").value = myTz;
|
||||
$(".js-tz2-xtz").value = "Asia/Kathmandu";
|
||||
var myOffset = -1 * new Date().getTimezoneOffset();
|
||||
$(".js-my-offset").innerText =
|
||||
XTZ.formatOffset(myOffset) + " (" + myOffset + ")";
|
||||
$(".js-my-offset").innerText = -1 * new Date().getTimezoneOffset();
|
||||
|
||||
var myDate = new Date();
|
||||
$(".js-my-dt").innerText = XTZ.toTimeZone(myDate, myTz).toISOString();
|
||||
@ -254,7 +153,6 @@ Asia/Kolkata +0530 (No DST) (30-min)</pre
|
||||
.toISOString()
|
||||
.replace("T", " ")
|
||||
.replace(/(Z|(\+|-)\d+)$/, "");
|
||||
$(".js-dt-xtz").value = $(".js-dt-tz").value;
|
||||
$(".js-dt-utc").value = myDate.toISOString();
|
||||
|
||||
$("form.js-utc2tz").addEventListener("submit", function (ev) {
|
||||
@ -265,12 +163,11 @@ Asia/Kolkata +0530 (No DST) (30-min)</pre
|
||||
$("form.js-tz2utc").addEventListener("submit", function (ev) {
|
||||
ev.preventDefault();
|
||||
ev.stopPropagation();
|
||||
fromTimeZone();
|
||||
toUTC();
|
||||
});
|
||||
|
||||
fromTimeZone();
|
||||
toUTC();
|
||||
toTZ();
|
||||
xTZ();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
@ -1,15 +1,10 @@
|
||||
{
|
||||
"name": "xtz",
|
||||
"version": "1.3.2",
|
||||
"version": "1.0.1",
|
||||
"description": "A fast, lightweight, zero-dependency library to translate between Time Zones and UTC with native Intl.DateTimeFormat in ~100 LoC. For Node.js & Browsers.",
|
||||
"main": "xtz.js",
|
||||
"files": [
|
||||
"xtz.js",
|
||||
"tolocalisostring.js"
|
||||
],
|
||||
"scripts": {
|
||||
"test": "node ./test.js",
|
||||
"build": "uglifyjs ./xtz.js > ./xtz.min.js ; gzip -k -f ./xtz.min.js"
|
||||
"test": "node ./test.js"
|
||||
},
|
||||
"repository": {
|
||||
"type": "git",
|
||||
|
||||
74
test.js
74
test.js
@ -4,10 +4,9 @@ var TZ = require("./");
|
||||
|
||||
function testUtcToTz(t) {
|
||||
var result = TZ.toTimeZone.apply(TZ, t.inputs).toISOString();
|
||||
var result2 = TZ.toTimeZoneISOString.apply(TZ, t.inputs);
|
||||
if (result !== result2 || t.result !== result) {
|
||||
if (t.result !== result) {
|
||||
throw new Error(
|
||||
`Invalid UTC/ISO+Offset to TZ conversion for ${t.desc}:\n` +
|
||||
`Invalid UTC to TZ conversion for ${t.desc}:\n` +
|
||||
`\tExpected: ${t.result}\n` +
|
||||
`\tActual: ${result}\n`
|
||||
);
|
||||
@ -15,11 +14,9 @@ function testUtcToTz(t) {
|
||||
}
|
||||
|
||||
function testTzToUtc(t) {
|
||||
var result = TZ.fromTimeZone.apply(TZ, t.inputs).toISOString();
|
||||
var result2 = TZ.toOffsetISOString.apply(TZ, t.inputs);
|
||||
var result3 = TZ.toUTC.apply(TZ, t.inputs).toISOString();
|
||||
if (t.result !== result || t.result !== result2 || t.result !== result3) {
|
||||
console.error(result);
|
||||
var result = TZ.toUTC.apply(TZ, t.inputs);
|
||||
if (t.result !== result.toISOString()) {
|
||||
console.log(result);
|
||||
throw new Error(
|
||||
`Invalid TZ to UTC conversion for ${t.desc}:\n` +
|
||||
`\tExpected: ${t.result}\n` +
|
||||
@ -47,23 +44,23 @@ function testTzToUtc(t) {
|
||||
|
||||
// 12:15am NY -0500 => -0400
|
||||
{
|
||||
desc: "UTC Zulu to 12:15am NY EST",
|
||||
desc: "UTC to 12:15am NY EST",
|
||||
inputs: ["2021-03-14T05:15:59.000Z", "America/New_York"],
|
||||
result: "2021-03-14T00:15:59.000-0500",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 12:15am NY EST (2)",
|
||||
desc: "UTC to 12:15am NY EST (2)",
|
||||
inputs: ["2021-03-14T00:15:59.000-0500", "America/New_York"],
|
||||
result: "2021-03-14T00:15:59.000-0500",
|
||||
},
|
||||
// 1:15am NY (non-DST)
|
||||
{
|
||||
desc: "UTC Zulu to 1:15am NY EST",
|
||||
desc: "UTC to 1:15am NY EST",
|
||||
inputs: ["2021-03-14T06:15:59.000Z", "America/New_York"],
|
||||
result: "2021-03-14T01:15:59.000-0500",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 1:15am NY EST (2)",
|
||||
desc: "UTC to 1:15am NY EST (2)",
|
||||
inputs: ["2021-03-14T01:15:59.000-0500", "America/New_York"],
|
||||
result: "2021-03-14T01:15:59.000-0500",
|
||||
},
|
||||
@ -72,23 +69,23 @@ function testTzToUtc(t) {
|
||||
|
||||
// 3:15am NY (DST)
|
||||
{
|
||||
desc: "UTC Zulu to 3:15am NY EDT",
|
||||
desc: "UTC to 3:15am NY EDT",
|
||||
inputs: ["2021-03-14T07:15:59.000Z", "America/New_York"],
|
||||
result: "2021-03-14T03:15:59.000-0400",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 3:15am NY EDT (2)",
|
||||
desc: "UTC to 3:15am NY EDT (2)",
|
||||
inputs: ["2021-03-14T03:15:59.000-0400", "America/New_York"],
|
||||
result: "2021-03-14T03:15:59.000-0400",
|
||||
},
|
||||
// 4:15am NY
|
||||
{
|
||||
desc: "UTC Zulu to 4:15am NY EDT",
|
||||
desc: "UTC to 4:15am NY EDT",
|
||||
inputs: ["2021-03-14T08:15:59.000Z", "America/New_York"],
|
||||
result: "2021-03-14T04:15:59.000-0400",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 4:15am NY EDT (2)",
|
||||
desc: "UTC to 4:15am NY EDT (2)",
|
||||
inputs: ["2021-03-14T04:15:59.000-0400", "America/New_York"],
|
||||
result: "2021-03-14T04:15:59.000-0400",
|
||||
},
|
||||
@ -109,57 +106,57 @@ function testTzToUtc(t) {
|
||||
|
||||
// 12:15am NY -0400 => -0500
|
||||
{
|
||||
desc: "UTC Zulu to 2021 Nov 7, 12:15am NY EDT",
|
||||
desc: "UTC to 2021 Nov 7, 12:15am NY EDT",
|
||||
inputs: ["2021-11-07T04:15:59.000Z", "America/New_York"],
|
||||
result: "2021-11-07T00:15:59.000-0400",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 2021 Nov 7, 12:15am NY EDT (2)",
|
||||
desc: "UTC to 2021 Nov 7, 12:15am NY EDT (2)",
|
||||
inputs: ["2021-11-07T00:15:59.000-0400", "America/New_York"],
|
||||
result: "2021-11-07T00:15:59.000-0400",
|
||||
},
|
||||
// 1:15am NY (DST) -0400
|
||||
// NOTE: 1:15am happens TWICE (with different offsets)
|
||||
{
|
||||
desc: "UTC Zulu to 2021 Nov 7, 1:15am NY EDT",
|
||||
desc: "UTC to 2021 Nov 7, 1:15am NY EDT",
|
||||
inputs: ["2021-11-07T05:15:59.000Z", "America/New_York"],
|
||||
result: "2021-11-07T01:15:59.000-0400",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 2021 Nov 7, 1:15am NY EDT (2)",
|
||||
desc: "UTC to 2021 Nov 7, 1:15am NY EDT (2)",
|
||||
inputs: ["2021-11-07T01:15:59.000-0400", "America/New_York"],
|
||||
result: "2021-11-07T01:15:59.000-0400",
|
||||
},
|
||||
// 1:15am NY (non-DST) -0500
|
||||
{
|
||||
desc: "UTC Zulu to 2021 Nov 7, 1:15am NY EST",
|
||||
desc: "UTC to 2021 Nov 7, 1:15am NY EST",
|
||||
inputs: ["2021-11-07T06:15:59.000Z", "America/New_York"],
|
||||
result: "2021-11-07T01:15:59.000-0500",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 2021 Nov 7, 1:15am NY EST (2)",
|
||||
desc: "UTC to 2021 Nov 7, 1:15am NY EST (2)",
|
||||
inputs: ["2021-11-07T01:15:59.000-0500", "America/New_York"],
|
||||
result: "2021-11-07T01:15:59.000-0500",
|
||||
},
|
||||
// 2:15am NY -0500
|
||||
{
|
||||
desc: "UTC Zulu to 2021 Nov 7, 2:15am NY EST",
|
||||
desc: "UTC to 2021 Nov 7, 2:15am NY EST",
|
||||
inputs: ["2021-11-07T07:15:59.000Z", "America/New_York"],
|
||||
result: "2021-11-07T02:15:59.000-0500",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 2021 Nov 7, 2:15am NY EST (2)",
|
||||
desc: "UTC to 2021 Nov 7, 2:15am NY EST (2)",
|
||||
inputs: ["2021-11-07T02:15:59.000-0500", "America/New_York"],
|
||||
result: "2021-11-07T02:15:59.000-0500",
|
||||
},
|
||||
// 3:15am NY
|
||||
{
|
||||
desc: "UTC Zulu to 2021 Nov 7, 3:15am NY EST",
|
||||
desc: "UTC to 2021 Nov 7, 3:15am NY EST",
|
||||
inputs: ["2021-11-07T08:15:59.000Z", "America/New_York"],
|
||||
result: "2021-11-07T03:15:59.000-0500",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to 2021 Nov 7, 3:15am NY EST (2)",
|
||||
desc: "UTC to 2021 Nov 7, 3:15am NY EST (2)",
|
||||
inputs: ["2021-11-07T03:15:59.000-0500", "America/New_York"],
|
||||
result: "2021-11-07T03:15:59.000-0500",
|
||||
},
|
||||
@ -170,29 +167,27 @@ function testTzToUtc(t) {
|
||||
|
||||
// Colombo +0530 (not DST)
|
||||
{
|
||||
desc: "UTC Zulu to Asia/Colombo (1)",
|
||||
desc: "UTC to Asia/Colombo (1)",
|
||||
inputs: ["2021-03-14T08:15:59.000Z", "Asia/Colombo"],
|
||||
result: "2021-03-14T13:45:59.000+0530",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to Asia/Colombo (2)",
|
||||
desc: "UTC to Asia/Colombo (2)",
|
||||
inputs: ["2021-03-14T13:45:59.000+0530", "Asia/Colombo"],
|
||||
result: "2021-03-14T13:45:59.000+0530",
|
||||
},
|
||||
{
|
||||
desc: "UTC Zulu to Asia/Colombo (3)",
|
||||
desc: "UTC to Asia/Colombo (3)",
|
||||
inputs: ["2021-11-07T08:15:59.000Z", "Asia/Colombo"],
|
||||
result: "2021-11-07T13:45:59.000+0530",
|
||||
},
|
||||
{
|
||||
desc: "ISO+Offset to Asia/Colombo (4)",
|
||||
desc: "UTC to Asia/Colombo (4)",
|
||||
inputs: ["2021-11-07T13:45:59.000+0530", "Asia/Colombo"],
|
||||
result: "2021-11-07T13:45:59.000+0530",
|
||||
},
|
||||
].forEach(testUtcToTz);
|
||||
console.info(
|
||||
"Pass: UTC/ISO+Offset to TZ for America/New_York and Asia/Colombo"
|
||||
);
|
||||
console.info("Pass: UTC to TZ for America/New_York and Asia/Colombo");
|
||||
|
||||
[
|
||||
//
|
||||
@ -319,16 +314,3 @@ console.info(
|
||||
},
|
||||
].forEach(testTzToUtc);
|
||||
console.info("Pass: TZ to UTC for America/New_York and Asia/Colombo");
|
||||
|
||||
var localISOString = TZ.toLocalISOString();
|
||||
var reISOString = /^\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\d\.\d\d\d[+-]\d\d\d\d$/;
|
||||
if (!reISOString.test(localISOString)) {
|
||||
throw new Error("Couldn't get local time as iso+offset");
|
||||
}
|
||||
console.info("Pass: can get local time as ISO+Offset");
|
||||
|
||||
var tzName = TZ.timeZone();
|
||||
if (!/^[A-Z]\w+\/[A-Z]\w+$/.test(tzName)) {
|
||||
throw new Error("Couldn't get local Time Zone");
|
||||
}
|
||||
console.info("Pass: can get local timezone");
|
||||
|
||||
@ -1,50 +0,0 @@
|
||||
(function (exports) {
|
||||
"use strict";
|
||||
|
||||
// See <https://github.com/coolaj86/AJScript/issues/27>
|
||||
|
||||
function toLocalISOString(dateOrStr) {
|
||||
var d;
|
||||
if (dateOrStr) {
|
||||
d = new Date(dateOrStr);
|
||||
} else {
|
||||
d = new Date();
|
||||
}
|
||||
|
||||
var YYYY = d.getFullYear();
|
||||
var MM = p2(d.getMonth() + 1);
|
||||
var DD = p2(d.getDate());
|
||||
var hh = p2(d.getHours());
|
||||
var mm = p2(d.getMinutes());
|
||||
var ss = p2(d.getSeconds());
|
||||
var sss = d.getMilliseconds().toString().padStart(3, "0");
|
||||
|
||||
var offset = formatOffset(-d.getTimezoneOffset());
|
||||
|
||||
return `${YYYY}-${MM}-${DD}T${hh}:${mm}:${ss}.${sss}${offset}`;
|
||||
}
|
||||
|
||||
function formatOffset(minutes) {
|
||||
if (!minutes) {
|
||||
return "Z";
|
||||
}
|
||||
|
||||
var h = Math.floor(Math.abs(minutes) / 60);
|
||||
var m = Math.abs(minutes) % 60;
|
||||
var offset = "";
|
||||
if (minutes > 0) {
|
||||
offset = "+";
|
||||
} else if (minutes < 0) {
|
||||
offset = "-";
|
||||
}
|
||||
|
||||
// +0500, -0730
|
||||
return offset + p2(h) + p2(m);
|
||||
}
|
||||
|
||||
function p2(x) {
|
||||
return String(x).padStart(2, "0");
|
||||
}
|
||||
|
||||
exports.toLocalISOString = toLocalISOString;
|
||||
})(("undefined" === typeof module && window) || exports);
|
||||
79
xtz.js
79
xtz.js
@ -1,4 +1,6 @@
|
||||
(function (exports) {
|
||||
var XTZ;
|
||||
|
||||
(function () {
|
||||
"use strict";
|
||||
|
||||
function toTimeZone(date, timeZone) {
|
||||
@ -22,8 +24,7 @@
|
||||
var formater = new Intl.DateTimeFormat("default", tzOptions);
|
||||
var parts = formater.formatToParts(date);
|
||||
|
||||
// millisecond is explicitly 0 for iOS' lack of fractionalSecond support
|
||||
var whole = { millisecond: 0 };
|
||||
var whole = {};
|
||||
parts.forEach(function (part) {
|
||||
var val = part.value;
|
||||
switch (part.type) {
|
||||
@ -48,7 +49,7 @@
|
||||
default:
|
||||
val = parseInt(val, 10);
|
||||
}
|
||||
// ex: whole.month = 0;
|
||||
// whole.month = 0;
|
||||
whole[part.type] = val;
|
||||
});
|
||||
|
||||
@ -60,17 +61,16 @@
|
||||
|
||||
function toTimeZoneISOString(date, timeZone) {
|
||||
var whole = toTimeZone(date, timeZone);
|
||||
return formatAsOffsetISOString(whole);
|
||||
return toOffsetISOString(whole);
|
||||
}
|
||||
|
||||
function _toOffsetISOString() {
|
||||
/* jshint validthis: true */
|
||||
return formatAsOffsetISOString(this);
|
||||
return toOffsetISOString(this);
|
||||
}
|
||||
|
||||
function getOffset(utcDate, tzD2) {
|
||||
var tzDate = new Date(formatAsOffsetISOString(tzD2));
|
||||
var diff = Math.round((tzDate.valueOf() - utcDate.valueOf()) / (60 * 1000));
|
||||
var tzDate = new Date(toOffsetISOString(tzD2));
|
||||
var diff = Math.round(tzDate.valueOf() - utcDate.valueOf()) / (60 * 1000);
|
||||
return diff;
|
||||
}
|
||||
|
||||
@ -102,16 +102,7 @@
|
||||
);
|
||||
}
|
||||
|
||||
function toOffsetISOString(date, timeZone) {
|
||||
if ("object" === typeof date && "offset" in date && "year" in date) {
|
||||
return formatAsOffsetISOString(date);
|
||||
}
|
||||
|
||||
var whole = fromTimeZone(date, timeZone);
|
||||
return formatAsOffsetISOString(whole);
|
||||
}
|
||||
|
||||
function formatAsOffsetISOString(d) {
|
||||
function toOffsetISOString(d) {
|
||||
var offset = formatOffset(d.offset);
|
||||
return (
|
||||
`${d.year}-${p2(d.month + 1)}-${p2(d.day)}` +
|
||||
@ -121,7 +112,7 @@
|
||||
);
|
||||
}
|
||||
|
||||
function fromTimeZone(dt, tz) {
|
||||
function toUTC(dt, tz) {
|
||||
if ("string" === typeof dt) {
|
||||
// Either of these formats should work:
|
||||
// 2021-03-14 01:15:59
|
||||
@ -135,7 +126,7 @@
|
||||
var utcDate = new Date(dt);
|
||||
var tzD2 = toTimeZone(utcDate, tz);
|
||||
var offset = tzD2.offset;
|
||||
tzD2.offset = 0;
|
||||
tzD2.offset = "";
|
||||
|
||||
var deltaDate = new Date(utcDate);
|
||||
deltaDate.setUTCMinutes(deltaDate.getUTCMinutes() - offset);
|
||||
@ -158,47 +149,19 @@
|
||||
return tzD3;
|
||||
}
|
||||
|
||||
function toLocalISOString(dateOrStr) {
|
||||
var d;
|
||||
if (dateOrStr) {
|
||||
d = new Date(dateOrStr);
|
||||
} else {
|
||||
d = new Date();
|
||||
}
|
||||
|
||||
var YYYY = d.getFullYear();
|
||||
var MM = p2(d.getMonth() + 1);
|
||||
var DD = p2(d.getDate());
|
||||
var hh = p2(d.getHours());
|
||||
var mm = p2(d.getMinutes());
|
||||
var ss = p2(d.getSeconds());
|
||||
var sss = d.getMilliseconds().toString().padStart(3, "0");
|
||||
|
||||
var offset = formatOffset(-d.getTimezoneOffset());
|
||||
|
||||
return `${YYYY}-${MM}-${DD}T${hh}:${mm}:${ss}.${sss}${offset}`;
|
||||
function toUTCISOString(date, timeZone) {
|
||||
var whole = toUTC(date, timeZone);
|
||||
return toOffsetISOString(whole);
|
||||
}
|
||||
|
||||
function getTimeZone() {
|
||||
return new Intl.DateTimeFormat().resolvedOptions().timeZone;
|
||||
}
|
||||
|
||||
exports.XTZ = {
|
||||
XTZ = {
|
||||
// bespoke date =>
|
||||
// 2021-11-07T3:15:59-0500
|
||||
// (todo?)
|
||||
// xtzToISOString: formatAsOffsetISOString,
|
||||
// (deprecated)
|
||||
toOffsetISOString: toOffsetISOString,
|
||||
|
||||
// -240 => -0400
|
||||
formatOffset: formatOffset,
|
||||
|
||||
// "America/New_York"
|
||||
timeZone: getTimeZone,
|
||||
// "2021-11-07T03:15:59-0500"
|
||||
toLocalISOString: toLocalISOString,
|
||||
|
||||
// [ "2021-11-07T08:15:59Z", "America/New_York" ]
|
||||
// => "2021-11-07T03:15:59-0500" // 2021-11-07 03:15:59
|
||||
toTimeZone: toTimeZone,
|
||||
@ -206,13 +169,11 @@
|
||||
|
||||
// [ "2021-11-07 03:15:59", "America/New_York" ]
|
||||
// => "2021-11-07T03:15:59-0500" // 2021-11-07T08:15:59Z
|
||||
toUTC: fromTimeZone,
|
||||
fromTimeZone: fromTimeZone,
|
||||
// deprecated
|
||||
toUTCISOString: toOffsetISOString,
|
||||
toUTC: toUTC,
|
||||
toUTCISOString: toUTCISOString,
|
||||
};
|
||||
|
||||
if ("undefined" != typeof module && module.exports) {
|
||||
module.exports = exports.XTZ;
|
||||
module.exports = XTZ;
|
||||
}
|
||||
})(("undefined" === typeof module && window) || exports);
|
||||
})();
|
||||
|
||||
2
xtz.min.js
vendored
2
xtz.min.js
vendored
@ -1 +1 @@
|
||||
var XTZ;(function(){"use strict";function toTimeZone(date,timeZone){date=new Date(date);var options={timeZone:timeZone,year:"numeric",month:"numeric",day:"numeric",hour12:false,hour:"numeric",minute:"numeric",second:"numeric",fractionalSecondDigits:3};var tzOptions=Object.assign({timeZoneName:"long"},options);var formater=new Intl.DateTimeFormat("default",tzOptions);var parts=formater.formatToParts(date);var whole={millisecond:0};parts.forEach(function(part){var val=part.value;switch(part.type){case"literal":return;case"timeZoneName":break;case"month":val=parseInt(val,10)-1;break;case"hour":val=parseInt(val,10)%24;break;case"fractionalSecond":whole.millisecond=parseInt(val,10);return;default:val=parseInt(val,10)}whole[part.type]=val});whole.timeZone=timeZone;whole.offset=getOffset(date,whole);whole.toISOString=_toOffsetISOString;return whole}function toTimeZoneISOString(date,timeZone){var whole=toTimeZone(date,timeZone);return toOffsetISOString(whole)}function _toOffsetISOString(){return toOffsetISOString(this)}function getOffset(utcDate,tzD2){var tzDate=new Date(toOffsetISOString(tzD2));var diff=Math.round((tzDate.valueOf()-utcDate.valueOf())/(60*1e3));return diff}function p2(x){return String(x).padStart(2,"0")}function p3(x){return String(x).padStart(3,"0")}function formatOffset(minutes){if(!minutes){return"Z"}var h=Math.floor(Math.abs(minutes)/60);var m=Math.abs(minutes)%60;var offset="";if(minutes>0){offset="+"}else if(minutes<0){offset="-"}return offset+h.toString().padStart(2,"0")+m.toString().padStart(2,"0")}function toOffsetISOString(d){var offset=formatOffset(d.offset);return`${d.year}-${p2(d.month+1)}-${p2(d.day)}`+`T${p2(d.hour)}:${p2(d.minute)}:${p2(d.second)}.${p3(d.millisecond)}${offset}`}function toUTC(dt,tz){if("string"===typeof dt){dt=dt.replace("T"," ").replace("Z","").replace(" ","T").replace(/$/,"Z")}var utcDate=new Date(dt);var tzD2=toTimeZone(utcDate,tz);var offset=tzD2.offset;tzD2.offset=0;var deltaDate=new Date(utcDate);deltaDate.setUTCMinutes(deltaDate.getUTCMinutes()-offset);var tzD3=toTimeZone(deltaDate,tz);if(tzD3.hour===utcDate.getUTCHours()&&tzD3.minute===utcDate.getUTCMinutes()){return tzD3}var diff=tzD3.offset-offset;var h=Math.floor(Math.abs(diff)/60);var m=Math.abs(diff)%60;var sign=Math.abs(diff)/diff;tzD3.hour-=h*sign;tzD3.minute-=m*sign;return tzD3}function toUTCISOString(date,timeZone){var whole=toUTC(date,timeZone);return toOffsetISOString(whole)}XTZ={toOffsetISOString:toOffsetISOString,formatOffset:formatOffset,toTimeZone:toTimeZone,toTimeZoneISOString:toTimeZoneISOString,toUTC:toUTC,toUTCISOString:toUTCISOString};if("undefined"!=typeof module&&module.exports){module.exports=XTZ}})();
|
||||
var XTZ;(function(){"use strict";function toTimeZone(date,timeZone){date=new Date(date);var options={timeZone:timeZone,year:"numeric",month:"numeric",day:"numeric",hour12:false,hour:"numeric",minute:"numeric",second:"numeric",fractionalSecondDigits:3};var tzOptions=Object.assign({timeZoneName:"long"},options);var formater=new Intl.DateTimeFormat("default",tzOptions);var parts=formater.formatToParts(date);var whole={};parts.forEach(function(part){var val=part.value;switch(part.type){case"literal":return;case"timeZoneName":break;case"month":val=parseInt(val,10)-1;break;case"hour":val=parseInt(val,10)%24;break;case"fractionalSecond":whole.millisecond=parseInt(val,10);return;default:val=parseInt(val,10)}whole[part.type]=val});whole.timeZone=timeZone;whole.offset=getOffset(date,whole);whole.toISOString=_toOffsetISOString;return whole}function toTimeZoneISOString(date,timeZone){var whole=toTimeZone(date,timeZone);return toOffsetISOString(whole)}function _toOffsetISOString(){return toOffsetISOString(this)}function getOffset(utcDate,tzD2){var tzDate=new Date(toOffsetISOString(tzD2));var diff=Math.round(tzDate.valueOf()-utcDate.valueOf())/(60*1e3);return diff}function p2(x){return String(x).padStart(2,"0")}function p3(x){return String(x).padStart(3,"0")}function formatOffset(minutes){if(!minutes){return"Z"}var h=Math.floor(Math.abs(minutes)/60);var m=Math.abs(minutes)%60;var offset="";if(minutes>0){offset="+"}else if(minutes<0){offset="-"}return offset+h.toString().padStart(2,"0")+m.toString().padStart(2,"0")}function toOffsetISOString(d){var offset=formatOffset(d.offset);return`${d.year}-${p2(d.month+1)}-${p2(d.day)}`+`T${p2(d.hour)}:${p2(d.minute)}:${p2(d.second)}.${p3(d.millisecond)}${offset}`}function toUTC(dt,tz){if("string"===typeof dt){dt=dt.replace("T"," ").replace("Z","").replace(" ","T").replace(/$/,"Z")}var utcDate=new Date(dt);var tzD2=toTimeZone(utcDate,tz);var offset=tzD2.offset;tzD2.offset="";var deltaDate=new Date(utcDate);deltaDate.setUTCMinutes(deltaDate.getUTCMinutes()-offset);var tzD3=toTimeZone(deltaDate,tz);if(tzD3.hour===utcDate.getUTCHours()&&tzD3.minute===utcDate.getUTCMinutes()){return tzD3}var diff=tzD3.offset-offset;var h=Math.floor(Math.abs(diff)/60);var m=Math.abs(diff)%60;var sign=Math.abs(diff)/diff;tzD3.hour-=h*sign;tzD3.minute-=m*sign;return tzD3}function toUTCISOString(date,timeZone){var whole=toUTC(date,timeZone);return toOffsetISOString(whole)}XTZ={toOffsetISOString:toOffsetISOString,formatOffset:formatOffset,toTimeZone:toTimeZone,toTimeZoneISOString:toTimeZoneISOString,toUTC:toUTC,toUTCISOString:toUTCISOString};if("undefined"!=typeof module&&module.exports){module.exports=XTZ}})();
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user