⚡️ Fast parsing, formatting and timezone manipulations for dates
npm install cctzCCTZ is a C++ library for translating between absolute and civil times using the rules of a time zone.
You will need C++11 compatible compiler to build this binding. For most systems this will work:
``
$ npm install --save cctz
If you have Ubuntu 12.04, then install clang-3.4 and set-up environment:
`
$ sudo apt-get install clang-3.4
$ export CXX=clang++
$ export npm_config_clang=1
`js
const {convert, format, CivilTime} = require('cctz');
const unix = convert(new CivilTime(2015, 9, 22, 9), 'America/Los_Angeles');
console.log(format('Talk starts at %T %z (%Z)', unix, 'America/New_York'));
// => Talk starts at 12:00:00 -0400 (EDT)
`
Converts CivilTime to unix timestamp and vice versa.
##### time
Type: CivilTime or number
If time is CivilTime, then method returns Unix timestamp (without fractional part).CivilTime
Otherwise returns .
##### timezone
Type: TimeZone or string
TimeZone objcet, that represents target timezone for converting.
Returns formatted unix timestamp according to timezone.
##### format
Type: string
Format of output. See strftime documentation and Google CCTZ sources for syntax.
##### unix
Type: number
Unix timestamp in seconds (can have fractional part).
##### timezone
Type: TimeZone or string
Default: local timezone
TimeZone objcet, that represents target timezone for formatting.
Parses input string according to format string (assuming input in timezone).
Returns unix timestamp or undefined if parsing failed.
##### format
Type: string
Format of input argument. See strftime documentation and Google CCTZ sources for syntax.
##### input
Type: string
Input string to parse.
##### timezone
Type: TimeZone or string
Default: Timezone from or local timezone
Timezone, that should be used in parse. Timezone can be part of input:
`js`
cctz.parse('%Y-%m-%d %H:%M:%S %Ez', '2015-09-22 09:35:12+03:00');
> Alias for cctz.load_time_zone
Use this method instead new TimeZone – because it caches TimeZone objects inside.
Returns TimeZone object.
##### name
Type: string
Timezone name, that should be loaded from /usr/share/zoneinfo.
> Alias for Math.floor(Date.now() / 1000)
Returns unix timestamp in seconds. All methods can accept timestamp with fractional milliseconds (if you need such accuracy).
Holder for cctz::civil_second with getters and setters for properties.
#### CivilTime(year = 1970, month = 1, day = 1, hour = 0, minute = 0, second = 0)
Creates CivilTime object with next properties:
- year – getter and settermonth
- – getter and setter [1:12]day
- – getter and setter [1:31]hour
- – getter and setter [0:23]minute
- – getter and setter [0:59]second
- – getter and setter [0:59]yearday
- – only getter [1:356]weekday
- – only getter [0:6]
> __Tip:__ Fastest way to add amount of time is to add number of seconds to unix timestamp.
##### CivilTime.startOfYear()
Returns new CivilTime object with start of year.
##### CivilTime.startOfMonth()
Returns new CivilTime object with start of month.
##### CivilTime.startOfDay()
Returns new CivilTime object with start of day.
##### CivilTime.startOfHour()
Returns new CivilTime object with start of hour.
##### CivilTime.clone()
Returns cloned CivilTime object.
Holder for cctz::time_zone.
#### TimeZone(name)
Creates __new__ object with TimeZone.
##### TimeZone.lookup(unix)
Returns cctz::absolute_lookup object.
##### TimeZone.lookup(civiltime)
Returns cctz::civil_lookup object.
##### TimeZone.name
Name of TimeZone.
`
Format (cctz) x 532,683 ops/sec ±2.80% (78 runs sampled)
(Date) x 191,400 ops/sec ±2.59% (81 runs sampled)
(date-fns) x 91,772 ops/sec ±1.58% (85 runs sampled)
(moment) x 56,508 ops/sec ±6.35% (76 runs sampled)
Parse (cctz) x 1,105,353 ops/sec ±0.59% (86 runs sampled)
(Date) x 1,200,218 ops/sec ±2.00% (82 runs sampled)
(date-fns) x 249,225 ops/sec ±5.00% (77 runs sampled)
(moment) x 23,905 ops/sec ±1.91% (80 runs sampled)
Add hour (cctz) x 6,123,083 ops/sec ±5.39% (82 runs sampled)
(Date) x 3,604,915 ops/sec ±1.13% (69 runs sampled)
(date-fns) x 3,211,900 ops/sec ±2.28% (81 runs sampled)
(moment) x 590,854 ops/sec ±8.48% (72 runs sampled)
Convert Ut->Time (cctz) x 653,305 ops/sec ±9.33% (68 runs sampled)
(moment) x 144,580 ops/sec ±2.18% (83 runs sampled)
Convert Time->Ut (cctz) x 987,437 ops/sec ±11.68% (70 runs sampled)
(moment) x 154,492 ops/sec ±3.54% (82 runs sampled)
`
Run npm i and then npm run bench`.
MIT © Vsevolod Strukchinsky