npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

timexe

v1.0.6

Published

Yet another cron clone – but this one is better :o) - new improved syntax – milliseconds resolution – both for node JS and browser

Downloads

245

Readme

Timexe - A Cron-like Timer and scheduler witn milliseconds resolution

Also works in a browser

License Downloads per month downloads per month Contributions welcome Known Vulnerabilities

Features

  • Milliseconds resolution
  • Improved cron-like syntax
  • Recalculate long running timers, to improve accuracy
  • No dependencies
  • Works both for node JS and browser inclusion
  • Time expressions include ranges, sets, timestamps, weekdays, yeardays and more
  • Battle-tested. Very reliable.

Precission

At present it seems to have an accuracy within 2 ms in node and up to 25 ms i most browsers. It seems that execution is defered somewhat during process load.

Example

To add a timed job every day at noon:

timexe(”* * * 12”, function(){console.log(“hello - it is noon again”)});

The time expression syntax is like cron, but in reverse order: starting with year, month... (where as cron start with minutes, hours...) plus some enhancements.

Time expression Syntax


The basic syntax is a series of fields specifying the time(s):

<year> <month> <day> <hour> <minute> <second> <millisecond> <microsecond> ...

or a time stamp.

Each field contain wild-cards, ranges, sets, not flags and every flags. Plus some special flags for year days and week days.

The epoch timestamp is seconds since 1970-01-01 UTC with fractions of second as decimal part:

@<epoch>[.<faction of second>]
Field syntax: [!][-]<value>[-<value>]|[,<value>] | /<value> | *
space : field separator
*     : all values. Flags will be ignored.
!     : not
/     : every (can not be combined with ! and range)
-     : Negative values are counted back from the maximum value
a-b   : range. both a and b included.
a,b   : set of values

Day field can have the one of the following flags as well
y: day of year
w: day of week 1-7  (1 is Monday)

Unspecified minor fields are assumed to have the lowest possible value

Note:

  • Time expression are in local time where as time stamps are in UTC
  • Month and weekday use another offset then the javascript Date function:
  • Month 1 is January
  • Week day 1-7 starting with Monday

Examples og timer expressions:

| Time | Time expression | | --- |:---| | Every hour | * * * * | | Every day at noon | * * * 12 | Every 3th Hour on work days | * * w1-5 /3 | Once at a specific epoch time |@1422821601.123 | Once at a specific time | 2014 5 13 18 53 7 300 230 | 2th to last day of the month at noon | * * -2 12 | 3th last day of the year | * * y-3 | 3 times an hour during work time | * * w1-5 9-17 0,20,40 | Every morning at 7:30 but not on weekends | * * !6-7 7 30 | Every 10 minutes in the day time | * * * 8-18 /10

API


timexe(timeExpression, callBack [,parameterToCallBack])

Returns a result object:

{
  result: “ok” or null
  error:  A failure explanation or null
  id:	  integer used to identify the timer
}
timexe.remove(id)

where id is the value returned from timexe

Returns a result object:

{
  result: “ok” or null
  error:  A failure explanation or null
}
timexe.get([id])

where the optional id is the value returned from timexe

Returnes either a timexe timer object if id is given, or an array of all active timer objects.

Settings

timexe.timeResolution (integer)

This is the minimum time resolution for an expression. Minimum value is 1 ms. default is 2 ms. This should be more the the execution time and delays do to load, of the intepreter.

timexe.maxTimerDelay (integer)

Maximum run time of a setTimeout call. Some javascripts engines cant handle more then 32 bit = 0x7FFFFFF. thats about 28 days. default is 86400000 = 1 day. When this time have elapsed, the time expression are reevaluated.

With node JS


Install

$ npm install timexe

Use

var timexe = require('timexe');

// Add
var res1=timexe(”* * * 12”, function(){console.log(“hello wolrd”)});

// Remove
var res2=timexe.remove(res1.id);

With HTML & javascript


Install

Copy files to folder.

Use

<script type="text/JavaScript" src="timexe.js"></script>
<script>
// Add
var res1=timexe(”* * * 12”, function(){alert(“hello wolrd”)});

// Remove
var res2=timexe.remove(res1.id);
</script>

Change log

1.0.5 Added types for typescript

1.0.3 Bugfix: mismatched ID

1.0.2 Temp bugfix of mismatched ID.

1.0.1 Documentation

1.0.0 Fixed test cases:

"Cascading carry" failed

"Only Wildcards = every hour" failed

Documentation

0.9.19 Bug fix. failed when "processs" undefined

0.9.18 Documentation update.

0.9.14 A quick code review. No bugs repported for 2 years.

0.9.13 Minor changes to timex.js

0.9.12 Minor changes to comments and reamne.md

0.9.11 Minor changes to comments and reamne.md

0.9.10 Adapted example to runkit

0.9.9 Minor bugfix. timexe.list made into a regular array.

Help

Please don't hesitate to submit an issue on github! It's the only way to make it better.

But please be prepared to present a test case.

Contributions of almost any kind are welcome.