You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.9 KiB
82 lines
2.9 KiB
1 year ago
|
<p align="center">
|
||
|
|
<a href="http://gulpjs.com">
|
||
|
|
<img height="257" width="114" src="https://raw.githubusercontent.com/gulpjs/artwork/master/gulp-2x.png">
|
||
|
|
</a>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
# last-run
|
||
|
|
|
||
|
|
[![NPM version][npm-image]][npm-url] [![Downloads][downloads-image]][npm-url] [![Build Status][travis-image]][travis-url] [![AppVeyor Build Status][appveyor-image]][appveyor-url] [![Coveralls Status][coveralls-image]][coveralls-url] [![Gitter chat][gitter-image]][gitter-url]
|
||
|
|
|
||
|
|
Capture and retrieve the last time a function was run.
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
```js
|
||
|
|
var lastRun = require('last-run');
|
||
|
|
|
||
|
|
function myFunc(){}
|
||
|
|
|
||
|
|
myFunc();
|
||
|
|
// capture the run after (or before) calling the function
|
||
|
|
lastRun.capture(myFunc);
|
||
|
|
|
||
|
|
// retrieve the last run time
|
||
|
|
lastRun(myFunc);
|
||
|
|
//-> outputs the Date.now() when capture was called
|
||
|
|
```
|
||
|
|
|
||
|
|
## API
|
||
|
|
|
||
|
|
__Note: this module uses a WeakMap shim, and throws on non-extensible functions on platforms that
|
||
|
|
don't have a native WeakMap implementation__
|
||
|
|
|
||
|
|
### lastRun(fn, [timeResolution]) => [Timestamp]
|
||
|
|
|
||
|
|
Takes a function (`fn`) and returns a timestamp of the last time the function was captured.
|
||
|
|
|
||
|
|
Returns undefined if the function has not been captured.
|
||
|
|
|
||
|
|
The timestamp is always given in millisecond but the time resolution can be reduced (rounded down).
|
||
|
|
The use case is to be able to compare a build time to a file time attribute.
|
||
|
|
On node v0.10 or with file system like HFS or FAT, `fs.stat` time attributes like `mtime` precision is one second.
|
||
|
|
|
||
|
|
Assuming `lastRun(fn)` returns 1426000001111, `lastRun(fn, 1000)` returns 1426000001000.
|
||
|
|
|
||
|
|
The default time resolution is 1000 on node v0.10, 0 on node 0.11+ and iojs.
|
||
|
|
More information at [`default-resolution`][default-resolution] and
|
||
|
|
[undertaker PR #17][undertaker-17].
|
||
|
|
|
||
|
|
### lastRun.capture(fn, [timestamp])
|
||
|
|
|
||
|
|
Takes a function (`fn`) and captures the current timestamp with `Date.now()`.
|
||
|
|
If passed the optional timestamp, captures that time instead of `Date.now()`.
|
||
|
|
The captured timestamp can then be retrieved using the `lastRun` function.
|
||
|
|
|
||
|
|
### lastRun.release(fn)
|
||
|
|
|
||
|
|
Takes a function (`fn`) and removes the last run timestamp for it.
|
||
|
|
|
||
|
|
## License
|
||
|
|
|
||
|
|
MIT
|
||
|
|
|
||
|
|
[default-resolution]: https://github.com/gulpjs/default-resolution
|
||
|
|
[undertaker-17]: https://github.com/gulpjs/undertaker/pull/17#issuecomment-82374512
|
||
|
|
|
||
|
|
[downloads-image]: http://img.shields.io/npm/dm/last-run.svg
|
||
|
|
[npm-url]: https://www.npmjs.com/package/last-run
|
||
|
|
[npm-image]: http://img.shields.io/npm/v/last-run.svg
|
||
|
|
|
||
|
|
[travis-url]: https://travis-ci.org/gulpjs/last-run
|
||
|
|
[travis-image]: http://img.shields.io/travis/gulpjs/last-run.svg?label=travis-ci
|
||
|
|
|
||
|
|
[appveyor-url]: https://ci.appveyor.com/project/gulpjs/last-run
|
||
|
|
[appveyor-image]: https://img.shields.io/appveyor/ci/gulpjs/last-run.svg?label=appveyor
|
||
|
|
|
||
|
|
[coveralls-url]: https://coveralls.io/r/gulpjs/last-run
|
||
|
|
[coveralls-image]: http://img.shields.io/coveralls/gulpjs/last-run/master.svg
|
||
|
|
|
||
|
|
[gitter-url]: https://gitter.im/gulpjs/gulp
|
||
|
|
[gitter-image]: https://badges.gitter.im/gulpjs/gulp.svg
|