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79 lines
2.9 KiB
Markdown
79 lines
2.9 KiB
Markdown
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# fsevents [](https://nodei.co/npm/fsevents/)
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Native access to OS X FSEvents in [Node.js](http://nodejs.org/)
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The FSEvents API in OS X allows applications to register for notifications of
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changes to a given directory tree. It is a very fast and lightweight alternative
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to kqueue.
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This is a low-level library. For a cross-compatible file watching module that
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uses fsevents, check out [Chokidar](https://www.npmjs.com/package/chokidar).
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* [Module Site & GitHub](https://github.com/strongloop/fsevents)
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* [NPM Page](https://npmjs.org/package/fsevents)
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## Installation
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$ npm install fsevents
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## Usage
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```js
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var fsevents = require('fsevents');
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var watcher = fsevents(__dirname);
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watcher.on('fsevent', function(path, flags, id) { }); // RAW Event as emitted by OS-X
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watcher.on('change', function(path, info) { }); // Common Event for all changes
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watcher.start() // To start observation
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watcher.stop() // To end observation
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```
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### Events
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* *fsevent* - RAW Event as emitted by OS-X
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* *change* - Common Event for all changes
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* *created* - A File-System-Item has been created
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* *deleted* - A File-System-Item has been deleted
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* *modified* - A File-System-Item has been modified
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* *moved-out* - A File-System-Item has been moved away from this location
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* *moved-in* - A File-System-Item has been moved into this location
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All events except *fsevent* take an *info* object as the second parameter of the callback. The structure of this object is:
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```js
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{
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"event": "<event-type>",
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"id": <eventi-id>,
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"path": "<path-that-this-is-about>",
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"type": "<file|directory|symlink>",
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"changes": {
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"inode": true, // Has the iNode Meta-Information changed
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"finder": false, // Has the Finder Meta-Data changed
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"access": false, // Have the access permissions changed
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"xattrs": false // Have the xAttributes changed
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},
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"flags": <raw-flags>
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}
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```
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## MIT License
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Copyright (C) 2010-2014 Philipp Dunkel
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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