[](https://travis-ci.org/chrmod/watch-detector)
npm install watch-detectorUtility for selecting the best options for sane:
watcher options:
* watchman: if a valid version of watchman is installed, we will prefer this.
* node: use node's built in watcher, if watchman is not present.
future options:
* fs-events: https://github.com/chrmod/watch-detector/issues/6
``sh`
yarn add watch-detector
`js
const WatchDetector = require('watch-detector');
const sane = require('sane');
let detector = new WatchDetector();
let saneOptions = {
/ sane options /
};
let options = detector.findBestWatcherOption(saneOptions)
/ options's watcher selection will be based on various heuristics /
sane(root, options);
`
`js``
new WatchDetector({
ui: / console-ui instance /,
fs: / fs instance /
});