-`dir` - The directory whose contents to watch. It's recommended, though not required, for this to be an absolute path, say one returned by `path.resolve`.
-`filter({ path, stats })` - _(optional)_ A function to decide whether a given file or directory should be watched. It's passed an object containing the file or directory's relative `path` and its `stats`. It should return `true` or `false` (or a `Promise` resolving to one of those). Returning `false` for a directory means that none of its contents will be watched. You can use `stats.isFile()` and `stats.isDirectory()` to determine whether this is a file or a directory.
-`watch` - _(optional)_ Whether to actually watch the directory for changes. Defaults to `true`. If `false`, you can retrieve all of the files within a given directory along with their `Stats` but changes will not actually be watched.
-`debounce` - _(optional)_ Length of timeout in milliseconds to use to debounce incoming events from `fs.watch`. Defaults to 10. Multiple events are often emitted for a single change, and events can also be emitted before `fs.stat` reports the changes. Cheap Watch will wait until `debounce` milliseconds have passed since the last `fs.watch` event for a file before reporting it. The default of 10ms Works On My Machine.
## Methods
### `cheapWatch.init()`
Initialize the watcher, traverse the directory to find the initial files, and set up watchers to look for changes.
This returns a `Promise` that resolves to an array of `{ path, stats }` object, one per file. `path` is a relative path from the `CheapWatch`'s `dir`, and `stats` is the `Stats` object for the file.
### `cheapWatch.close()`
Close all `FSWatcher` instances, and stop watching for file changes.
## Events
`CheapWatch` is a subclass of `EventEmitter`, and emits two events to report a new or update file or to report a deleted file.
### `+` `{ path, stats }`
A `+` event is emitted with an object containing a `path` string and a `stats` object whenever a watched file is created or updated.
### `-` `{ path }`
A `-` event is emitted with an object containing a `path` string whenever a watched file is deleted.
