Installation
OSX
brew install watchexec
Rust
cargo install watchexec
For Linux and Windows, get it from GitHub releases.
Getting started
watchexec --exts js,jsx -- npm test
Runs npm test when js,jsx files change.
watchman -w lib -w test -- npm test
Runs npm test when lib/ and test/ files change.
Other options
Flags
-c --clear | 
      Clear screen | 
-r --restart | 
      Restart process if its still running | 
Options
-s --signal SIGKILL | 
      Kill signal to use | 
-d --debounce MS | 
      Debounce by MS milliseconds | 
    
-e --exts EXTS | 
      Extensions | 
-i --ignore PATTERN | 
      Ignore these files | 
-w --watch PATH | 
      Watch these directories | 
Also see
- mattgreen/watchexec (github.com)
 
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