| package follow | |
| // fsWatcher is a tool for watching append-only modifications to a file. | |
| type fsWatcher interface { | |
| // Wait blocks until the file is modified. | |
| // Wait returns an io.EOF if the watcher is closed, and immediately returns | |
| // any error it encounters while blocking. | |
| Wait() error | |
| // Close closes the watcher synchronously. Any ongoing or following calls | |
| // to Wait return io.EOF. | |
| // Close is idempotent. | |
| Close() error | |
| } |