Never pass NULL to the fs_poll callback, use a zeroed out statbuf instead. Makes the interface a little more convenient to use.
* the callback gets called only once on error, not repeatedly... * ...unless the error reason changes from e.g. UV_ENOENT to UV_EACCES * the callback receives pointers to uv_statbuf_t objects so it can inspect what changed
Monitors a file path for changes. Supersedes ev_stat.