microsoft/typescript-go · error

events were dropped by the FSEvents client: %w

Error message

events were dropped by the FSEvents client: %w

What it means

Error "events were dropped by the FSEvents client: %w" thrown in microsoft/typescript-go.

Source

Thrown at internal/fswatch/fsevents_darwin.go:220

	info, err := os.Stat(w.physicalDir)
	if err != nil {
		return &dirWatchError{err: err, dirWatch: w}
	}
	if !info.IsDir() {
		return &dirWatchError{err: syscall.ENOTDIR, dirWatch: w}
	}
	return nil
}

var (
	errCFStringCreateNull = errors.New("CFStringCreate returned NULL")
	errCFArrayCreateNull  = errors.New("CFArrayCreate returned NULL")
	errStreamCreateNull   = errors.New("FSEventStreamCreate returned NULL")
	errStreamStartFailed  = errors.New("error starting FSEvents stream")
)

var (
	errFSEventsUserDropped   = fmt.Errorf("events were dropped by the FSEvents client: %w", ErrOverflow)
	errFSEventsKernelDropped = fmt.Errorf("events were dropped by the kernel: %w", ErrOverflow)
	errFSEventsTooMany       = fmt.Errorf("too many events: %w", ErrOverflow)
)

const fseventsPathsPerStream = 512

type fseventsWatchSnapshot struct {
	w     *dirWatch
	state *fseventsState
}

func (b *fsEventsBackend) activeWatchesLocked() []fseventsWatchSnapshot {
	watches := make([]fseventsWatchSnapshot, 0, len(b.watches))
	for w, state := range b.watches {
		if state.terminated.Load() {
			continue
		}
		watches = append(watches, fseventsWatchSnapshot{w: w, state: state})

View on GitHub (pinned to 1bcfa18d79)

When it happens

Trigger: Thrown at internal/fswatch/fsevents_darwin.go:220 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of microsoft/typescript-go@1bcfa18d79 (2026-08-16). Data as JSON: /api/errors/1bb59fbc86c237db. Report an issue: GitHub.