Method DoCycle

internal/execute/watcher.go:213–256

()

}

func (w *Watcher) DoCycle() {
	w.wm.Lock()
	defer w.wm.Unlock()

	changedPaths, overflow := w.wm.DrainEvents()
	hasEvents := len(changedPaths) > 0 || overflow

	if w.recheckTsConfig() {
		return
	}

	if hasEvents && !overflow && !w.configModified {
		// Filter fswatch events against known dependencies
		if w.isRelevantChange(changedPaths) {
			w.evictChangedSourceFiles(changedPaths)
		} else {
			if w.wm.DebugLog != nil {
				fmt.Fprintf(w.wm.DebugLog, "[watch] DoCycle: %d event(s) not relevant to compilation, skipping rebuild\n", len(changedPaths))
			}
			if w.testing != nil {
				w.testing.OnProgram(w.program)
			}
			return
		}
	} else if overflow {
		// Overflow: evict the entire source file cache to force re-build
		w.sourceFileCache = &collections.SyncMap[tspath.Path, *cachedSourceFile]{}
	} else if !hasEvents && !w.configModified {
		// No events and no config change
		if w.wm.DebugLog != nil {
			fmt.Fprintf(w.wm.DebugLog, "[watch] DoCycle: no events, skipping\n")
		}
		if w.testing != nil {
			w.testing.OnProgram(w.program)
		}
		return
	}

	w.reportWatchStatus(ast.NewCompilerDiagnostic(diagnostics.File_change_detected_Starting_incremental_compilation))
	if err := w.doBuild(); err != nil {
		// Mid-cycle watch failure; force a full rebuild on the next event
		w.wm.ForceOverflow()
	}
}

func (w *Watcher) isRelevantChange(changedPaths map[string]fswatch.EventKind) bool {
	caseSensitive := w.sys.FS().UseCaseSensitiveFileNames()