init claude-code

utils/settings/internalWrites.ts

@@ -0,0 +1,37 @@
+/**
+ * Tracks timestamps of in-process settings-file writes so the chokidar watcher
+ * in changeDetector.ts can ignore its own echoes.
+ *
+ * Extracted from changeDetector.ts to break the settings.ts → changeDetector.ts →
+ * hooks.ts → … → settings.ts cycle. settings.ts needs to mark "I'm about to
+ * write" before the write lands; changeDetector needs to read the mark when
+ * chokidar fires. The map is the only shared state — everything else in
+ * changeDetector (chokidar, hooks, mdm polling) is irrelevant to settings.ts.
+ *
+ * Callers pass resolved paths. The path→source resolution (getSettingsFilePathForSource)
+ * lives in settings.ts, so settings.ts does it before calling here. No imports.
+ */
+
+const timestamps = new Map<string, number>()
+
+export function markInternalWrite(path: string): void {
+  timestamps.set(path, Date.now())
+}
+
+/**
+ * True if `path` was marked within `windowMs`. Consumes the mark on match —
+ * the watcher fires once per write, so a matched mark shouldn't suppress
+ * the next (real, external) change to the same file.
+ */
+export function consumeInternalWrite(path: string, windowMs: number): boolean {
+  const ts = timestamps.get(path)
+  if (ts !== undefined && Date.now() - ts < windowMs) {
+    timestamps.delete(path)
+    return true
+  }
+  return false
+}
+
+export function clearInternalWrites(): void {
+  timestamps.clear()
+}