init

services/analytics/sinkKillswitch.ts

@@ -0,0 +1,25 @@
+import { getDynamicConfig_CACHED_MAY_BE_STALE } from './growthbook.js'
+
+// Mangled name: per-sink analytics killswitch
+const SINK_KILLSWITCH_CONFIG_NAME = 'tengu_frond_boric'
+
+export type SinkName = 'datadog' | 'firstParty'
+
+/**
+ * GrowthBook JSON config that disables individual analytics sinks.
+ * Shape: { datadog?: boolean, firstParty?: boolean }
+ * A value of true for a key stops all dispatch to that sink.
+ * Default {} (nothing killed). Fail-open: missing/malformed config = sink stays on.
+ *
+ * NOTE: Must NOT be called from inside is1PEventLoggingEnabled() -
+ * growthbook.ts:isGrowthBookEnabled() calls that, so a lookup here would recurse.
+ * Call at per-event dispatch sites instead.
+ */
+export function isSinkKilled(sink: SinkName): boolean {
+  const config = getDynamicConfig_CACHED_MAY_BE_STALE<
+    Partial<Record<SinkName, boolean>>
+  >(SINK_KILLSWITCH_CONFIG_NAME, {})
+  // getFeatureValue_CACHED_MAY_BE_STALE guards on `!== undefined`, so a
+  // cached JSON null leaks through instead of falling back to {}.
+  return config?.[sink] === true
+}