1 files changed, 14 insertions, 0 deletions
diff --git a/node_modules/rxjs/src/internal/scheduler/performanceTimestampProvider.ts b/node_modules/rxjs/src/internal/scheduler/performanceTimestampProvider.ts
new file mode 100644
index 0000000..873e71b
--- /dev/null
+++ b/node_modules/rxjs/src/internal/scheduler/performanceTimestampProvider.ts
@@ -0,0 +1,14 @@
+import { TimestampProvider } from '../types';
+
+interface PerformanceTimestampProvider extends TimestampProvider {
+  delegate: TimestampProvider | undefined;
+}
+
+export const performanceTimestampProvider: PerformanceTimestampProvider = {
+  now() {
+    // Use the variable rather than `this` so that the function can be called
+    // without being bound to the provider.
+    return (performanceTimestampProvider.delegate || performance).now();
+  },
+  delegate: undefined,
+};