1 files changed, 9 insertions, 0 deletions
diff --git a/node_modules/rxjs/src/internal/util/isPromise.ts b/node_modules/rxjs/src/internal/util/isPromise.ts
new file mode 100644
index 0000000..0baef64
--- /dev/null
+++ b/node_modules/rxjs/src/internal/util/isPromise.ts
@@ -0,0 +1,9 @@
+import { isFunction } from "./isFunction";
+
+/**
+ * Tests to see if the object is "thennable".
+ * @param value the object to test
+ */
+export function isPromise(value: any): value is PromiseLike<any> {
+  return isFunction(value?.then);
+}