From 50bac55c7db9e9b1811aa3fcbe2e89fe16ebf57b Mon Sep 17 00:00:00 2001
From: Dominik G <dominik.goepel@gmx.de>
Date: Sat, 2 Sep 2023 16:13:36 +0200
Subject: [PATCH] fix(find): correctly idenfity promise returned from cache
 (#117)

---
 .changeset/wise-hairs-clean.md | 5 +++++
 packages/tsconfck/src/find.js  | 4 ++--
 2 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/wise-hairs-clean.md

diff --git a/.changeset/wise-hairs-clean.md b/.changeset/wise-hairs-clean.md
new file mode 100644
index 0000000..5076fcb
--- /dev/null
+++ b/.changeset/wise-hairs-clean.md
@@ -0,0 +1,5 @@
+---
+'tsconfck': patch
+---
+
+fix(find): only call then on promise in cache"
diff --git a/packages/tsconfck/src/find.js b/packages/tsconfck/src/find.js
index f200bfd..fff603c 100644
--- a/packages/tsconfck/src/find.js
+++ b/packages/tsconfck/src/find.js
@@ -43,8 +43,8 @@ function findUp(dir, promise, done, cache, root) {
 	if (cache) {
 		if (cache.hasTSConfigPath(dir)) {
 			const cached = cache.getTSConfigPath(dir);
-			if (cached.then) {
-				cached.then(done).catch((err) => done(null, err));
+			if (cached?.then) {
+				/** @type Promise<string|null> */ cached.then(done).catch((err) => done(null, err));
 			} else {
 				done(/**@type {string|null} */ (cached));
 			}