From 010fd6b2fa7e3401960668e8ba0212ada8ee050c Mon Sep 17 00:00:00 2001
From: William Bonawentura <sla100@poczta.fm>
Date: Thu, 7 Oct 2021 07:50:51 +0200
Subject: [PATCH] Update transpile.ts

Guard for:
`DocGen TypeError: Cannot read properties of undefined (reading 'map')`
---
 src/transpile.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/transpile.ts b/src/transpile.ts
index fe42a55..dd8c1b5 100644
--- a/src/transpile.ts
+++ b/src/transpile.ts
@@ -19,7 +19,7 @@ export function getTsProgram(opts: DocsParseOptions) {
       );
     }
     const tsconfigDir = path.dirname(opts.tsconfigPath);
-    rootNames = configResult.config.files.map((f: string) => {
+    rootNames = (configResult.config.files ?? []).map((f: string) => {
       return path.join(tsconfigDir, f);
     });
     options = configResult.config.compilerOptions;