From 1bed7530cb5e4d336e4a4a149911aad7e3fdd3a1 Mon Sep 17 00:00:00 2001
From: Vinicius Stock <vinicius.stock@shopify.com>
Date: Fri, 3 Nov 2023 14:38:34 -0400
Subject: [PATCH] Alert shadowenv users about missing Ruby

---
 src/ruby.ts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/ruby.ts b/src/ruby.ts
index 6be15c4d..be3ff2ee 100644
--- a/src/ruby.ts
+++ b/src/ruby.ts
@@ -150,6 +150,16 @@ export class Ruby {
     // eslint-disable-next-line no-process-env
     const env = { ...process.env, ...JSON.parse(result.stderr).exported };
 
+    // If the configurations under `.shadowenv.d/` point to a Ruby version that is not installed, shadowenv will still
+    // return the complete environment without throwing any errors. Here, we check to see if the RUBY_ROOT returned by
+    // shadowenv exists. If it doens't, then it's likely that the Ruby version configured is not installed
+    if (!fs.existsSync(env.RUBY_ROOT)) {
+      throw new Error(
+        `The Ruby version configured in .shadowenv.d is ${env.RUBY_VERSION}, \
+        but the Ruby installation at ${env.RUBY_ROOT} does not exist`,
+      );
+    }
+
     // The only reason we set the process environment here is to allow other extensions that don't perform activation
     // work properly
     // eslint-disable-next-line no-process-env