From 389ee6566d556d2157257c5a1a9d704d4145dab6 Mon Sep 17 00:00:00 2001
From: ymc9 <104139426+ymc9@users.noreply.github.com>
Date: Mon, 19 Jun 2023 09:00:14 +0800
Subject: [PATCH] fix: improve error messages

---
 packages/runtime/src/enhancements/model-meta.ts   | 2 +-
 packages/runtime/src/enhancements/policy/index.ts | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/runtime/src/enhancements/model-meta.ts b/packages/runtime/src/enhancements/model-meta.ts
index 40ab077b6..bb16d9e67 100644
--- a/packages/runtime/src/enhancements/model-meta.ts
+++ b/packages/runtime/src/enhancements/model-meta.ts
@@ -9,7 +9,7 @@ export function getDefaultModelMeta(): ModelMeta {
         // eslint-disable-next-line @typescript-eslint/no-var-requires
         return require('.zenstack/model-meta').default;
     } catch {
-        throw new Error('Model meta cannot be loaded');
+        throw new Error('Model meta cannot be loaded. Please make sure "zenstack generate" has been run.');
     }
 }
 
diff --git a/packages/runtime/src/enhancements/policy/index.ts b/packages/runtime/src/enhancements/policy/index.ts
index 90101f264..24578258f 100644
--- a/packages/runtime/src/enhancements/policy/index.ts
+++ b/packages/runtime/src/enhancements/policy/index.ts
@@ -69,6 +69,8 @@ function getDefaultPolicy(): PolicyDef {
         // eslint-disable-next-line @typescript-eslint/no-var-requires
         return require('.zenstack/policy').default;
     } catch {
-        throw new Error('Policy definition cannot be loaded from default location');
+        throw new Error(
+            'Policy definition cannot be loaded from default location. Please make sure "zenstack generate" has been run.'
+        );
     }
 }