From 510f88d6d23d2d9da7ec4b6cfe41bcf166b9c34c Mon Sep 17 00:00:00 2001
From: LastLeaf <bqfu@163.com>
Date: Fri, 8 Sep 2023 16:14:10 +0800
Subject: [PATCH] feat: add warning when `value` and `default` are both given
 in one property (#66)

---
 glass-easel/src/behavior.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/glass-easel/src/behavior.ts b/glass-easel/src/behavior.ts
index 2274d1f..5a8a0e9 100644
--- a/glass-easel/src/behavior.ts
+++ b/glass-easel/src/behavior.ts
@@ -1467,6 +1467,10 @@ export class Behavior<
             else if (type === NormalizedPropertyType.Boolean) value = false
             else if (type === NormalizedPropertyType.Array) value = []
             else value = null
+          } else if (propDef.default !== undefined) {
+            triggerWarning(
+              `the initial value of property "${name}" is not used when its default is provided (when preparing behavior "${is}").`,
+            )
           }
           let observer: ((newValue: any, oldValue: any) => void) | null
           if (typeof propDef.observer === 'function') {