From a2993f7a3409f3cbc3cf604026218eedfa24dea6 Mon Sep 17 00:00:00 2001
From: Shigma <1700011071@pku.edu.cn>
Date: Thu, 1 Apr 2021 15:33:03 +0800
Subject: [PATCH] fix(core): do not send twice when return session.execute()

---
 .nycrc.json                         | 3 ++-
 packages/koishi-core/src/session.ts | 5 +++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/.nycrc.json b/.nycrc.json
index 30f824ae7c..42b3da153d 100644
--- a/.nycrc.json
+++ b/.nycrc.json
@@ -10,6 +10,7 @@
     "packages/plugin-*/**/database/**",
     "packages/plugin-*/**/database.js",
     "packages/plugin-mongo/**",
-    "packages/plugin-mysql/**"
+    "packages/plugin-mysql/**",
+    "packages/plugin-webui/**"
   ]
 }
\ No newline at end of file
diff --git a/packages/koishi-core/src/session.ts b/packages/koishi-core/src/session.ts
index 942a871643..670dc492c2 100644
--- a/packages/koishi-core/src/session.ts
+++ b/packages/koishi-core/src/session.ts
@@ -358,8 +358,9 @@ export class Session<
     }
 
     const result = await argv.command.execute(argv, next)
-    if (shouldEmit) await this.send(result)
-    return result
+    if (!shouldEmit) return result
+    await this.send(result)
+    return ''
   }
 
   middleware(middleware: Middleware) {