From 78760fd8a5b310ca4e8de502e510b95c9b4c880c Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Mon, 9 Oct 2023 22:25:54 +0800
Subject: ...

---
 src/platform/web/CMakeLists.txt |  1 +
 src/platform/web/JsUtility.cpp  | 11 +++++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 src/platform/web/JsUtility.cpp

(limited to 'src/platform/web')

diff --git a/src/platform/web/CMakeLists.txt b/src/platform/web/CMakeLists.txt
index 1287f85a..0a9bd6dd 100644
--- a/src/platform/web/CMakeLists.txt
+++ b/src/platform/web/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_library(CruPlatformBaseWeb
+	JsUtility.cpp
 	Resource.cpp
 )
 
diff --git a/src/platform/web/JsUtility.cpp b/src/platform/web/JsUtility.cpp
new file mode 100644
index 00000000..b426bbda
--- /dev/null
+++ b/src/platform/web/JsUtility.cpp
@@ -0,0 +1,11 @@
+#include "cru/platform/web/JsUtility.h"
+
+namespace cru::platform::web {
+bool IsNotNullAndInstanceOf(const emscripten::val& value, const emscripten::val& type) {
+  return !value.isNull() && !type.isNull() && value.instanceof(type);
+}
+
+bool IsNotNullAndInstanceOf(const emscripten::val& value, const char* global_type) {
+  return IsNotNullAndInstanceOf(value, emscripten::val::global(global_type));
+}
+}
-- 
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