Add JS_IsPromise function (#807)

quickjs-ng · Jan 9, 2025 · f22dee0 · f22dee0
1 parent ffcdb41
commit f22dee0
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 0 deletions.
diff --git a/quickjs.c b/quickjs.c
@@ -48552,6 +48552,13 @@ JSValue JS_PromiseResult(JSContext *ctx, JSValue promise)
     return JS_DupValue(ctx, s->promise_result);
 }
 
+JS_BOOL JS_IsPromise(JSValue val)
+{
+    if (JS_VALUE_GET_TAG(val) != JS_TAG_OBJECT)
+        return FALSE;
+    return JS_VALUE_GET_OBJ(val)->class_id == JS_CLASS_PROMISE;
+}
+
 static int js_create_resolving_functions(JSContext *ctx, JSValue *args,
                                          JSValue promise);
 

diff --git a/quickjs.h b/quickjs.h
@@ -824,6 +824,7 @@ typedef enum JSPromiseStateEnum {
 JS_EXTERN JSValue JS_NewPromiseCapability(JSContext *ctx, JSValue *resolving_funcs);
 JS_EXTERN JSPromiseStateEnum JS_PromiseState(JSContext *ctx, JSValue promise);
 JS_EXTERN JSValue JS_PromiseResult(JSContext *ctx, JSValue promise);
+JS_EXTERN JS_BOOL JS_IsPromise(JSValue val);
 
 JS_EXTERN JSValue JS_NewSymbol(JSContext *ctx, const char *description, JS_BOOL is_global);