feat: improve error report

Author: gengjiawen

quickjs.c

@@ -8882,6 +8882,31 @@ static int JS_SetPropertyInternal2(JSContext *ctx, JSValue obj, JSAtom prop,
             pr = add_property(ctx, p, prop, JS_PROP_C_W_E);
             if (!pr)
                 goto fail;
+
+            // try give function name in every possible way
+            if (JS_IsFunction(ctx, val)) {
+                JSObject *vf = JS_VALUE_GET_OBJ(val);
+                if (vf->class_id == JS_CLASS_BYTECODE_FUNCTION &&
+                    vf->u.func.var_refs == NULL) {
+                    JSValue name_val = JS_GetProperty(ctx, val, JS_ATOM_name);
+
+                    if (JS_IsString(name_val)) {
+                        const char *name = JS_ToCString(ctx, name_val);
+                        if (name != NULL) {
+                            if (strcmp(name, "") == 0) {
+                                JSValue js_value = JS_AtomToValue(ctx, prop);
+                                JS_DefinePropertyValue(ctx, val, JS_ATOM_name, js_value, JS_PROP_CONFIGURABLE | JS_PROP_WRITABLE);
+                                JS_FreeValue(ctx, js_value);
+                            }
+
+                            JS_FreeCString(ctx, name);
+                        }
+
+                    }
+                    JS_FreeValue(ctx, name_val);
+               }
+            }
+
             pr->u.value = val;
             return true;
         }