Function JS_IsString

third-party/quickjs/include/quickjs/quickjs.h:599–601

}

static inline JS_BOOL JS_IsString(JSValueConst v) {
    return JS_VALUE_GET_TAG(v) == JS_TAG_STRING;
}

static inline JS_BOOL JS_IsSymbol(JSValueConst v) {
    return JS_VALUE_GET_TAG(v) == JS_TAG_SYMBOL;