Method SetString

src/util/constants.cpp:163–165

private:

	static void SetString(Napi::Env env, Napi::Reference<Napi::String>& constant, const char* str) {
		constant = Napi::Persistent(InternalizedFromLatin1(env, str));
	}

	void SetCode(Napi::Env env, int code, const char* str) {
		codes.emplace(code, Napi::Persistent(InternalizedFromLatin1(env, str)));