Function IsInt32

src/util/helpers.cpp:26–32

Replicates the semantics of v8::Value::IsInt32() (an integral number within the range of a 32-bit signed integer, excluding -0), which has no direct Node-API equivalent.

// the range of a 32-bit signed integer, excluding -0), which has no direct
// Node-API equivalent.
inline bool IsInt32(Napi::Value value) {
	if (!value.IsNumber()) return false;
	double num = value.As<Napi::Number>().DoubleValue();
	if (!(num >= INT_MIN && num <= INT_MAX)) return false;
	if (num == 0) return !std::signbit(num);
	return static_cast<double>(static_cast<int32_t>(num)) == num;
}

inline void SetFrozen(Napi::Env env, Napi::Object obj, const Napi::Reference<Napi::String>& key, Napi::Value value) {
	obj.DefineProperty(Napi::PropertyDescriptor::Value(key.Value(), value, napi_enumerable));