[英]How do I return a BigInt type from C++ to javascript using N-API?
我正在使用此https://github.com/nodejs/node-addon-api/blob/master/doc/bigint.md文檔作為從c ++返回bigint的參考,但是我收到以下錯誤:
error: ‘BigInt’ in namespace ‘Napi’ does not name a type
Napi::BigInt HelloWrapped(const Napi::CallbackInfo& info);
這是我的源代碼:
#include <napi.h>
#include "bigintexample.h"
std::int64_t bigintexample::hello() {
return 1234;
}
Napi::BigInt bigintexample::HelloWrapped(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
Napi::BigInt returnValue = Napi::BigInt::New(env, bigintexample::hello());
return returnValue;
}
Napi::Object InitAll(Napi::Env env, Napi::Object exports) {
exports.Set("hello", Napi::Function::New(env, bigintexample::HelloWrapped));
return exports;
}
NODE_API_MODULE(NODE_GYP_MODULE_NAME, InitAll)
在napi.h中,BigInt功能僅在NAPI_VERSION定義大於2147483646時可用。當我將NAPI_VERSION定義設置為高於2147483646的數字時,我收到以下錯誤消息
/home/user/bigint-napi/node_modules/node-addon-api/napi-inl.h:573:24: error: ‘napi_create_bigint_int64’ was not declared in this scope
napi_status status = napi_create_bigint_int64(env, val, &value);
通過添加define:NAPI_EXPERIMENTAL並刪除NAPI_VERSION定義來解決它
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