Setup

Prerequisites

Before starting to use N-API you need to assure you have the following prerequisites:

Node.JS see: Installing Node.js
Node.js native addon build tool
- node-gyp

Installation and usage

To use N-API in a native module:

Add a dependency on this package to package.json:

  "dependencies": {
    "node-addon-api": "*",
  }

Reference this package's include directory and gyp file in binding.gyp:

  'include_dirs': ["<!(node -p \"require('node-addon-api').include_dir\")"],

Decide whether the package will enable C++ exceptions in the N-API wrapper. The base ABI-stable C APIs do not throw or handle C++ exceptions, but the N-API C++ wrapper classes may optionally integrate C++ and JavaScript exception-handling . To enable that capability, C++ exceptions must be enabled in binding.gyp:

  'cflags!': [ '-fno-exceptions' ],
  'cflags_cc!': [ '-fno-exceptions' ],
  'xcode_settings': {
    'GCC_ENABLE_CPP_EXCEPTIONS': 'YES',
    'CLANG_CXX_LIBRARY': 'libc++',
    'MACOSX_DEPLOYMENT_TARGET': '10.7',
  },
  'msvs_settings': {
    'VCCLCompilerTool': { 'ExceptionHandling': 1 },
  },

Alternatively, disable use of C++ exceptions in N-API:

  'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],

If you would like your native addon to support OSX, please also add the following settings in the binding.gyp file:

['OS=="mac"', {
    'cflags+': ['-fvisibility=hidden'],
    'xcode_settings': {
      'GCC_SYMBOLS_PRIVATE_EXTERN': 'YES', # -fvisibility=hidden
    }
}]

Include napi.h in the native module code. To ensure only ABI-stable APIs are used, DO NOT include node.h, nan.h, or v8.h.

#include "napi.h"

At build time, the N-API back-compat library code will be used only when the targeted node version does not have N-API built-in.

The preprocessor directive NODE_ADDON_API_DISABLE_DEPRECATED can be defined at compile time before including napi.h to skip the definition of deprecated APIs.

2.2 KiB Raw Blame History

Setup

Prerequisites

Installation and usage

2.2 KiB

Raw Blame History