Use NAPI instead

Author: cpuchainorg

node/binding.gyp

@@ -9,11 +9,12 @@
                 "../yespower-c/yespower-opt.c",
             ],
             "include_dirs": [
-                "<!(node -e \"require('nan')\")"
+                "<!@(node -p \"require('node-addon-api').include\")"
             ],
             "cflags_cc": [
                 "-std=c++17"
             ],
+            "defines": ["NAPI_DISABLE_CPP_EXCEPTIONS"]
         }
     ]
 }

node/package.json

@@ -18,6 +18,6 @@
     },
     "dependencies": {
         "bindings": "*",
-        "nan": "^2.22.2"
+        "node-addon-api": "^8.3.1"
     }
 }

node/yarn.lock

@@ -14,7 +14,7 @@ file-uri-to-path@1.0.0:
   resolved "https://registry.yarnpkg.com/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz#553a7b8446ff6f684359c445f1e37a05dacc33dd"
   integrity sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==
 
-nan@^2.22.2:
-  version "2.22.2"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-2.22.2.tgz#6b504fd029fb8f38c0990e52ad5c26772fdacfbb"
-  integrity sha512-DANghxFkS1plDdRsX0X9pm0Z6SJNN6gBdtXfanwoZ8hooC5gosGFSBGRYHUVPz1asKA/kMRqDRdHrluZ61SpBQ==
+node-addon-api@^8.3.1:
+  version "8.3.1"
+  resolved "https://registry.yarnpkg.com/node-addon-api/-/node-addon-api-8.3.1.tgz#53bc8a4f8dbde3de787b9828059da94ba9fd4eed"
+  integrity sha512-lytcDEdxKjGJPTLEfW4mYMigRezMlyJY8W4wxJK8zE533Jlb8L8dRuObJFWg2P+AuOIxoCgKF+2Oq4d4Zd0OUA==

node/yespower.cc

@@ -1,50 +1,53 @@
-#include <nan.h>
+#include <napi.h>
 
 extern "C" {
     #include "../yespower-c/yespower.h"
 }
 
-NAN_METHOD(yespower) {
-    if (info.Length() < 1 || !node::Buffer::HasInstance(info[0])) {
-        return Nan::ThrowTypeError("First argument must be a Buffer");
+Napi::Value YespowerFunc(const Napi::CallbackInfo& info) {
+    Napi::Env env = info.Env();
+
+    // Check input buffer
+    if (info.Length() < 1 || !info[0].IsBuffer()) {
+        Napi::TypeError::New(env, "First argument must be a Buffer").ThrowAsJavaScriptException();
+        return env.Null();
     }
 
     // Input buffer
-    char* input = node::Buffer::Data(info[0]);
-    uint32_t input_len = node::Buffer::Length(info[0]);
+    char* input = reinterpret_cast<char*>(info[0].As<Napi::Buffer<char>>().Data());
+    uint32_t input_len = info[0].As<Napi::Buffer<char>>().Length();
 
     // Optional N (default: 2048)
     uint32_t N = 2048;
-
-    if (info.Length() > 1 && info[1]->IsUint32()) {
-        N = Nan::To<uint32_t>(info[1]).FromJust();
+    if (info.Length() > 1 && info[1].IsNumber()) {
+        N = info[1].As<Napi::Number>().Uint32Value();
     }
 
     // Optional r (default: 32)
     uint32_t r = 32;
-
-    if (info.Length() > 2 && info[2]->IsUint32()) {
-        r = Nan::To<uint32_t>(info[2]).FromJust();
+    if (info.Length() > 2 && info[2].IsNumber()) {
+        r = info[2].As<Napi::Number>().Uint32Value();
     }
 
     // Optional pers (default: null)
     char* pers = nullptr;
     uint32_t pers_len = 0;
-
-    if (info.Length() > 3 && info[3]->IsString()) {
-        pers = (char*)*Nan::Utf8String(info[3]);
-        pers_len = strlen(pers);
+    if (info.Length() > 3 && info[3].IsString()) {
+        std::string persStr = info[3].As<Napi::String>().Utf8Value();
+        pers = (char*)persStr.c_str();
+        pers_len = (uint32_t)persStr.length();
     }
 
     char output[32];
 
     yespower_hash(input, input_len, N, r, pers, pers_len, output);
 
-    info.GetReturnValue().Set(Nan::CopyBuffer(output, 32).ToLocalChecked());
+    return Napi::Buffer<char>::Copy(env, output, 32);
 }
 
-NAN_MODULE_INIT(init) {
-    Nan::Export(target, "yespower", yespower);
+Napi::Object Init(Napi::Env env, Napi::Object exports) {
+    exports.Set("yespower", Napi::Function::New(env, YespowerFunc));
+    return exports;
 }
 
-NODE_MODULE(yespower, init)
+NODE_API_MODULE(yespower, Init)